[carlmr]

>The traditional view of Jews & Christians being that moses wrote genisis is a fact about the world. It can be either true or false. They either believed that traditionally or they did not. Both it and its negation cannot both be true.

How so? If there was more than one early Jew/Christian they could have held different beliefs about that. If you want to be exact, you can't state any facts about the beliefs of somebody, living or dead. And if there's more than one person you can't say they all held the same belief.