Board Thread:Speculation House/@comment-14138255-20141031002615/@comment-73.42.187.52-20141215032634

^there are some assumptions made there that at this point we don't have enough info to verify.

1: humans are local to remnant.

2: faunus are not related to humanity as far as development

3: Grimm have existed throughout the history of both races

4: Grimm were always a threat

some of these are more/less stated but the creation myth being a lie/deception is often something preserved as a major plot point for later in a series.