How does one know one is not dreaming? How could one logically demonstrate to a skepticsomeone skeptical that one is "really" there, and awake, and not just dreaming about the entire situation/worldworld around himthem?
What I'm asking is: which if anyWhich philosophers or philosophies have addressed this problem of how one knows one is, or is not, dreaming?
Which if any philosophies have attempted to evaluate the sense of claims like "I am not dreaming"?