Wednesday assorted links by Tyler Cowen August 21, 2019 at 12:09 pm 1. Poland’s baby bump. 2. Science fiction shorts by Nigerian teens. 3. Why is Joe Rogan so popular? 4. How much have Republicans shaped state policy? (NYT, ignore the bad headline) 5. New YCombinator Demo Day companies. 6. “Del Giudice wonders if parasite-host arms races created pressure for increased human variability.“