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I don't have a good answer to that question, I'm not sure anyone does. But if society collapses, much of that knowledge goes with it. Our society is incredibly

I don't have a good answer to that question, I'm not sure anyone does. But if society collapses, much of that knowledge goes with it. Our society is incredibly complex and fragile, with a very high degree of specialization. That makes us vulnerable to these kinds of issues. While the "dark ages" were hardly dark and ignorant, the collapse of the Roman empire meant advanced road building and concrete were lost for 1500 years. So there is some historical precedent here.

noir_lord 7y ago
500 years would put us back to 1500ish, I can’t see that, steam technology and electric motors/turbines are simply doable (and where done) with not much technology to boot strap from, hand tools made machines which made specialised machines which repeated for generations but the first step comes back to steam and electrification. It’s not like every book in every library would or could disappear.