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From: "Chris M. Thomasson" <chris.m.thomasson.1@gmail.com>
Newsgroups: sci.math
Subject: Re: Simple enough for every reader?
Date: Sat, 17 May 2025 11:44:58 -0700
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On 5/17/2025 10:35 AM, WM wrote:
> On 17.05.2025 19:20, Alan Mackenzie wrote:
>> WM <wolfgang.mueckenheim@tha.de> wrote:
>>> Are you aware of the fact that in
>>
>>> {1}
>>> {1, 2}
>>> {1, 2, 3}
>>> ...
>>> {1, 2, 3, ..., n}
>>> ...
>>
>>> up to every n infinitely many natural numbers of the whole set
>>
>>> {1, 2, 3, ...}
>>
>>> are missing? Infinitely many of them will never be mentioned
>>> individually. They are dark.
>>
>> <Yawn>
> 
> Exciting. Many readers claim(ed) that all natural numbers could be used 
> as individuals. Further this would be a precondition for countability of 
> infinite sets.

Show me a dark natural number?