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lostmsuyesterday at 1:48 PM1 replyview on HN

Maybe? Can you prove there's no limit? The default proof by induction requires postulate of infinity. (this statement is potentially incorrect, but takes across the point)


Replies

alex_youngyesterday at 5:53 PM

Does half of something have a limit? Not by its definition. Same thing with addition or multiplication. All of these only work with some concept of infinity.

We could redefine "half" to mean "half of whatever you're talking about until you get to some arbitrary limit", but doing that to all of arithmetic is going to wind up in a very odd place.