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About that you may be correct but in the burbs is where the technically self sufficient live. Oftentimes, genius in all sorts of fields.

The next group is independent farmers and ranchers. Sometimes the big cities have areas with the same sorts of persons but it usually depends on SES or socioeconomic status.

Oftentimes, there are large numbers of soldiers who, especially if they are combat, medical, or even support can do almost anything required.

I've had to change an engine and two transmission on M-588A's. And SPLL's

I mean think people are more resilient than presented.

People do not necessarily have to be educated highly to succeed at things very technical in order to succeed at
them as adults.