I take the train to work. Most days, there is a man playing the saxophone near the staircase at the depot. He always displays some sort of message to the passerbys, usually of a religious or philosophical bent, and not always profound. Today’s message struck me as particularly dumb: For every question, personal experience is the final test of truth.”

Really? I wanted to ask him if he had ever been to Naples. I would expect a negative answer, at which time I would respond, “So I assume you don’t believe Naples exists, then, right?” If personal experience is the final test for truth, and we have not experienced it, then it cannot be true. In my own life, a whole host of things cannot be true: murder, wealth, and the like. Very dumb. And yet, empiricism is how many people go about determining truth.