By Byron McNutt

WE ALL KNOW?millions of good, middle-class jobs have disappeared in the U.S. economy the last 15 years. We can blame innovation, technology, robots, smartphones, computers, outsourcing, company mergers and the resulting bad economy.

Author and former hedge-fund manager Andy Kessler says it is wrong to blame innovation for the loss of jobs. Tell that to the 15 million Americans who are unemployed and the 20 million who feel they are underemployed.