Well yes, that's just it, isn't it? Those threatened by the truth of Jesus want to re-set the game by dismissing the evidence that's already withstood 2K years' examination with a sort of post-modernistic, "Yeah, but aside from the data, what proof do you have?" Like, "Okay, leaving aside the twenty-seven unimpeachable alibi witnesses, does the defense have any proof of innocence?"
Dan