I've always been a bit curious as to how all of these seemingly separate species can interbreed and produce fertile offspring... And the best I've come up with so far are these theories:
1) a lot of these paraspecies are actually subspecies of humans. Homo sirenes, Homo incubos, Homo sphinges, et cetera.
2)
Something made things that way.
3) A different possible, theoretical
Something that the ParaSociety might be hiding from, among the humans.
(Discussed in an earlier thread, I can't remember where... Basically, why are the para's hiding? Are they hiding from the humans, or using the humans as camouflage to hide from
Something else?)
So... ParaSociety altered itself collectively to better hide among the humans?
4) A wizard did it, and Paul just wants me to shut up and enjoy the story
