prior to that, jobs in factories and skilled labor were overtaken by improved technology. technology is not the same thing as AI. there's a difference in creating a car are much more cost-effective rates vs. firing all of your mcdonalds employees.
This is from my limited understanding of the situation:
Three decades ago, most of the American population was employed in jobs which required a lot of manual labor, such as coal mining and construction. But with the advancement of technology, the scope for such jobs have declined. Now most of the the population is employed in supermarkets (the biggest single provider of jobs in the US, if I am correct) and other service sector jobs. Requires less manual labor, is safer, and at the same time the average salaries are much higher.
yes, and that's why i said ai + technology would undo the middle class. the thing is, you said most of the labor pool was in the manufacturing/coal mining.. and that's true. what it did was shift from manufacture jobs to the service industry.
what i'm saying is that ai technology will remove the jobs required from the service industry, as it previously did with manufacturing. well then, where do people concentrate on jobs when the services field is overrun by robots?