IMO The reason fewer and fewer people are employed in middle-class manufacturing jobs is because of innovation. The automation (innovation) in today's machinery

IMO The reason fewer and fewer people are employed in middle-class manufacturing jobs is because of innovation. The automation (innovation) in today's machinery means that manufacturers mostly need people with little technical knowledge to push buttons and grab parts for $10 an hour. They don't need as many technical machinists and machine operators who got middle class salaries. Some of these middle-class jobs are overseas but for the most part they are just gone.