Wikenigma is an encyclopedia of known unknowns. That is, a listing of “scientific and academic questions to which no-one, anywhere, has yet been able to provide a definitive answer”.
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Comments 1
I once had an astronomy professor who made us keep a list on the back page of our notebook - every so often in class he would tell us about something they didn’t currently know the answer to, but they expected to figure out in the next few years. It was a great idea. I remember the anisotropic behavior of the cosmic background being one of them.
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