Studying the brain for a reaction to stimuli in no way proves whether or not those stimuli are from an external source or from something going on in the brain itself, therefore a waste of time in this debate.

And since there is no way to verify those "facts" the belief that they are facts depends solely on faith, which I think is MrKim's point. My biggest reason for believing in an intelligent designer is that, though I believe in evolution as shown through natural selection, I can't totally believe that something as complex as human beings could have evolved completely without some sort of intervention somewhere along the line - though I could be wrong.