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From: Moebius <invalid@example.invalid>
Newsgroups: sci.math
Subject: Re: The reality of sets, on a scale of 1 to 10 [Was: The
 non-existence of "dark numbers"]
Date: Sat, 22 Mar 2025 15:58:51 +0100
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Am 22.03.2025 um 15:44 schrieb Moebius:
> Am 22.03.2025 um 15:04 schrieb Alan Mackenzie:
>> WM <wolfgang.mueckenheim@tha.de> wrote:
> 
>>> It leaves the cardinality unchanged because this notion is tantamount
>>> to potential infinity.
>>
>> You're stuck in the 1880s.
> 
> Nope. Actually, his claim ist absurd nonsense. Es handelt sich bei WM um 
> einen aufmerksamkeitsheischenden, geisteskranker Spinner.

Hint: (a) Sets have /cardinality/. (b) There are no "potentially 
infinity" sets. Either a set is infinite or not (i.e. finite).