I've read scientific books and o-other pieces that say about the same for my world. We know p-plenty about humans, as long as it's been published, t-though I'd bet the texts we used in my Ph.D program were a f-few editions back. Seeing as we couldn't, uhm, just go g-get new ones. Computers made everything s-so much easier so even a book that was falling apart or severely, uhm, waterlogged could be scanned and preserved.

[They... made due with what they had.]

I'm no biologist b-but a lot of them suspect monsters might have b-been made from similar routes as humans. To f-fill an evolutionary gap of some sort. But it's still pretty, uh, vague.