
The persons who believe in this history have their "proves" (not empirical proves, of course), but they have some books that explains it and give them "good" arguments. But... we can have the same "proves" (texts or physical things) to demostrate that a famous persons existed (persons like Jaume I, or Alejandro Magno). We have texts and maybe some physicall "proves" to demostrate that they existed, but no more. However, we believe it...
But it can be that the existence of these "real" important persons was really a lie, an elaborated plot or a meticulous conspiracy? It's curious...
Maybe I'm too sceptic, but I'm not refering to the content or logic of these proves, I'm refering at the types of proves.