Many philosophers seem to believe that belief is involuntary. But if this were the case, wouldn't it be true that every human being, when presented with the right information, would automatically assume a certain belief? So when person A and person B are presented with information Y, the will always comes to believe X. Just as in other involuntary acts of the human body. If person A and person B are both given a chemical depressant, let's say a tranquilizer, they will always fall asleep. They have no control over it, it is just an involuntary chemical reaction in the body. It does not seem to me that belief works with this same type of involuntary, automatic, mechanistic quality. For example, we could take a sample of 100 Americans and show them all the evidence in support of Darwin's evolutionary process. About half would afterwards support evolution, and half afterwards would say it is phoey. Although I have not seen the results of such a study, I think it is safe to assume that this would be the outcome. Same information given to persons 1-100, with some having belief X and some having belief Y.