Actually, I need to modify my last post. A disbelief in yes is not the same thing as an acknowledgment of a lack of knowledge either way, so that would not be agnosticism. A disbelief in yes is a rejection of yes, and agnostics don't have any beliefs about yes one way or the other. They understand that they simply have no way of knowing on way or the other. Anyone who thinks they do know one way or the other in the absence of proof is practicing belief.