Is the Darwinistic Selection Principle False?

Arminius is right. Intelligence is a characteristic of fitness. So the intelligent people should have more children than the stupid ones. The reality of modernity shows the tendency that this ratio becomes reversed, so that relatively soon the stupid have more offspring than the intelligent.

The reasons in this counter-natural development for the reversal are economic and therefore cultural reasons.

Arminius is also right in what he says about the elimination of the natural environment by humans, because humans have - again in modern times - built technical containers in which they can live without a natural environment.

Source.

Humans can live without a natural environment, because the humans’ artificial environment can replace the natural one.