One trend I see is towards more specialization i.e,. less big blocks as you go to the right. It's neat to see how farming has gone from a major percentage of w

One trend I see is towards more specialization i.e,. less big blocks as you go to the right. It's neat to see how farming has gone from a major percentage of workers to almost nothing. I kept hoping to see some big block of jobs in our time that could go away in the next 100 years. But nothing jumped out at me.