content: Robots in conjunction with people could allow 1 or 2 teachers to look after a much larger group of children. So while not all the teachers at a given location get replaced, the robots expand the productivity of those the few that remain. For adult teaching, technology (not robots per se) is already replacing people. I have in the past frequently done various miscellanious courses through the local university (college) or adult learning centre. However, over the last few years I have swapped across fully to online courses. When you can find a course taught by one of the top people in a given subject, and study at your own pace, it becomes a very easy way to learn.