If Kant really proved space is flat (which, strangely enough, matches our latest observations), then space must be flat and we can toss out all observations to the contrary. Who are you going to believe, infallible logic or your lying eyes? I seriously doubt Kant actually managed to prove something as fact-dependent as space being flat though.
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Congratulations to SuperNiceDog, Guru Winner, who was smart enough to pick
your 7 time champion, Link.