Why is D unpopular?

[Dukc]

On Wednesday, 3 November 2021 at 13:10:21 UTC, Ola Fosheim 
Grøstad wrote:
>
> I am not assuming, I am presenting a viewpoint with arguments. 
> Also don't assume that research is about conveying truth. It is 
> about providing perspectives, models and ideally a transparent 
> exposition.

But how to evaluate the viewpoint with arguments, or the 
research, that's the problem. It is possible that I didn't 
pinpoint the problem with most forum theories about language 
popularity accurately, so I think I should present an [example of 
what I do find 
convincing](https://astralcodexten.substack.com/p/please-dont-give-up-on-having-kids). It's not about language adoption, but nonetheless about a complex subject where you can't rebut bad arguments with simple self-made examples. If you can provide that level of argumentation for your favorite language adoption theory, then it's time to take it seriously IMO.