It is all too understandable that scientists don’t want to think philosophically about what their research tells us. But they can’t avoid it. And because they can’t avoid it, but too often don’t think about it, they impose a default, naïve form of materialism on anyone who will listen. It seems to be assumed that, just because someone is a good astrophysicist or evolutionary biologist, that fact in itself qualifies him or her to lay down the law on subjects such as the existence or otherwise of a God.