Not my opinion, but that book has an optimistic outlook on humanity. Lots of doomers/conspiratards have made this guy into a more sophisticated Soros figure who controls the world through influencing leaders at Davos. That tickled my curiosity into reading his work, lol, ironically I mostly agree with him albeit less optimistic than he is. Learned a bit here and there from his work, although a lot I already knew.
I'm a proponent that a second dark ages/Middle Ages 2.0 is coming where people from the 2100s/2200s/2300s look back at the 1850-2050s as a Classical Era in awe.
This Covd crisis ain't nothing. However, it shows that whatever advancements in medicine man makes, nature can throw us a curve ball.
Nature is only one variable though.
Secondly, most people have lost the ability to subsist from nature. That is a big fu.ck up in my opinion. I advise any young brother to acquire self-sufficiency skills. For instance, how are you going to attend to your most basic need, food, if shit hits the fan? Investing in prime agricultural land should be a priority, along with animal husbandry skills etc.
That being said, all the skills, land and precious metals you horde in the World will not save you from a hungry mob when you are a minority. Eff it, I am being too cynical, might not happen in my lifetime, take everyday as it comes freund. We all gotta die someday!