Well, we know for certain that Genesis is wrong, for example, since Genesis 1 said that cattle came before man, and Genesis 2 said that man came before cattle. So that is an actual contradiction; one of them must be wrong. Therefore Genesis contains at least one provable error. (We've gone through this before.) The one mentioned above, for example. Another is that God fixed all the stars in the firmanent, which means he put them in a solid dome over the planet. We now know that that's not the case.