The brain is not an onion with a tiny reptile inside (2020)
After reading this article as well as the relevant Wikipedia entry [1], I still don't get what's supposedly "wrong" with the triune brain model.<p>In fact, this article seems to set it up as a bit of a straw man. The main rebuttals in this article are 1) that evolution is branched rather than linear, 2) that larger brains aren't necessarily more complex, and 3) that evolution modifies existing brain structures in addition to adding new layers.<p>But all of that seems rather obvious, and doesn't really refute the triune brain theory at all.<p>Isn't it scientifically true that we have a basal ganglia which evolved from reptiles, a limbic system also present mammals, and a neocortex that works similarly to that in other primates, dolphins, and elephants? And each of those map to certain types of behaviors, that we see in these species?<p>The triune brain hypothesis doesn't seem "wrong", it just seems like a simple categorization that is useful for making big-picture distinctions.<p>Am I missing something? I literally don't understand what is even being "refuted" here, because the refutations don't seem to match the claims at all.<p>[1] <a href="https://en.wikipedia.org/wiki/Triune_brain" rel="nofollow noreferrer">https://en.wikipedia.org/wiki/Triune_brain</a>