[quote=@Host]
<Snipped quote by whizzball1>

That's actually an intelligent argument against the multiverse theory. I've heard it before. 
[/quote]

Against the multiverse theory, yes--but the person was trying to use it to prove God to a group of people that did not believe in the multiverse theory, one reason for which was the hole presented by that very argument. But one of the big things that was revealed to be wrong with it was that the person was speaking about a thought experiment, where you imagine that something may be true. He said that if God is possible, he must exist in a thought experiment (but he refers to it as a possible world, which muddles the true meaning), and so he must exist in all possible worlds, and so he must exist in our world. This is very clearly flawed.