Since scientists supposedly only base their findings on what they can observe, then according to them, no person for which there is no proof that he existed in the past, ever existed. No city of which they can't find remains, existed. No wars that weren't documented, actually existed. But they don't mind making up pre-history and new history that's never been documented anywhere like the new history of the Jews in order to pass along that apes bred human descendants.

So this cuts the knowledge of scientists down to only a fraction of what other people know and adds events that were never documented in history. And of course, the common person who can't think for himself, puts blind faith in these people whose knowledge is extremely limited or made up. That's the most irrational part of all.