In 1800, 83% of American jobs were in agriculture. Now it is 2%, not because people eat less per capita but because of increased technology. We have invented a lot of stuff for those people who would have been farmers to do: advertising, lawyering, flipping burgers, programming, etc
Many of the jobs we invented are crank-turning jobs (like most ag jobs were previously). The process of creative destruction is that the most crank-turning of them will be automated and we will invent new and innovative cranks to turn! For example: full time Twitch broadcaster. We are very good at making up new work for people.