I clarify:
Let’s say scientists can’t come up with solutions to global problems, AI gets out of control and turns almost everyone into paperclips during wars, and in the 2040s or 2050s, the surviving people (about a few tens of millions around the world or even less) gradually return to the level of intelligence of their distant ancestors?
I take unbridge with the line
All evidence so far points to humans being at the same intelligence levels as they are now since basically when we first became Anatomically Modern Humans.
We were not less intelligent, we just had less information and less data.
You can be a Supergenius the likes of which only seen in comic books, but if you don’t have the right data and information, you’re no different to anyone else.
As you have well noticed, I did not take into account that human evolution did not advance much intellectually and computationally, it was rather a matter of the variety of information that sharpened the human mind, to put it simply. Unfortunately, it is difficult to take all this into account.