Thursday assorted links by Tyler Cowen February 11, 2016 at 12:25 pm in 1. Princeton Bitcoin textbook is freely available. 2. What became of Michael Jackson’s chimpanzee, Bubbles? And speaking of the 1980s, Pee Wee’s Big Comeback (NYT). 3. “The black-white income gap was cut by about a third between 1992 and 2000…” Link here. 4. Someone is building a fence. 5. A short introduction to gravitational waves. 6. Harvard faculty support Clinton over Sanders, overwhelmingly.