"Fifty years ago, blue-collar workers at General Motors often made more than college professors. People with short attention spans sometimes act like this period was 'normal', ignoring 10,000 years of human history. They seem to suggest that our most pressing problem is that young men who don’t study in school and just shoot rubber bands across classroom should be able to earn an income that (in relative terms) was never possible in any period of world history before the 1950s and has never been possible in any period of world history after the 1970s."