Who'll make the machines that automate? If there are a million people sitting on their haunches with nothing to do, don't you think some of them will find somet

Who'll make the machines that automate? If there are a million people sitting on their haunches with nothing to do, don't you think some of them will find something constructive to build and employ the rest? The industrial revolution massively automated practically all aspects of life. I didn't see a world wide job scarcity throughout the 20th century.