For me, that is kind of the point. The World is a mess. There is no way to reconcile all of the different mythologies never mind adding in real world history and still have the game of Scion. There for we don't try to reconcile them... All Myths are True. In any given game you can certainly focus in on one mythology (or a small set of them) and use what you want, but the setting doesn't rule out any options. It certainly can be messy and sometimes contradictory but I at least have no problem with that....