I mean they really present themselves as intelligent entities. They were talking to us in a certain way, communicating telepathically. They had a lot to teach us. If you make this sound, you can affect effectively molecular changes in your physiology at the at the level of DNA induce a resonance with your DNA that will cause it to turn superconducting. You will actually be able to exteriorize your consciousness. Psychotic break, shamanic initiation or alien encounter. Right. And it it had all of those elements, you know. It had all of those elements. Dennis McKenna has one of the most remarkable stories I have ever heard. Imagine yourself at 20 years old in the Colombian Amazon basin, living for months almost entirely on a diet of psychedelic mushrooms in a 24/7 sleepdeprived cosmic dance with the universe. Together with his brother Terrence, they ran an experiment on their own minds that should have destroyed them both. One walked away a mystic and became the most famous and impactful psychedelic philosopher of all time. The other walked away a scientist and spent the next 50 years becoming the ethnopharmacologist who first proved how Iaska works. Welcome to the story of the McKenna brothers. We went to South America because we thought if we could find a orally active form of DMT. DMT was the the mystery for us. It was the holy grail. What happened was that we became dissociated from reality for a prolonged period. I've expanded my mind to be contiguous with the boundaries of spaceime and I was the universe over about 2 weeks each 24 hours. I I was one with the cosmos and I began to collapse in on myself. I began to reconstitute. Then I was contiguous with the boundaries of the galactic supercluster and then the galaxy and then the solar system and then while all this was going on Terrence was in a hyper vigilant state looking after me and he he didn't sleep for 14 days. You're middle of the [ __ ] Amazon, right? So you can't just go to the clinic down the street. And of course >> for a 20-year-old >> it was a lot. It's a lot for 60 year old. It's a lot for 70 year olds. It's a lot for anyone >> 20 years older than the Amazon having these experiences. I mean, I can only imagine. >> Well, yeah. Can you detail maybe some resonant moments or resonant experiences in your life that led you on the particular scientific journey that you ended up embarking on? >> Well, no doubt it was psychedelics. I mean, psychedelics has been, you know, a major preoccupation of mine uh for, you know, 60 years almost. you know, uh I was heavily influenced uh by my brother. No surprises there. Uh I mean, he was four years older than me and in this dynamic that older and younger brothers have, you know, the younger brother wants to be in your older brother's parade basically. And I was very much like that. if your older brother was interesting and Terrence was certainly interesting. He always had lots of things going on and he was a mentor. You know, I I've in my book I've called him a tormentor and a mentor, you know. I mean, he was a tormentor. He was mean to me as a younger brother. That's what older brothers do. Younger brothers suffer from it. But but when that wasn't happening, especially as we got older, uh you know, we he got more respect for me. I mean, I was no longer just the nerdy little pesky brother. He realized that I had stuff going on, too. And that actually I had some things that were interesting uh that he was also interested in and interest that I, you know, I had interest that he didn't have and vice versa. But so we gradually grew I think from being uh I mean we've always been older and younger brother but we've always we we grew into being really colleagues in some ways fellow explorers of this phenomenon of psychedelics you know and uh and that was in our world back in the 60s and really it has continued to this day. It was simply not simply the most interesting drugs we found, but the most interesting phenomenon, the most interesting experience that we had with psychedelics. So, it's it's been an endless fascination for for many decades. And uh uh and it continues, you know, I mean, I'm not I'm not as obsessed with psychedelics as I as I used to be. I'm basically I'm I'm most of my contributions of science have been in the past but uh I'm still interested in it still very much think that it's worth understanding and uh how these things and my brother and I we went we kind of diverged at a certain point he was more of a philosopher and he was uh ready to reject science you know and and he said science will never explain the phenomenon that we're that we're interested in exploring and and you know the the psychedelic experience and the things that happen to you. He claimed that science is never going to be up to the task and so in some ways he rejected science and he became like a philosopher and that was convenient because he was a very good one. It also freed him of having to actually study science, you know, and that's and that's that's that's the price you pay if you want to practice science. If you want to do science, you have to study it. And he didn't have the patience for that. I on the other hand was saying, well, science is a powerful tool for understanding nature and we need to do science before we can reject science. So I went that route and I I became, you know, less preoccupied with metaphysics and more preoccupied or interested in what you might call nuts and bolts, you know. So I was interested in the chemistry. I was interested in the pharmarmacology. How do these things work? What's going on in the brain? What are what about the plants and the fungi that makes them? That's where most of my experience, my you know investigations have been based on looking into the chemistry and pharmacology of these plant medicines, these psychedelic plant medicines. Uh so I was very much in that mode and very handson and and practicing science as best I could and Terrence was you know through his attitude he was able to free himself of that and he was free to speculate and if you're familiar with his work you know which I assume you are to some degree you know yeah a lot of speculation and uh a lot of it is uh nonsense to put too not to put too fine a point on it. You know, he was a lot of his theories is his ideas, they don't stand up in the light of science. They're not really scientific theories. They're more like interesting suppositions. And and that's how hypotheses, that's how they all start out, a supposition about something. But he uh he was interested in proving his suppositions. And uh that's not how science works. You know, science, if you really practice science honestly, uh you come up with a supposition, you come up with a hypothesis, and then you try to demolish it. You know, you try to find out where are the gaps, what does it not answer, what where what is it? And it's always positioned in a the context of based on the data that we have, based on what we know now, does this hypothesis uh answer the question? Does it cover what we know now? So you never prove a a theory or a hypothesis. It's always provisional. You have to re recognize that you may have to some, you know, something may come up may come along that completely uh dis dismantles the hypothesis. But so all of these models are working models, you know, and but they're good enough. They help expand the the investigation of knowledge, the expansion of knowledge. And what's the why you come upon uh a major discovery and then you look at it you have you can say well um this is going to change everything right like the transition from say Newtonian physics to to relativity. I mean relativity was you know relativity was the end of Newtonian physics as a tool for understanding the nature of the universe but that said Newtonian physics remains quite useful but everybody understands that the universe is relativistic I mean there you know the Einsteinian universe is not the same but in everyday world day-to-day world, Newtonian physics works just fine, you know, and relativity is there, but you it doesn't really affect most of what happens to us, you know, unless we're in special circumstances, you know, such as traveling a big percentage of the speed of light or something like that, then things get weird for sure. I want to tell you really quick about the one item that I have incorporated into my life over the past 2 years and it is a genuine gamecher and that is the Manta sleep mask. People radically underestimate how much impact even a small amount of light in your sleeping environment has on your sleep. Studies consistently show this. 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I wear it every single night. You can see it in the back of podcasts. They've been a long-term sponsor of the channel. I really couldn't recommend them more. I think you should check out Manta using the code Giants Manta 10 in the description for 10% off your sleep mask. Again, that is Giants Manta 10 for 10% off your sleep mask. I genuinely guarantee that you will not regret it. Back to the episode. I'd love to hear about what brought you and your brother to the Colombian Amazon in the 1970s. I read about this experience and and I think it it sort of sets up a lot of the diverging introjectories between you. Can you talk about what brought you there and then the experience that you shared? >> Well, yes, I can. I can within limits but I also don't want to go down that rabbit hole because it's such a deep rabbit hole you know and I've I've talked about it many many times and uh I don't want to keep repeating myself but I can tell you that you know even so that was 1971 right nearly over 50 years ago that we were there uh we were very young. We were I was 20, he was 24. Uh, and we were at that stage of life, you know, that young people go through and especially curious nerds like we were where you think you know a lot, you know, and chances are you don't know very much, you know, and I think that's one of the lessons that science teaches us is the limitations of of our understanding. But we went there and we had certain ideas and we went there in search of them. And what led us to go there? Again, this this all centers around psychedelics. And in our world in the late60s, the most interesting psychedelic that crossed our radar was uh DMT. And DMT was extremely fascinating you know because well you probably experienced DMT so you know why it fascinated it simply it was not simply the most experienced it >> I actually have so many convers I h I haven't experienced it I it's on my list I'm I'm currently in a country that all drugs are extremely illegal so it's difficult for me but the um eventually it's on the list but I've had so many conversations I know how interesting it is from that perspective. >> Yeah. What country do you live in? >> Well, I'm currently in Malaysia, so I will be hung in the town square for something like that. >> Oh, I guess you would be. Yeah. Yeah. Well, that's You'll have to go to another country for that. That's too bad, you know, because DMT is and all psychedelic experiences. There there there's something that you cannot delegate. You can't ask somebody else to have your experience for you. You just have to do it yourself. You know, I mean, you can read about it. You can observe people taking it. You can do all these things, but it's kind of like sex, you know? If you really want to experience sex, you just have to step up and do it. You know, you could watch porn, you could watch other people. That's not sex. That's observing sex and drugs are like that. You have to engage with them and uh and when you engage with >> just haven't had the chance of DMT just yet. >> Well, you I mean you have to actually take it, you know, and you won't ever adequately understand what's it what it's about until you take it. But I'm here to tell you once you take it, you won't understand what it's about either. But but you'll have a much better idea, you know, and you'll realize that when you take it, it's absolutely one of the strangest experiences that one can have. And it's fascinating. And it's not necessarily terrifying. It can be terrifying, but usually it's just fascinating. And it's not uh, you know, in the right doses and in the right circumstances is it's not a threatening thing. I mean you're you don't have time to be threatened for one thing. It's so short in its mechanism of action. I mean it's only 15 20 minutes you know in the smoked form right and so by the time you begin to wonder things like well am I ever coming back from this? You know have I completely blown out and I'll be here forever. By the time you can even think that question, you're already on the way down, you know, and it takes it it and you come back down and you're ordinary consciousness reconstitutes and and it's like rebooting your computer, you know, you bring your computer back up and you wake up to ordinary consciousness. But DMT was the the mystery for us. It was the holy grail. We wanted to understand DMT because in the uh in our model back in the 60s uh we we were both we were both science fiction nuts. You know, we were science fiction fans and and science fiction is a dangerous thing to muck with because it it messes with your head if you know anything about it. And so with this background, we thought this place that you get to on DMT and it's very much like a place. We thought this is another dimension, right? We didn't think of it as a drug trip. We thought of it as a portal to another dimension. The two do not have to be different, but that's we we thought that's what it is. This is actually a different dimension. And since then plenty of people have corroborated that feeling that doesn't prove that it is another dimension but a lot of people have you know that impression and uh and so based on that we were frustrated by the fact that DMT didn't last very long. Uh, and that was that was a problem because by the time you actually get to the deepest part of the experience, it's already dissolving. It's already collapsing. And so we went to South America because we thought if we could find a orally active form of DMT. DMT, as you probably know, DMT by itself is not orally active. You have to take an MAO inhibitor with it in order to make it orally active. That's the basis of iawasa. Iawaska is effectively DMT in one plant combined with another plant that contains these alkyoids, betaarbines that are monoaminoxidase inhibitors. So you have to inhibit MAO in order to make it orally active. We so we thought we'd like to go to South America and find an orally active form of DMT. And uh at the time uh we didn't this this was like 19676869 in that area the uh the pharmacology of Iawaska was not well understood. It really wasn't understood that that is an orally active form of DMT. you know because it was later that the importance of the ad mixture plants to iawaska and all that was discovered. We didn't have that data when we had this idea to to go to South America look for the orally active form. So we another source another paper actually that Schultties Ari Schulties the famous Etobotnus published uh on a different species of plant member of the of the nutmeg family. Verola is the genus and Verola. The sap of Verola subspecies contains DMT and fibthoxy DMT in rather high amounts and other tryptoines, but those are the two main ones. And uh in lots of parts of the Amazon, the ferola is made into a snuff. the sap is extracted and boiled down and mixed with ashes and and they use it as a snuff because it's not orally active otherwise but there were a couple of tribes that did have an orally active form and uh Schulties published this paper uh about this in the botanical Harvard botanical museum leaflets and the title was Verola as an orally active Synergy and it was like the title may have well have been in neon lights because you know we we stumbled across this paper and we we said this is it. This has got to be it. You know this is the secret. So we got to get this this material which which was called Ukuhi and it was used by primarily by the Woto people and a couple of related tribes and uh they lived north of the Pabio. Their their ancestral home was uh Lurera this this this village north of the Pabayo. That's why we went to Lerera was looking for Uku completely naive not knowing what really not knowing what we're doing which is a good place to be into in some ways because when you're in that state you're open to the unexpected you know and you have to you you welcome the unexpected well we went there we went to Lera looking for ukuh and this story has been told in my book and it's been told online and it's been told lots of places. You probably read or looked at some of those. And uh when we got to Lera looking for this what we had come to think of as the secret. Uh, talk about being surprised by the unexpected. When we got to this place, which was a little tiny mission village in uh, you know, along this river, the Gar Parad pretty much at the end of the navigable portion. And at this mission, they'd cleared the pastures. They cleared the jungle around the bishop, put in probably a couple hundred acres of pasture land and they had put seabu cattle there and uh seabu cattle. The dong of seabu cattle is the preferred substrate for silos kubensus which is the pan tropical psilocybin mushroom. And uh that mushroom was everywhere. We just hit the season, right? And out of every cowpie, you know, there were big clusters of large specimens of psilocybasis. So, we thought >> every 20-year-old, you must have showed up and >> Yeah, it was it was absolutely a dream. >> Yeah. And we had no experience with these mushrooms that you couldn't really get them of those days, you know, unless you went to Mexico. And uh we had no experience, but we knew what they were. But we thought, well, these these will be fun to play with while we wait for the real mystery to show up, you know, where we work on it. And then we started >> Yeah, we started taking them. And we started taking them regularly. And we started taking high doses regularly because they were so interesting and so non-threatening. And there was no sense of toxicity or anything. You could really push the dose and you could be in this completely gone psychedelic state for days at a time. And uh and we did. We threw caution to the wind and we started eating these mushrooms a lot and our question >> nutrition and calories was from was from >> actually yes to a certain extent because there wasn't a whole lot else to eat. So you'd be surprised it it makes a good suit you know with a little rice some potatoes and it's not bad you know and we did we did that. So we were constantly in this state and uh >> you know the uh the the quest for Ukuhi sort of got put on hold because partly because we'd been warned when we had gone into Lera. We stopped at a village on the way in. There was an anthropologist there uh who worked with the with the wattoto and when we told him what we were there for he was completely appalled you know I mean for one thing we looked like we'd stepped right out of eight ashberry we were we were at least as colorful as any of the people any of the woto I mean we had bells and beads and beards and you know we were a colorful bunch right And uh so Dr. Cay was completely was completely appalled. And then when we said we're here to find a coupe, he completely freaked out. Uh but he he said well you know this is their this is the primary medicine of their shaman shamanic practices. And if you go in there and start spouting about ukuh they're going to kill you basically because this is the big secret. And we were sort of cavalier about it. We said, "Yeah, yeah, whatever, Doc. You know, we'll be we'll be careful. You know, we'll be discreet. We won't just ask everybody we meet to find a coupe." And and so we were we were we were we were hoping that at Lerero we'd find an an informant, somebody that knew about this that could make ukulele for us. But we thought, well, in the meantime, we can work with these mushrooms and and more like play with these mushrooms. And we got into uh pretty much taking them all the time. And uh they promote intense ideiation and uh what you might call funny ideas. funny ideas just bubble up, you know, from the from the unconscious, I guess. And they and that was what happened with us. And the mushrooms, if you have have you had experience with mushrooms? >> A a good few. They grow they actually grow um I'm from Ireland. They grow in Westme. You can get Liberty caps in a county just outside. So, we go mushroom picking uh every year. And yeah, many experiences on mushrooms many times. Yeah, >> many experiences. Okay, so you you could get those. Well, if you've taken mushrooms a lot, you you probably know that in deep communion with them in in high doses, you can get into a state of kind of an I thou relationship. I mean, they really present themselves or they do did to be. Terren as uh intelligent entities, you know, they were they were talking to us in a certain way, communicating telepathically. And they had a lot to teach us. And uh what they wanted to teach us was uh what we could do with sound and what we could uh you know, because on high doses of these mushrooms, we could hear a a sound. It was like a not on low doses, but on very high doses, we could hear an interior sound that was like a buzzing electrical kind of popping buzzing sound. And if you if you you could imitate this sound and uh you could try to sing it actually and it would and if you if you kept at it, it would you could lock onto it and then you it would just pour out of you, you know, a very powerful sound and the what you might call an olation. you know, a a powerful um well, like a Hawaiian chant. If you've heard a Hawaiian chant, these are not, you know, it's it's like that. It's a very powerful vocalization. And the mushroom was telling us that if you if you make this sound, you can affect effectively molecular changes uh in your physiology at the at the level of DNA that you can actually resonate induce a resonance with your DNA that will cause it to turn superconducting and uh various interesting things would happen after that. So it was all about you know a a uh exercise in self transformation that you know what what it was saying was if you do this you will actually be able to exteriorize your consciousness and and concress it in a mushroom in the external world. If you direct that at a mushroom, you can concess this energy and effectively project your mind into it and you become this visible uh artifact that is your mind. You know that you can both see it and be it right at the same time. and it responds to your thought and uh and that's what you can do. And now you know 50 years later and from this perspective of not being stoned on mushrooms right now and and lots of experience, this was clearly a delusion, you know. I mean, but we were we were convinced that this was it and that if we did this, uh, it would be it would be a lot of things, but it would be the first time that the the human psyche had actually exteriorized itself in a visible way. And the consequences arising from that would be effectively uh the end of history and everything else. And so uh and of course >> for a 20-year-old >> it was a lot. It's a lot for a 60 year old a lot for a 71y old. >> Exactly. >> It's a lot for anyone >> 20 years older than the Amazon having these experiences. I mean I can only imagine. Well, yeah. And but we were we were up for it, you know. We were gung-ho and we thought that uh you know, we're doing this thing and we're having all these ex you know, we were doing these experiments and all sorts of crazy things were going on that were that didn't seem entirely to be delusions or hallucinations. You know, there were things going on in the external world that were very hard to account for like I think Terrence has talked about his encounter with a UFO during this period and all of that stuff and uh you know so he had this idea if we do this we can create this artifact which would be the ultimate artifact a union a fusion of mind and matter that responded to the imagination. And it could do effectively anything you could imagine, which is a, you know, a pretty strong statement to make for for, you know, an appliance. >> And, uh, >> and, you know, so so at this point, we're far beyond science, you know, I mean, we're not, we had the, uh, you know, maybe the delusion that we were doing science. we weren't doing science. Uh, one of the folks that have written about this and written about the McKenna brothers uh, adventures had said actually they were doing science fiction. That's what they were doing. And I think that's right. We went there to commit an act of science fiction. We just thought it was science. But science, you know, this was this was no kind of science because uh you know, are you a scientist? >> No. Well, I think of myself as a science communicator. I studied science in college and have done science, but I I don't consider myself a scientist. >> Yeah. But you understand how science works, right? You understand from that point of view. And science has to have controls and it has to have testability and it has to have a structure right and this is this has been you know this can be a criticism of science but this is also a strength of science but we didn't have any of that we were at this point into a ritual place where we were carrying out these exercises and trying to get this effect and uh what we predicted >> what time frame just like how long are you doing this for? How long is this extending? >> Well, that we we were in the Amazon about uh we went we went in early uh late January 1971. We were back uh out of there by the end of May. We were not at Lera much longer than about 3 weeks, you know, but it took weeks to get there and weeks to get out. So, well, it didn't take weeks to get out because actually we got out very quickly because uh after all this fooling around, what happened was that I became what some people would say would what looked like psychotic on the outside. Uh I was not I didn't think it was I was psychotic. I was living out the the myth. I I was living out what we predicted would happen. Uh but from the outside it must have looked like I was pretty pretty far gone and I was by any measure but uh I reconstituted I a big after that we did this big experiment making the sound. Well we made the sound and we had predicted certain things would happen. Well, those things did not happen because they couldn't have happened. You know, it would have completely upset it would have upended the entire framework of physics and uh you know, we we had no problem with that, you know, but physics physics had a problem with >> very ambitious goals. >> Yeah. So, so that's you know the the predicted result didn't happen but we we effectively worked ourselves into a corner where something had to happen and what happened was that we became uh dissociated from reality for a prolonged period at least I did and Terrence had the opposite effect he became hypervigilant And partly because he had to look after me. I was not capable of looking after myself and I was wanting to wander off from the hut where all this was going on. He wanted to keep me in the habit, keep an eye on me. So he became hyper vigilant. So while I was working through I had the my own subjective experience was that uh uh I had uh effectively become I've expanded my mind to be contiguous with the boundaries of spaceime and I was the universe. You know you you hear about that you know that's a trope with psychedelic experiences right? We're we're all one. We're one with the cosmos. Well, I was one with the cosmos, you know, and uh that was my sense. And over about two weeks, each 24 hours, I I was one with the cosmos and I began to collapse in on myself. I began to reconstitute over every 24-hour cycle. The first cycle I was uh you know uh I was co-ontiguous with the boundaries of spaceime the next time and then I was continuous with the boundaries of the galactic supercluster and then the galaxy and then the solar system and then you know the planets and gradually returning to my body you know and uh and while all this was going on Terrence was in a hyper vigilant state looking after for me and he he didn't sleep for 14 days and uh I don't know if I slept I was not uh sleeping was the last thing I was doing or interested in doing but he uh he stayed awake so that he could look after me and while he was doing that he was wandering around you know at night our companions were sleeping our companions by the They at this time were completely appalled at what was going on and they thought you know we were both nuts and you know which was true in a certain sense. They were really >> They might have They might >> Well, yeah. They had a serious point and they they were pushing they were pushing to get us flown out of there, you know, back to a psychiatric facility and all that. And uh which wasn't really an option because, you know, you're middle of the [ __ ] Amazon, right? So, you can't just go to the clinic down the street. And um and Terrace was uh he was uh he was protective of me. And he said I mean his thing was we were still working within the framework of this delusion or this theory or whatever it was. He he he was saying look everything is fine. It's all it's all going the way it's supposed to. it it's just the timing is different than we thought. But it's all going and we need to let this process unfold. We need to let it happen. We should not interrupt it with, you know, being taken in a straight jacket to a psychiatric clinic. That would not be good. And so he he he held the line and he just said, "Let Dennis live out this trip." And um to this day I'm grateful that he did that because I I I it uh I think if the if the trip had been interrupted with some kind of psych psychiatric intervention, I probably never would have recovered. But because we had the opportunity to just let this thing play out, I put myself back together. I condensed from being one with the universe to being a human body and then, you know, a consciousness in a brain and all that. And I condensed back into being Dennis McKenna, you know, but I was a different Dennis McKenna than when we started out. And uh and uh and I'm glad that Terrence, you know, insisted that we let that happen because I feel like ultimately I feel like it was it was a therapeutic experience. You know, I feel like I mean I've I've given a couple talks about this or I have a talk I've given and and various places and the and the uh the title of it is the experiment at Lera uh psychotic break shamanic initiation or alien encounter question mark right and it it had all of those elements you know it had all of those elements. It was definitely to the outside observer it looked like a completely psychotic break and this guy was completely three sheets to the wind. My own experience was that it was a kind of shamanic initiation, you know, because it the themes of what we were doing were all about self-transformation. And that's what shamanism is really about. Learning to become a shaman is to is to become uh you know to acquire powers and abilities that most people don't have. That's how they can do do their healing. A lot of which is done with with obviously using plants and that kind of stuff but also energy. And so there was an aspect of that and then there was the alien encounter aspect too which was we were convinced that all this was being orchestrated by that this this we talked about the mushroom. We called it the teacher and the mushroom was channeling these instructions to us and uh uh and you know we were it was like the mushroom wants to impart misinformation. We were convinced that either it was the mushroom directly that was intelligent in some ways that was that was transmitting this information or the mushroom was a conduit for extraterrestrial beings. And we had this notion of, you know, there being a spaceship in geocynchronous orbit over the Amazon and they were beaming down all this information through the mushrooms and we were absorbing it and you know this this is crazy [ __ ] right? I mean, but but that that was what was going on. And uh uh but eventually I reconstituted and became you know more or less past that and more not exactly in a uh uh normal state of consciousness but at least in a functional state of consciousness. And the same with Terrence you know Terrence really never left that in a certain way. He remained hypervigilant and for a while eventually our companions decided that they'd had enough and that uh you know we really had to get out of there and uh and they insisted that we arranged to have a plane come and pick us up. So we did. We used the radio telephone to call this bush pilot that was notorious in the area and he came and flew us out to Laticia and Bogota and eventually we you know we recovered in some ways or we got back to normal. Um, but you don't go through a an experience like that and you never become really I mean it lives with you for the rest of your life, you know. And I've often said, you know, we were only 20. I'm 24 at the time, but the, you know, the shadow of Lera has been overshadowing over us for most of our lives. But you know, you can't live your life in uh you know uh I mean you have to move on beyond a psychotic break or a alien encounter whatever it was that you had an early life you have to go on with your life. But as a result of going through this process this the issue of what do we do? How do we process this? And Terrence was saying science can't approach this. Science can't touch this. It will never explain what happened to us, you know, and we need to reject science because this is just beyond science. And I was saying well wait a minute not so fast you know uh we we are not scientists first of all because we you know we may have fancied that we are scientists but we weren't really scientists we were like like Eric Davis said we were committing an act of science fiction not an act of science you know so my position was uh we can't reject science until we know how to do science and so I decided you know Terrence in a way that's a significant juncture at which we sort of diverged because Terrence went on to become a philosopher and a metaphysician and uh you know and a theoretician of the time wave which was the you know this mathematical uh construct that supposedly described the structure structure of time and that came from his revelations at Lera and then over many years of course it was it was refined and and changed but but the curdle of the idea came at Lera and he he worked on it for many decades. My reaction was the first place I was like, "Okay, I'm I'm done with uh all this cosmic travel, you know, I just want to get my feet back on the ground. I want to be a normal person and you know, a sane person and u I also wanted to be a scientist. I mean that's paradoxically I thought instead of rejecting science I went back to science and I I wasn't really taking science in school at the time. I was taking a couple a couple courses, but mostly I was taking anthropology and things like that. And I went back and I started studying harder science like chemistry and pharmarmacology and uh uh ethnobbotany and and botany and and that sort of thing. And I became interested in those things. I wanted to be in a way it was a way to reassure myself that I wasn't completely nuts and that I could do ordinary scientific stuff, you know, and I could do things, but I didn't lose my interest in in psychedelics. So I ended up making a career studying psychedelics, you know, I studied uh mushrooms and and uh I did my PhD thesis 10 years later. So this ukuh that we were looking for, I should come back to that. this uh this orally active verola preparation. Uh we never really found it at that time. Uh we never really encountered it. We didn't find anybody who was knowledgeable about it. And but 10 years later as a graduate student at the University of British Columbia, I went back to South America. I went to Peru this time and uh my my thesis work my doctoral work was to do a comparison between Uku which was still a mystery. I had never collected it or experienced it and I in the interim in that interim 10 years pretty much IA had been studied but not that not that much from a chemical perspective. It was understood that it was a combination of a DMT containing plant and a vine containing monoamine oxidase inhibitors and then Uku was even studied less. So basically that's what my thesis became. It became a comparative study of Ukuhei and Iwasa. In other words, same compounds, similar compounds, similar pharmacology, both orally active DMT preparations, but completely different botanical sources and used in a different way. And so uh as it turned out when I went to Peru uh I went the the uh I mean the woto had would their ancestral home was latcher era but in the early part of the 20th century the rubber boom had forced a lot of these people a lot of those communities up there out they'd been relocated forcibly relocated to south of the Puchayo to an area called the Rio Aiyaku. So there was a Woto community, the the diaspora of the W of the of the from Lera was at the Rio Aiyaku, which was a few days down river from uh Akitos, which was uh this Amazon, this Peruvian town on the Amazon without any roads going into it. So I went to we I went to Aikidos and we went down river and up the upaku and then I did find kuhi and uh the thing is the the informants were people who basically this was a dying tradition. This was disappeared knowledge and many then many of the people we talked to said well I sort of remember this. I remember my grandfather, you know, did things with it or my father I kind of remember. I don't really know how to do it, but I'll try it. I'll try to try to replicate it. And we found about seven people that were willing to give it a shot to try to replicate this ukulele. So, we collected those. And then I was then the other thing I was doing was was uh uh collecting iawasa. I wanted to you know I was collecting samples to take back to the lab and analyze. So I was very much uh in the role of scientist at that point and not shamanic explorer. I mean I took Iawaska well in in the process of of doing this work when the UK samples came up uh uh then you know I I felt like I I have to prove I have to I have to demonstrate that they're active or not are they active is there anything here so I did test most of the samples and uh most of the samples were completely inactive as far as I could tell a couple of them were rather active. So then when I got back the samples back to the lab finally I could look at the alkyoid profiles and it was pretty much a perfect match. you know, the ones that had the alkyoids were active and the ones that because Verola this the genuses are very chemically uh variant kind of species even the tryptoamine profiles even in the same species can be quite different you know from individual to individual region to region. Uh Iaska is a more consistent thing and I was collecting Iawaska in the ad mixture plants and eventually got all of this stuff back to the lab and was able to do the analysis and do my thesis, you know. So it was it was uh that was my that was my thesis was this comparative study and uh not nearly as exciting as lure era but you know fairly solid work >> important work >> and uh with that >> important work I mean am I right in saying that that that thesis was the first pharmacological proof of why IA worked exact Exactly. Why? I know there was maybe some ideas but it was the actual evidence. >> Yes. Yeah. It was in that sense it was because I did um particularly with Iawasa and and the UK. Yes. I I had a bioassay. I had an MAO inhibition assay that I could do in vitro. And so I tested all these extracts and showed that you know the the right fractions were definitely powerful MAO inhibitors. Not really a surprise to anyone. I mean we other people had shown that these beta carbolines were MAO inhibitors and I wasn't too surprised that the extracts of Iawasa were were quite active as MAO inhibitors. You know what was a little surprising was actually that the UK and I had several samples uh were not great as MAO inhibitors as it turned out. They did do they did there were no um betaarbalines or only traces of betaarbalines in the UK samples and uh so but there were high levels of tryptoines and they did show activity in the MAO inhibition assays. Uh but I could never really explain why they were orally active except that I think that well the thing is the tryptomines themselves or sub substrates for MAO right so if you if you saturate MAO it's possible some of it becomes orally active you know you overwhelm the system effectively that's particularly true uh the the Uh the sample that I that I that was most impressive uh of the uku seemed to be subjectively based on my limited experience but but subjectively it seemed to be very much like fibthoxy DMT rather than DMT. It was fibbethoxy DMT. That was the phenomenology of it. And I I said to Teros of the tribe, this is a lot like DMT. And uh when I got the sample back to the lab that was confirmed the only alkyoid in that sample in in any quantity was fibthoxy DMT. So that was a neat confirmation of field experience with uh with you know the chemistry and the pharmarmacology. So, so, uh, >> uh, I I just assume, uh, but it wasn't this, it was a less defined kind of interaction than beta carbolines inhibiting, uh, MAO. It was it was the tryptomines themselves to a degree were inhibiting the MAO. That's the only thing I can figure. Iaska is obviously different than DMT. DMT is very intense and it only lasts 20 minutes, 30 minutes at the most and it's, you know, it's overwhelming. Iaska can be overwhelming in another way, but I mean, the DMT element is there, but it's not as intense as when you smoke DMT, but it's stretched out over four, five, six or seven hours. So, That was the objective really when we went to Lerera was we wanted to spend more time in that dimension you know and we thought of it as a dimension or another place and and it was frustrating because we couldn't it was like I said by the time you began to get your sea legs get familiar with it it's already fading so we wanted an extended uh DMT experience and that's what I prov provided the ukuhes proved to be disappointing. I didn't have enough material to really work extensively with them. Uh uh so I can't say there may be that the the few samples I took was were not impressive, you know, and maybe they weren't made properly. They were made by people who were trying to to replicate what their grandfathers knew. But you know, you know, with these indigenous cultures, plant knowledge is readily lost. So, who knows? But IA was a different thing. I was able to collect lots of different samples of Iawaska, the plants that go with it and all that. Bring all that back and uh and take and take a lot of continued. Iawaska has been one of my major plant allies. Between that and mushrooms, you know, that's pretty much uh those are my plant allies. I I take other things but more out of curiosity or to put a put a data point on the map. But mushrooms and Iawaskkar are my teachers, you know, and the indigenous people uh all over the world have this idea that these are plant teachers and and they do. They teach you. And so uh my interest in iawasa and mushrooms has been personal as well as as scientific you know and people talk about you know the experiment of lera and all these things that we did and you know I mean it makes for a good story but what really is the significance of it other than saying well you know a a couple of young kids came went to the Amazon took took too many drugs and got with nuts, you know. I mean I mean you can look at it you can look at it that way but but the one thing that makes a difference not so much the experiment that we did the one thing that really has made a difference is other than that it's sparked a lot of conversation you know and it made made a career it made a career for my brother talking about this stuff I preferred to stay in the background and just do my research. But he was, you know, on the circuit and talking about the time wave that was, you know, but uh the one thing that we did do that had an impact that that made a difference in society is we had the presence of mind to collect spore prints from the mushrooms growing in the cowpies. We brought the spore prints back with us and we after a couple years mcking around, we finally figured out how to grow these things so that we could have access to these experiences again and so that other people could too. And we were looking for confirmation. I mean, we were wondering is did does everybody have these completely crazy experiences? And so we had to get it out to people. So we published this book, you know, psilocide of magic mushroom growers guide and a lot of people bought that book and they grew mushrooms. It was a simple method >> and guess what? They confirmed that all these crazy things happened. And so so really if you want to if you want to say what is the legacy, what was the impact of the McKenna boys? That was the impact. It's not that we were the first to grow psilocybin mushrooms. That had been done, you know, years before, but there was nobody had published a book with a simple method how to do it. There were people occasionally there were people scattered around doing it. But our book really had an impact and many many people bought that book and pretty much mushrooms became a thing in our society as a result of that. And uh we can claim some >> some amount of credit for that. Yeah. Some amount of credit for that. And uh I don't regret it. I'm I'm happy. I'm happy that it happened because well because you you know you've followed the field and you've seen what happens what has happened with psilocybin and you know psilocybin is almost the perfect psychedelic you know in in a certain sense I mean there are other psychedelics of course there's a whole there are hundreds of them psilocybin Terry used to says psilocybin is made for man or made for humans is what he meant. And it's true. If you think about it, it's non-toxic. It's it's chemistry. It's it's very similar to our neurotransmitter chemistry, which is why it works. Uh, and it's a accessible, profound, but safe psychedelic, you know, that that people can use. And, you know, unless you're completely stupid about it. I mean, these these variables that people talk about that come up, you have to pay attention to set and setting, right? This is important. Where you take it, take it in appropriate setting. And set is a more complicated thing because set is you. Set is everything you bring to it. Your expectations, your you know uh your intentions, but really everything that you are and have experienced up to the moment that you take that trip. That's the set. So that's by far the most complex part of this of this triad and and of this this this diad. And really it's a it's there there are two other variables obviously what is the medicine what is the medicine and what is the dose. So but but the the parameters that define set and setting are the parameters that can define a you know enjoyable beneficial trip from a more difficult trip you know or >> I mean the mushrooms are inherently not dangerous you know uh uh like you know if you if you're careful about where and when you use them it's very hard to get into trouble. You can't overdose on them, you know. Uh you'd have to eat like a a couple It's been calculated out that you would have to eat a couple of pounds of dried mushrooms to get anywhere near a toxic dose, you know. So, so they're they're a good psychedelic. They are maybe the best psychedelic, you know. I mean that I have great respect for others like LSD. I've had wonderful experiences on LSD on D on DMT in the smoked form. Uh many people uh talk about themselves as psychonauts. Um I am sort of not a psychonaut. I am a not I'm a not I am a psychonaut not or something. I I uh Sasha Schulen, I'm sure you're familiar with his work, right? Yes, >> there was a psychonaut. I mean, he >> he systematically, he was a good chemist. He systematically made all these compounds, tested them on himself and his wife. The only honest way to do it, you know, really give it to a mouse, it's meaningless. What does it tell you? You know, you have to take the psychedelic in order to understand how it work, how it works. And he did he very carefully bioassayed all of these at different dose levels kept careful notes and produced you know those two enormous toms tal and pecall which you may be familiar with. So now he was a psychedelic he or he was a psychonaut. He went about it in a very systematic way. It was like you know here's measculine is the basic template for a lot of his work. So then what happens when you take these this methoxy and move it down here or that hydroxy and move it over there and you know and and you're a chemist right you so you understand this is structure activity relationships and medicinal chemistry this is something medicinal chemists do they take an active compound and they make variations of it to see how does that affect the pharmacocinetics how does it affect the the absorption and the and the receptor specificity and whatever the targets are and all that and uh and that's just a standard practice but most of the compounds that people do SR with are not psychedelics. So what's really fascinating about psychedelics and and doing SR of psychedelics is you can see this direct relationship between molecular configuration and the experience itself. You know, you can take measculine as as sort of a baseline for example or DMT in the tryptoine family as sort of a baseline and then you can tweak the molecule in various ways and see what changes, how is it different. that can give you a lot of insight into the processes going on, what brain structures are being activated and all of those things that pharmarmacologists like to do. And now now of course we have neuroiming technology. You can you can uh you know you you can give somebody psilocybin and shove them into an fMRI and watch what's happening in the brain. You know it can open a window onto the brain. But the important thing to remember about that that's great you can say this part of the brain is activated this part is suppressed. But it's important to remember that you're looking through a window. you know that you're looking at something happening, you're not experiencing it. I'm waiting for the technology where you can uh you know, you can take one of these things and you can telepathically transmit the experience to another person or put it on the screen or something like that. It'll probably never happen. >> I think a lot about subjective phenomenology. I love this. But it brings up an interesting question as of of if my experience even can be mapped onto your experience, right? We don't we don't really know if that if there is a conversion process that that does that. If a lot of my experience is bodily and then you don't have much bodily experience at all, then trying to map bodily experience from me on to you kind of might just be like, well, that doesn't really work. It's sort of there, but it's like trying to translate, you know, concepts in other languages into languages where it's like they just don't really have that concept. It doesn't really work. you might get you might get some of the way there. But so an area that I wanted to really touch on to to to to double back on the you know the contribution of the McKenna brothers and something I'm super interested in is I have asked many psychedelic scientists what they think about DMT entities and machine elves and the most common sort of materialist run-of-the-mill neurochemistry pharmarmacology explanation is related to kind Terrence McKenna imprinting the idea of the machine elf into the collective subconscious of the universe in a really sort of dramatic way. Um you know some people will believe there >> this is a problem. So yeah this this is a problem and that that undermines the objectivity of the thing. Yeah. If Terrence hadn't seeded this idea of the machine elves, >> then would people be having these experiences? >> I I'll share something. I don't think I've ever seen a machine elf myself, frankly. I've seen lots of things. >> Wow. >> I would not call them machine elves. I don't know what I'd call them, but they don't present that way. So, you're absolutely right. Terren Terrence has seeded this meme into the collective unconscious and it's messed up the experience because a lot of people are poisoned or not poisoned but preconditioned with this expectation. You probably know the guy on the who's on the cutting edge of all this and that's Andrew Gallamar. You know his work. >> Yes, we've spoken and Galamar is amazing. We've spoken. And he's coming back on again soon for sure. Okay. Have you read his book? >> No, I haven't. It's on the list. I have way too. I really need to. Yeah, >> he Yeah, you need to. He's written a lot of several books about this, but it's all the same thing >> uh theme pretty much. And the latest one is called Death by Astonishment. And the one on my it relates to a question somebody asked Terrence in one of his seminars. They asked, "Can you die from taking DMT?" And Terrence said, "Only if you can die from astonishment," which I think is pretty apt actually. And uh yeah, I've had Andy on my podcast, my Brain Forest Cafe podcast. You should you should check that out. We had a great talk, you know, and he's a brilliant guy and he more than anybody else has has studied this thing. And the question becomes, you know, and he has the tools being a pharmacologist and a neuroscientist and all that to ask some pretty interesting questions and about just what the hell is going on when people encounter these entities. Uh, are they real? Well, that's a loaded question, right? Because anything you experience is real. So, it's real. in that sense. But is it out there somewhere or in here somewhere or over there somewhere? And you know in in the psychedelic state these terms are malleable you know I mean there really is no out there or in here over there it's all this is part of the reality hallucination that we construct in order to experience ordinary day-to-day consciousness and be able to you know pour ourselves a cup of coffee or drive a car or do all these mundane things that that you know we have to that we have to do to to exist. So So uh uh Andrew has got has been speculating about this and thinking about this very deeply for a long time. And you know some people say well it's uh you know these are these are extraterrestrials you know that are somehow in touch with it. But if you think about that, maybe they're extraterrestrials. They're more like hyperdimensionals or something. Because if they're extraterrestrials, if they're really like, you know, embodied entities like you and I are inhabiting a planet somewhere. I mean, I this gets into some interesting areas, but I think that uh you know, I I I and and like I said, Terry and I grew up, we were drenched in science fiction when we were teenagers and and extraterrestrials, interstellar travel, and all that. Fact is, I don't think it's happening. I I think the I think there are aliens out there. There's got to be aliens out there in the universe. >> Yes. >> But the distances and the times that separate us are so vast. That's why we haven't seen them, you know, or maybe we have. Some people say we have but Andy's idea is so then okay they're not extraterrestrials nor are they necessarily delusions of our imagination. They seem more real than that. And he his book also uh goes into like people say well you could say well these are these are sort of like dreams you know uh the things you see are sort of like dreams but as he points out people don't have these kinds of dreams you know people see other people and they see animals and they see plants and they see familiar things in dreams not this completely alien kind of space that you get into. And he has finally settled on the idea and you know and and here here it becomes question is how do you test some of this stuff? How do you talk about science? How do you approach that phenomenology with any scientific tool, you know, to determine, well, where does this come from and who are these people or these entities or or whatever just just what the hell is going on? He postulates that there is a quantum level of reality that is uh non-local and that it basically permeates spacetime. So that gets over the uh you know the separation issue and that this non this quantum realm of phenomenology is inhabited by intelligent entities and that's who what we encounter when we take DMT and go to these places. you know there's there's a lot of people not a lot of people there I should say there are a few clinicians who have the permission and the expertise and the uh access to the tools to to do it but they're doing these DMT extended states uh experiments you know where they'll give you you you take DMT as a through a catheter and you could administer it so you could prolong the experience uh for theoretically as long as you want uh way beyond the 20 minutes that it usually is. You can go for an hour and people are pushing the time. You know, I I hear there's a group in Switzerland that's pushed the DMT extended stay to like five hours. uh well simply extending it you know I mean that's interesting but by extending it you have time >> to look around and and explore what's going on and uh which is really what we were why we went to Lurera in the first place we had this very naive idea that if we could find this orally active form of DMT we could extend the state well now the clinicians have taken over and they're they're actually doing this. I was concerned when you know u I know some of the people that are doing this work and I was concerned that this could be very dangerous. You know what what happens when you don't come back? Do you do you not come back? Does that ever happen? So far it seems to be safe. Um I probably won't be doing it but uh but other people are are doing it. Interest interesting that you're cautious cautious enough about the extended states that you're not sure that there would be >> I guess at every increase in time step you just have never tested if you're going to hit some threshold of mental stability and they're going to be able to get back. There might be a pushing too far destabilizing our models of our self and the world too much that they just aren't able to reroute back to the self. That's a really weird and interesting idea, but I I I Andrew is awesome. I think all of his work is super interesting. I'm curious if you think there's something specific about DMT. Like is DMT special? Is it can because people report entity encounters on psilocybin people, you know, is there something uniquely special about DMT? >> I think there's something special about DMT. Yeah. I mean psilocybin is converted to psilocin in the body right so it's so psilocybin is in some ways the perfect orally active form of DMT in a certain ways I mean you you can get extended DMT through these extended states but really psilocybin or psilicin the active molecule is pre-engineered effectively to to give you an extended DMT uh type experience. Maybe again like Iawaska, maybe not as intense, but at higher doses you can get to some very DMT like places on on mushrooms. And uh so uh you know I I I I but so I I I think that DMT and silos silicon really is the molecule we should be talking about. I think they are very similar and I think they are very special because they seem to open up this portal uh or this maybe this quantum this quantum dimension which is always there which per which is as Andrew described it it's some layer of reality that is just not available to experience but somehow you put your brain in this very special neurochemical state and you can perceive this thing which is always there you know it's always there but you can't perceive it and these are not dreams you know I mean we understand physiologically he talks about this physiologically we know where dreams come from we know what generates dreams in the brain you know it's very much involves the hippocampus and it involves memories past memories and and the dreams that people have can be very bizarre but not as bizarre as this you know I can be they can be quite quite bizarre but they're still rooted in our understanding of reality you know they're re yeah related to that reality hallucination that we build so it's fascinating stuff you know and uh people you know there are whole groups now that talk about these DMT entities. There have been several symposia and so on. what I'm and I've been to some of them and I' there's one going on right now as a matter of fact in in Aiza some of these uh major uh you know investigators and uh I mean I'm fascinated by it but on one hand well you know the perpetual question what are these these apparent intelligences that you encounter in this state and what are the characteristics of this is you get the sense that they have information. They want to tell you stuff. They have they're very eager to show you things and for you to understand. And you're looking at these things that are they machines? Are they objects of art? Are they just just what are they? You can't tell. They have this sort of super hyper technological cast to them, but you can't really tell what they do or I mean they're beautiful and they do things, but what do they do? And uh you know are these and if there really is another dimension of entities that access the deepest parts of our brains, our mind through DMT, one question that you need to ask or at least consider, do they have our best interests at heart or not? you know, should we be worried or, you know, are they out to do us harm? Are they out to help us? And and how and and if they're out to help us, how are they going to help us other than make us realize that there's another dimension? I mean in it's like it's like you can have these experiences but uh and you can bring back the memories but you know it's like okay so where is the blueprint for the starship? Where is the blueprint for the time machine? Where is the practical you know consequence of this if they have all this information and maybe that's not their agenda. Maybe they're not going to tell us about, you know, uh, hyper technologies. Maybe it's not that. But certainly the realm that you visit at high doses of DMT and in these extended states, it seems like it's a very this is this is not the same as what a shaman the dimension that a shaman uh visits on say Yakuana snuff or something like that. Or maybe it is maybe their their interpretation is just different. So you know there's lots of work there's lots left to be done and uh one thing it'll provide uh you know hopefully opportunities for you know employment steady employment for neuroscientists and pharmarmacologists beyond that I'm not sure what it's going it's funding a lot of DMT is funding a lot of science communicators at the moment it's the DMT DMT entity are contributing to, you know, a a sizable amount of the revenue that keeps my business my media company up and float. So that's one part, but I mean another another contribution really does seem to be mental health. It does seem like DMT entity encounters specifically are related to therapeutic outcomes and not just arbitrarily mystical experiences, but there seems to be something about a DMT encounter that seems related to mental health outcomes. I think this has been shown in many studies. David Luke told me about this who's ran really big DMT surveys. Matthew Johnson told me about this who ran some of the earliest psilocybin John Hopkins studies with rolling. So there seems to be good data in this. So like the woowoo skeptic who's saying well who cares these are just hallucinations. Well even if they are just a hallucination if it's having this mental health outcome that is impacting people some then it's worth studying. It's worth and funding. AB: Absolutely. I don't I don't dismiss them and and I don't say that they're just hallucinations. I mean, these are not like any other hallucination that you could have on on pretty much any other psychedelics other than the tryptophine. So, I don't think they're just hallucinations. And it's interesting that David says that that these entity encounters uh seem to be linked to therapeutic a therapeutic outcome. I hadn't really heard that, but but that's interesting. So maybe that's you know maybe these are quantum entities and maybe their ultimate motive is to heal us and make us better and uh and you know god knows we need healing as a species and as an individual. So perhaps they are benign and uh uh maybe these are like the avatars from another dimension of effectively shamanic entities that are you know using these techniques to uh to heal people which is you know what shamans do that that's the basis of shamanism. You could use psychedelics and and songs and ritual and all of these things. Um, and you can bring about healing in in these traditional context. Well, maybe that's what's going on with these entities. >> I have no life. So, >> it's it's interesting and so incredibly exciting regardless. I love all the science being done on this at the moment. >> Dennis, you're you're such a legend. You're such a motivation for I think so many so much science that's done today. so much communication that's done today. I've known about you, you know, for at least probably a decade and a half and, you know, I've wanted to talk to you since then. Your story is incredible. I know you might have you might be annoyed repeating it, but I think every time you you're probably detached from just how insane and incredible and interesting that story is because you've told it so many times and lived it. But my god, to hear it firsthand, it's just truly remarkable. I hope we have many more conversations. I want to dive in a bit more in like the Iaska pharmarmacology, your your collaborations with Brian Roth. We I would love to touch on that a little bit more next time maybe, but you know, I thought today was was awesome. Thank you so much for your time and I really appreciate it. I thought it was great. >> Very much appreciate it. Very much appreciate it. Yeah. Uh thanks for inviting me, Evan. We we can circle back and continue the conversation some other time. So, >> let's do that. All all the best. All the best. >> The Giant Shoulder mission is to explore radical ideas in biology, neuroscience, and consciousness and elevate those stories to the highest possible level while keeping them accessible to everyone. If this interests you and you want to support independent science, then please consider subscribing to the clips channel. Check out our 26 neuroscience book. Can download it for free.