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?
Figure out how to grow food in the current climate, feed and shelter those I can, try to keep the free internet working so we can help each other out.
I can see it now.
“The internet’s out. Which one of you passed CompTIA’s Network+ exam?”