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I'd argue that many other discoveries are the same: the intellectual or technological prerequisites have to be matched by a philosophy of science. Newton studied orbits and witchcraft with equal enthusiasm, and I bet his predecessors spent even more time on mystical dead ends.
I think another aspect of that is nobody who figures something new out goes back and says, "Yeah, we were fucking stupid for not seeing this." It's almost like some kind of professional courtesy keeps science and math from admitting they'd been fucking up this whole time.
