Everyone once in a while I run across the opinion that non-Euclidean presents a serious problem for Kantian epistemology. While I've rebutted this notion before, it's common enough that I thought I'd have another go at explaining why it's a misconception. For Kant we can't know the universe to be spatial "in itself" (as in "things-in-themselves"), Euclidean or Non-Euclidean  Continue Reading …