Rachell Powell

speaker

762 appearances 1 recordings 1 series first heard Jan 2026 last heard 26 Jan

Rachell Powell’s voice in public audio — every appearance, attributed to the second.

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Recordings per month over the last 12 months — 1 in all, peaking in Jan 2026 with 1.

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what we would talk about as brains.

I mean, brains are like, you know, on a continuum of neural complexity, right?

So you have like ganglia, nerve nets, and so forth, and your brain's like, when does ganglia become a brain?

Well, I mean...

Evolution doesn't care, right?

So that's the question we can talk about, but we don't want to get too bogged down in artificial distinctions.

That's great.

Yeah, exactly.

So I mean, you do get the repeated evolution of brains in encephalopod mollusks, in invertebrates, and arthropods in reverse order.

And I think that this is where you get into some of the ongoing work in comparative cognition.

And this is, by the way, why the convergentist approaches are so important.

I mean, historically, there was this focus in comparative cognition, a very heavy focus on homology.

So it's like, well, where's consciousness in humans?

It's in this part of the brain.

No, of course, it's not the pineal gland, right?

But here's a portion of the brain that we associate.

Let's look for that brain in other lineages.

Oh, they don't have that kind of brain, that portion of the brain?

Then they don't have consciousness.

It's a ridiculous way of thinking, because of course they could independently evolve a structure that has the same function, right?

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