Reppert's XYZ Question
Victor Reppert presents a challenge to everyone concerning the question of what constitutes evidence. He states it this way:
It goes like this. X is evidence for Y just in case Z.Presumably, he wants people to provide some substitution for Z such that it makes a reasonable definition of 'evidence'. Now this is a topic that he has written about before in his article Victor Reppert on the No Evidence Charge. His own answer is "X is evidence for Y just in case X is more likely to exist given Y than given not-Y." This may sound reasonable on its face, but it leads people down the wrong path before they ever have a chance to address the question of "What is evidence?"
I've answered the question here at various times, and people are dissatisfied with my answer. Fine. I want to know your XYZ answer. If you are going to tell me I don't have any evidence, then apparently you have a different answer to the XYZ question than I do. But when I ask people what their answer is, I never find out.