Mathematical Platonism is one of those things I changed my mind about over time. And, of course, I may change it again. I began with curiosity and at least partial assent, convinced that mathematics is, indeed, uncannily weird. Too weird for there not to be some substance to the idea that mathematical truths are not invented by mathematicians, but rather “discovered,” in a way analogous to how astronomers discover planets (though, obviously, not literally: no telescope will ever show you the Pythagorean theorem…).
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