Dennis McKenna

can begin to kick in, right? But what propagates that over evolutionary time? Well, this process which is known as Epigenetics.

Epigenetics is a mechanism where effectively for acquired characteristics being propagated over generations. And trauma as well, right? Trauma, yes. All these kinds of things. Drug, other kinds of drugs, other kind of not so good drugs will also propagate. So Lamarckianism used to be...

Epigenetics is a mechanism where effectively for acquired characteristics being propagated over generations. And trauma as well, right? Trauma, yes. All these kinds of things. Drug, other kinds of drugs, other kind of not so good drugs will also propagate. So Lamarckianism used to be...

Epigenetics is a mechanism where effectively for acquired characteristics being propagated over generations. And trauma as well, right? Trauma, yes. All these kinds of things. Drug, other kinds of drugs, other kind of not so good drugs will also propagate. So Lamarckianism used to be...

was a theory of evolution that was kind of debunked, you know, that was like, well, giraffes have long necks because they're always straining to get the leaves at the top of trees, right? So eventually they got long necked. There was something too that it didn't, eventually they got long necked. So there wasn't maybe an environmental influence, a selection. The tallest giraffes got the leaves.

was a theory of evolution that was kind of debunked, you know, that was like, well, giraffes have long necks because they're always straining to get the leaves at the top of trees, right? So eventually they got long necked. There was something too that it didn't, eventually they got long necked. So there wasn't maybe an environmental influence, a selection. The tallest giraffes got the leaves.

was a theory of evolution that was kind of debunked, you know, that was like, well, giraffes have long necks because they're always straining to get the leaves at the top of trees, right? So eventually they got long necked. There was something too that it didn't, eventually they got long necked. So there wasn't maybe an environmental influence, a selection. The tallest giraffes got the leaves.

That's how natural selection works. But this happens on a more biochemical level and it has to do with the unwrapping of segments of DNA that are bound up in these bodies called histones in the chromosomes. And under the effect of environmental influences, these inaccessible segments of DNA can be unbound and expressed.

That's how natural selection works. But this happens on a more biochemical level and it has to do with the unwrapping of segments of DNA that are bound up in these bodies called histones in the chromosomes. And under the effect of environmental influences, these inaccessible segments of DNA can be unbound and expressed.

That's how natural selection works. But this happens on a more biochemical level and it has to do with the unwrapping of segments of DNA that are bound up in these bodies called histones in the chromosomes. And under the effect of environmental influences, these inaccessible segments of DNA can be unbound and expressed.

And if the neural changes are related to that, the activation of these segments of DNA, then that could actually be propagated across generations. Wow. So that's a plausible mechanism for the stone ape theory. It's not so crazy. It's like, of course.

And if the neural changes are related to that, the activation of these segments of DNA, then that could actually be propagated across generations. Wow. So that's a plausible mechanism for the stone ape theory. It's not so crazy. It's like, of course.

And if the neural changes are related to that, the activation of these segments of DNA, then that could actually be propagated across generations. Wow. So that's a plausible mechanism for the stone ape theory. It's not so crazy. It's like, of course.

What else can you think of that would lead to this complexification of the brain other than the fact that hominids in this environment were extremely important? We're exposed to all sorts of environmental pressures, but I don't think learning to throw spears better was necessarily enough. But this was something that was part of their diet, and it could have this effect over evolutionary time.

What else can you think of that would lead to this complexification of the brain other than the fact that hominids in this environment were extremely important? We're exposed to all sorts of environmental pressures, but I don't think learning to throw spears better was necessarily enough. But this was something that was part of their diet, and it could have this effect over evolutionary time.

What else can you think of that would lead to this complexification of the brain other than the fact that hominids in this environment were extremely important? We're exposed to all sorts of environmental pressures, but I don't think learning to throw spears better was necessarily enough. But this was something that was part of their diet, and it could have this effect over evolutionary time.

I mean, it makes perfect sense. It's one of these theories. It's a plausible theory. How do you prove it?

I mean, it makes perfect sense. It's one of these theories. It's a plausible theory. How do you prove it?

I mean, it makes perfect sense. It's one of these theories. It's a plausible theory. How do you prove it?

There's no way to disprove it that I could see. Maybe if we had one of those time machines that this guy is going to invent for us, I would love that. I told you I was totally obsessed with time travel. I'd go back immediately to the Serengeti plane a couple of years ago and see what the hell was going on.