The argument for God’s existence from contingency and necessity is not very long, so there aren’t many ways to attack it. Mostly they consist of holding that reason doesn’t actually work. However, one of the more reasonable approaches is to question whether anything is contingent. The traditional approach looks at whether something exists at all points in time, but since time is so mysterious this can be questioned simply because anything regarding time can be, despite our direct perception of time. But we also dichotomy perceive our free will, and yet determinists exist, too. Perhaps a way of helping such people is to look at space rather than time. If a thing does not exist at all points in space simultaneously, it is clearly not necessary since there are places where it is not anything at all – the places where it isn’t. If a thing exists in one place and not another, it’s existence in the one place and not another must be contingent on something other than itself. If that thing is not necessary, then it must be contingent on something else. There cannot be an infinite chain that doesn’t terminate in something necessary, or else there would be nothing at all since no contingency would be fulfilled. That necessary thing all (reasonable) men call God.