What's the probability that my short-term memory is correct and that I agreed yesterday to meet with someone today? Pretty high actually, really high, extremely high, or perhaps even close to being virtually certain. I live my life based on short term memories. If I doubt them and fail to make that appointment, or any agreed upon appointment, I would fail through life in a haphazard dream world of random choices. I would be an unreliable person. Life demands that I trust my short term memories and that I am not now dreaming of thinking I made an appointment I didn't make. Faith has nothing to do with this reasoning process. Probabilities here are all that matter. Faith is superfluous, utterly irrelevant, completely unnecessary, and even irrational. We should think exclusively in terms of probabilities.