In the last 25 years we have improved industrial processes to a point that only a handful of people on the planet hold the knowledge on how to recreate our modern civilization. Machines making machines. It's a chicken before the egg kind of thing.

I will be taking a blacksmithing course this spring, and I encourage everyone to try and pick up, and maybe even master, these "old" skills to pass down to the next generation. Even today putting together your own electronic circuit is becoming more difficult.