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Re:Ask HN: What is a science fact that blew your mind when y... by macando on Saturday August 22, 2020 @04:21AM (#24242622)
Creating something out of nothing: The Banach - Tarski Paradox

https://youtu.be/s86-Z-CbaHA

Re:Ask HN: What is a science fact that blew your mind when y... by Caylio on Sunday August 23, 2020 @07:24PM (#24256162)
That's a consequence of the axiom of choice, which has historically been a highly controversial axiom.