Consider the following: Postulate as FEW as possible things that seem to be necessary to make (intelligent) life possible, e.g. causality (one should be able to kill one's dad) at least at "large" scales,...?... Let there be mathematical logic and demand that all laws of nature can be written in a mathematical language and further demand that no mathematical contradictions MUST arise in these laws. Do you think that it is possible to get a universe as ours just out of this? That means e.g., it turns out that one has to have just one time dimension and let's say exactly 3 space dimensions (maybe this could have something to do with quaternions, for example; I don't claim that!!!) or that there have to be exactly 3 lepton generations as we currently observe or ... If you think it is a possible way, where would then God be?