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Re:How can some infinities be bigger than others? by usrusr on Wednesday April 19, 2023 @07:16PM (#35634495)
You can even give in a little more without accepting the blatant takeover of "bigger": accept that there are different qualities in infinite comparisons. A difference in cardinality can certainly be considered a stronger difference than everything mappable, but denying infinites like "number of points on an infinite line" it's smaller-than relative to "number of points on two infinite lines" is just ridiculous. It's snobbish, pure vanity.
Re:How can some infinities be bigger than others? by kccqzy on Wednesday April 19, 2023 @07:18PM (#35634514)
My point is that intuitive but imprecise naming misleads people. There's no way to talk about "number of points on an infinite line" because there isn't a specific natural number that you can find to denote the number of points here. Infinity is not a number.

That's why we need a proper concept of cardinality.