If god exists, only programmers can really understand how he works.
In the beginning there was nothing.
Then he started running his program, and space and time started to emerge.
If it would be possible to build a big enough computer, we could run a simulation of the universe that would be exactly the same.
If this simulated would would contain life, would this be real or simulated life?
The creatures living in the simulation would certainly think their world is the only real world, and they could never imagine their god, the proghrammer.
The world and the simulation are essentially the same.
This theory has now been discussed on wired news.
Thanks Nikos for pointing me to this.