There's also the massive decline in the growth of economic productivity since the 1950s, as documented by people such as Robert Gordon https://www.amazon.com/Rise-Fall-American-Growth-Princeton-ebook/dp/B071W7JCKW/ref=sr_1_1?ie=UTF8&qid=1542218574&sr=8-1&keywords=robert+gordon+rise+and+fall+of+american+growth … and @tylercowen https://www.amazon.com/Great-Stagnation-Low-Hanging-Eventually-eSpecial-ebook/dp/B004H0M8QS/ref=sr_1_7?ie=UTF8&qid=1542218607&sr=8-7&keywords=tyler+cowen …pic.twitter.com/1ECYsSIQwv