When did we find God?

I should start this long post by stating that I am not trying to convert anyone. This is one of what will likely be many more diatribes exploring my own religious views. I am an atheist. I am, however, extremely interested in different religious beliefs, organization, etc.
I was sitting at a Willy Porter concert a week ago. During the concert a thought occurred to me, that I hope to explore.
Douglas Adams has a fantastically written article on the decreasing need for religion. He talks of the four ages of sand.

1. sand -> glass -> lenses -> telescopes
2. sand -> glass -> lenses -> microscopes
3. sand -> silicon -> microchips
4. sand -> glass -> fiber optics -> communications