Are there any sort of essays or generally accepted criteria for accepting one theory over another? I ask, becuase for most any theory, it seems that you can find evidence for it. If you did your research, you could come up with tons of evidence for a totally wrong theory (like all the evidence that existed for the geocentric model of the solar system). It seems to me, that the only scientific mechanism for accepting a theory as valid would be to compare and contrast it with as many alternate theories as possible. Test all the theories against each other, and see which is the most consistant. I mean, that makes sense to me, but that's just what I think. Is there any sort of literature backing my assumptions?