You’re running off the assumption that the survivors know useful information and that theyre also able to utilize that useful information plus be able to source needed materials since they wont have travel

I think we’re assuming books will continue to exist.

I think one of the real marvels of civilization is the redundancy of information. For every college course you’ve taken there’s a text book, and there may have been dozens of physical copies of that book used in your class, but also for many other classes at other schools that taught that same subject. There may have been 10,000 copies of that book in circulation across the globe, in many different countries.

It’s not impossible to lose information forever, but we’ve put in some really strong defenses against that really happening. There are a lot of libraries in coastal areas which could flood, or big cities that could burn after wars or riots. But there are also plenty of libraries in small towns, and at high elevations. Correct me if I’m wrong, but I believe Aspen has a public library for instance, and so do some of the small towns nearby that you don’t know the name of.