A lot of religious belief - even the majority - involves making factual claims about the world which do come into conflict with science and history. For Christians, a test of this is the Empty Tomb. I ask Christians: 'are you saying that it does not matter - as a matter of fact - whether or not Christ's tomb was empty and that he was resurrected?' At that point, I find that, to a lot of them, it really does matter, despite all the fine talk about not wanting to confuse science and history with religion.