His statements are one of the well founded issues on this specific topic. The position depends upon who's initial people you use as the basis for comparison (Jews or the people who were there before Jews). His "science" is saying, "trust the Jews", using their position as the foundation for comparison, and he incorrectly states there is no basis for any other position. All of which is extremely bad science. Especially given there is well founded science, ancient history, genetics, and the archaeological record, all of which confirm his position is factually wrong. Sadly, he has based his position upon the foundation of Jewish declarations that they are who they say they are. He then goes on to falsely state, there exists no position to claim they are not who they claim to be. And he does so while declaring all of the other evidence doesn't exist or is irrelevant. I don't know who this guy is, but he's certainly not a good source of information on the topic.