So getting back to the God question, we cannot talk about a single, universal probability that God exists. Hence, rather than a single God probability, it is more reasonable to consider the probability that each possible god G exists (using whatever definitions for G we care to analyze). This information can be encapsulated by a function P. For each event G exists , representing the existence of god G, P(G exists ) gives the probability of that event (i.e. The more conditions we tack onto our definition of a god G, the less likely it will necessarily be that the god G exists. “god is a force” or “god is that which is good”), and then assign P(G exists |E)=1 for this vague god and P(G exists |E)=0 to, well, whatever is not covered by this definition.