Yes, of course that's right. But I thought you were the one conflating collective knowledge with individual human intelligence, when you said "behaviorally". Behaviors being due to ideas, not nature (I don't much rate nature's effect on smarts anyway).

Maybe I need to spell this distinction out next time it comes up, which will be the next ancient history thread, probably. I guess the endless repetition of "they were just as smart as we were you know!" is in order to counteract an unstated idea that the ancients were some other species, like orangutans in bronze armor, I don't know. Maybe it's common to vaguely think that about them? But this gratuitous counter-point should be on a strictly genetic basis, or else you'd be accidentally denying that ideas improve.