Most of peoples work these days is pretty specialized, it’s that division-of-labor thing.
Your average man (or woman) from the 1800’s would have a much wider variety of useful skills and knowledge than 98% of the population today.
When I hear people implying that if there was some kind of large scale economic collapse, then we’ll just go back to the 1800’s, I can’t help but chuckle.
We won’t go back to the 1800’s, we’ll be lucky if we go back to the 8’s!!!