Monday assorted links by Tyler Cowen April 19, 2021 at 12:00 pm 1. The broader potential of mRNA vaccines. 2. The NFT craze is helping Nigerian artists. 3. What triggers stock market jumps? 4. How the book trade is changing (NYT). 5. How good are bad NBA players? (NYT) 6. Which are the most interesting critiques of your work?