Board Thread:Episode Discussion/@comment-4141313-20181110034633/@comment-10390252-20181116125603

I'm guessing that the lunar debris bombardment had something to do with it. If the debris had high dust concentrations, the amount of energy in the environment could have fast-tracked evolution.

Or maybe, Salem had to wait a few tens of millions of years until another human race evolved. Which might explain how she went totally insane.