Ethnobotany is the study, in the simplest term, it's the study of plants and people. It's the study of the way that people interact with the plants, usually in traditional societies, but not necessarily. So all the things that people use plants for, ranging from medicine to construction materials to textiles to foods, you know, is all legitimate material for ethnobotanists to study. And ethnopharmacology is a little more restricted because ethnopharmacology focuses on, I mean, the formal definition of ethnopharmacology is the interdisciplinary scientific study of biologically accurate... ...substances used or observed by indigenous people. So there are a few caveats. For one thing, it's not restricted to plants, right? A lot of what ethnopharmacology studies is, might be things that come from animals. Obviously, a lot of it has to do with the study of plant medicines or things used as medicines. But also, toxins are a good part of it. You know, the study of arrow poisons, for example, is certainly part of ethnopharmacology. So ethnopharmacology, as the name implies, the ethno part is about people, and the pharmacology side is about pharmacology and the study of drugs. So it's interdisciplinary. It focuses on all the ways in which people interact with drugs and toxins, you know. So it includes everything from... ...pharmacology to chemistry to anthropology to, you know, medicine, public health, you name it, toxicology, all of that. It relates to shamanism because in these indigenous or traditional cultures, usually the shaman is the person with the knowledge of the plants that are psychoactive or medicinal, he's the person, he or she is the person that knows how to use these things. They're the keepers of the plant knowledge, in a way, so that's... I mean, they're more than herbalists, but they're also the herbalists. They're the ones that know their medicines and how to use them for whatever purposes, spiritual and medical as well. In shamanism, and one of the things that distinguishes it from mere herbalism, is that the shaman is a specialist in altered states of consciousness. The famous anthropologist and scholar, Merci Eliade, calls shamanism the archaic techniques of ecstasy. And in shamanism, the shaman deliberately... is a master of various techniques for inducing altered states of consciousness, which may involve the use of psychoactive drugs, but not always. There are other techniques, too, that can be used, like frenzied drumming, or dancing, or flagellation, or extremes of, you know, physical stresses, to induce altered states. But the idea is to deliberately induce an altered state, and the shaman... goes on a journey. This is the primary mode throughout the world, that the shaman journeys to the center of the world, which may be visualized as a tree. It's often visualized as a tree, or some kind of axis. But that axis unites the upper world, the middle world, our ordinary world, and the lower world. And the shaman is a person... who is able to navigate these realms, and, you know, knows how to move around in these realms, and actually retrieve information and come back. Or, a lot of what the shaman does is curing. It's related to curing, and in shamanic traditions, the understanding often is that, you know, illness is caused by loss of soul. And that the soul has wandered off, and is out in these realms. And the shaman has to go and find the soul, and restore it to the person's body, and then restore, you know, restore... cure the illness that way. Whether the illness is physical or mental. And there's not really a distinction always made. You know, in fact, all illness in these traditions is usually understood to basically be due to witchcraft, or, you know, some sort of malevolent influence, even physical illness. So the shaman is a specialist in this technique. And they are often a specialist in the use of plants for inducing altered states of consciousness. That's the realm. So in some ways, the shaman fulfills a function for the society, is in that he or she, is the person with one foot in both worlds. He's a foot in the real world of everyday human affairs, and the world of spirits and the supernatural. So they can be a conduit of communication between those worlds. And in some ways, that's like a priest, you know. A priest represents the people to the realm of spirits and so on. But the shaman actually goes to these worlds. And not just talks to these people, to these entities or whatever, but moves in these dimensions, which are very real experimentally for the shaman, and for the people. And so curing is part of it, but also other things of concern to the community. Where to look for game, for example. Where to find, when to plant the crops. All of this stuff comes from this realm of sort of supernatural knowledge. So the shaman is a wise person, the keeper of knowledge, and the connection to knowledge. So that's kind of a long-winded explanation. But the shaman has, you know, wears many hats in some ways. He or she fulfills multiple functions for the society. So these psychedelics and other types of what you might call psychoactive, psychoactive molecules are found widespread in plants, and even animals, and fungi, and the whole thing. I mean, they're all over the place. So I think in one sense, that seems remarkable to us. But in another sense, we shouldn't really be surprised, because this is a reflection simply of biochemical evolution. I mean, we are evolved from the same ultimate origins that the plants are and the fungi are. So the fact that there are molecules in these organisms that mimic neurotransmitters and interact with neurotransmitter receptors and so on is just to be expected, in a sense, in that, you know, most of these psychoactive molecules are, you know, one or two steps from amino acids The alkaloids generally come from amino acids, and especially the example of DMT, where, you know, tryptophan is an amino acid, and it's in all organisms because it goes into proteins. It's one of the amino acids that goes into proteins. But two enzymatic steps, two steps away from tryptophan, is DMT. And the enzymes that... do that conversion are pretty much found in any cell. So it's not too surprising, in a way, that DMT is very widespread, because it's only two steps away from what they call primary metabolism. In other words, the metabolism that we share with everything. The fact that these neurotransmitter-like substances are out there in the plant kingdom, or the fungal kingdom, or even the animal kingdom, is not as remarkable as the fact that, you know, indigenous people living immersed in these highly chemically diverse ecologies have become, you know, very clever about discovering these things and figuring out how to use them, you know, in their shamanic traditions. And this is... You know, this in some way is more remarkable than the fact that the compounds are there. It's that people have evinced a lot of ingenuity in digging these things out and figuring out how to make them active. Like, for example, again, DMT is a very powerful psychedelic, but it is not orally active. So you can eat plants all day that contain DMT and nothing will happen, because it's inactivated, as you know, by an enzyme in the gut called monoamine oxidase. And... But indigenous people have figured out that there are also plants that contain monoamine oxidase inhibitors. And they've figured it out through trial and error or whatever that if you combine a plant containing DMT with a plant containing a monoamine oxidase and MAO inhibitor, then it becomes very active. And how did they figure that out? Was it through trial and error? Not so clear, you know, because there are many plants out there and many potential combinations. So how did they figure that out? Nobody really knows. You know, but the point is they were, you know, motivated enough to seek out these altered states that they actually did figure out. They approached it, I don't know how, either accidentally, which seems unlikely, or through trial and error, which seems also unlikely. Who knows how they figured it? Maybe animals do this thing. Maybe they watch animals. I mean, what they will tell you, as you know, in South American traditions, you say, how did you figure out how to combine, you know, Banisteriopsis bark, which contains the MAO inhibitor, the leaves of chacruna, which contains DMT, and come up with this very powerful orally active psychedelic. They will say, well, the plants, the plants told us how to do this. And, you know, as a Westerner, you just scratch your head and you say, well, that's ridiculous, you know, I've never heard such a ridiculous thing. But they'll always tell you that, you know, so who knows? You know, there does, seem to be, in some way, I mean, the shamans and other people that use these things will say, you know, half the reason they take these, it's not just to induce altered states, it's to learn things. And a lot of what they like to learn, a lot of the reason they take them is to learn about the properties of plants. You know, what they're good for, what their biodynamic properties are, what they might be used for, what they might be used to treat or cure, or what their psychoactive effects are. So a lot of what motivates the shaman, I think, in their relationship to nature, is the same thing that motivates scientists. The shaman is a kind of scientist. It's curiosity. You know, they want to know, what does this plant do? You know, and what does this plant do if I combine it with this plant? It's a very experimental approach that they're taking to all this. And they do learn. And I think that one thing that shaman do, and again, if you look at the ayahuasca tradition, one thing that they do is in exploring these altered states, they have become very adept at sort of monitoring their own inner landscape and their own physiological state. So, you know, they sort of have a baseline. You know, they know what the baseline state of ayahuasca is. And then if they put another plant in there, in that mix that they want to investigate, they can see how does that move the experience away from baseline. So in some ways, they can acquaint themselves with what that plant might do. It's a sort of hands-on, direct, experimental way. And I think that that's a lot of what goes on in this kind of shamanism. This is how this pharmacopoeia gradually built up over, you know, centuries. Essentially through experimentation, through experimental, like empirical bioassay, if you will. Well, I do. Actually, I do personally think that it did. And I think that a lot of what is coming out of sort of the frontiers of neuroscience right now supports that. You know, we now have these brain imaging tools and these sophisticated tools so we can look at people, what's happening in their brains when they are in profoundly altered states of consciousness, either on psychedelics or in, you know, in mystical states of various types, or deep meditation. We can actually see what part of the brain is lighting up in a word and mediating these things. So I think, I mean, just last week, there was a whole new study published about how they've located what they're calling the transcendent states. You know, so the brain is architecturally and physiologically set up to experience these transcendent states. And certain drugs will activate them and certain practices will activate these brain areas and there's a lot of overlap, for example, between, you know, the areas of the brain that are activated by psilocybin, which is one of the ones that we're talking about, deep meditation, you know, there's a lot of overlap. So I do think that, you know, that the spiritual experience is kind of built into the human brain. And the larger question is, or the more interesting question is, why should it be? And what is the use of that? What is the evolution of the brain? What is the evolutionary advantage of being able to have transcendent experiences? Or is there one? This whole issue about what language is and the association, you know, of sound and symbol and all that, which is the basis of language. And language, more than anything else, probably is what sets us apart from everything else in nature. I mean, we are immersed in an ocean of language, an ocean of symbols, where symbols are linked to sounds. And, you know, I can sit here and utter meaningless sounds, essentially, inherently meaningless sounds, but they make sense to you because they evoke meaningful mental pictures. And this is the thing, you know, and the brain has the ability to experience synesthesia. And synesthesia is one of these functions that, you know, the translation of one sensory modality into another. So, you can, you know, hear colors and that sort of thing, or see sounds and that sort of thing. And that is also the basis of language when you think about it. And psychedelics are interesting in this respect because psychedelics are one of the few ways that you can reliably induce these synesthetic experiences. It is very common to have synesthesia, you know, on psychedelics. Some people are genetically endowed with synesthesia. And they just experience that all the time. I have the strong intuition that children below a certain age are probably spontaneously synesthetic all the time because the brain structures that separate these different sensory modalities are not set in place yet. So, it is very common for children to have synesthetic experiences. And that is a part of brain development and growing up and learning to speak and all that. If you look at genetically synesthetic people, about 1 in 100 persons is genetically synesthetic, meaning it happens spontaneously to them. If you look at those people, it is very common, it is usually the rule that it is very closely linked to their apprehension of words and numbers. And they will say, you know, the number 13 is smooth and hard and dark blue and for them it is absolutely an apprehendable thing that it is like that. Or the letter A is purple polka dots. They are not making this up. This is real for them. So it says something about the way that the centers in our brain that process meaning, process language, work and how they tie into sensory pathways. You know, if you think about the fact that psychedelics can evoke this synesthesia rather easily, I mean, you don't have to go very far before you can, you know, you can imagine a hungry primate, a language-less primate out there foraging on mushrooms or whatever, accidentally or whatever, or deliberately, but first initially accidentally they take them. Mushrooms are a good candidate because they don't require any processing. No MAO inhibitors required, you just reach down and eat them up and it spontaneously elicits this thing and it very easily triggers synesthesia. And, you know, you can imagine you know, the person finds this is why chanting and singing and all this has so much to do with shamanism because it modulates the visions. So that person can, you know, start shouting and singing and chanting and suddenly what's happening behind the eyes goes crazy, right? And then they pick up a stick and start beating a hollow log and hey, that's even cooler, you know, they bring in rhythm. Well, so they've just invented language, music, musical instruments all that stuff poetry you know, all in one productive session. And it makes you feel good. It induces ecstasy. So you only have to do it spontaneously or accidentally a couple of times and then you get it, you know, and then you sort of say hey, that was great, that made me feel good. So then you go back to repeat it. knows about the way to interpret these myths, you know, but in the forbidden fruit it was the tree of knowledge. Right? It wasn't I mean, it was knowledge that was forbidden. It was you know, I mean, curiosity was not encouraged. We were you know, what was encouraged or what we were more or less commanded to do in the context of this myth was to remain not really human. You know, to remain like animals. Innocent. And to not know about things like our own individuality and things like death, you know. And that was the thing, I think you know, and at some point I mean, the whole thing about Adam and Eve and the tree of knowledge is of course a myth but it's really about at what point did we separate from did we achieve self reflection? Right? This is what animals don't have. Well, by and large, I mean there are evidence that maybe some do to some extent, but I think two things. The idea that, you know, you have an eye sense, a sense of an eye and the sense of probably knowledge of, or the intuition of your own mortality. That's the loss of innocence. I think that in the context of fundamentalist Christianity thinking is not encouraged. You know, I mean that's what they're trying to get away from. That's the whole thing, you know. You lost innocence. You know, you lost innocence because you asked too many questions and you thought too much and, you know, you questioned things, right? And this is what Christianity discourages, at least the fundamentalist type. Christianity is sort of foisting the notion on people that, you know, there are simple answers to complex questions. I mean, I call it simple answers for simple people.