A few weeks ago Bill Maher was on the Daily Show pitching his film Religulous. Jon Steward took him to be an atheist to which he responded (with some paraphrasing), "I'm not an atheist. I don't like atheism. It's the mirror image of the certitude of religion." To an extremely skeptical agnostic like myself this seemed quite reasonable. Is there enough empirical evidence for atheism? I don't for a minute equate the "certitude" of atheism with that of the currently accepted religions but can't help thinking that atheists are a little too smug given the current state of scientific knowledge. Am I missing something? Do we know enough about the past, current, future state of the universe (amongst other things?) to absolutely exclude the possibility of some form of deity?