Hurf, seriously, use spoilers mate!!!
Jason2, you do have to see where Hurf's coming from, you've ignored quite a few difficult questions in this thread, it really is exasperating!
As for being mentally ill, that's just a stupid point. He has every right to believe what he believes. His theory that there's a God and there's Satan is all well and good, I have no problems with it. What I do have problems with is when he says it as a fact.
Yes, mavity is something we don't know the nature of, and it is a theory (a pretty damn convincing, pretty much proven one!), however, as someone posted earlier, with science, we form theories and we then look for facts to back up our theories. If we find something contradicting, we may have to throw those theories out of the window and start again. This is something that religion doesn't really tend to do.
I'll believe in stuff when I see convincing evidence for it. Some people see our lives themselves as reasonable evidence that there's a God in the same way I see myself being brought back down to Earth when I jump as evidence for mavity. Please religious people,. please don't portray things in the bible as fact, that's when we start all these silly arguments and get the handbags out :/