Re: Simple enough for every reader?

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.