One thing not mentioned is that productivity increases in one area free up some of those people to do entirely new jobs that did not previously exist, just because society couldn't afford to allocate people to those jobs.
Not many doctors and dentists and so forth 1000 years ago, because the agricultural base couldn't support it. It took 95% of people being farmers to produce enough food for themselves and the remaining 5% of the others. Now 5% of people can produce enough food for the other 95%, which allows them to be doctors and programmers and whatnot.
Not many doctors and dentists and so forth 1000 years ago, because the agricultural base couldn't support it. It took 95% of people being farmers to produce enough food for themselves and the remaining 5% of the others. Now 5% of people can produce enough food for the other 95%, which allows them to be doctors and programmers and whatnot.