Wednesday assorted links by Tyler Cowen March 6, 2019 at 11:56 am 1. Pi Day for economists video by Craig Palsson. 2. Do singing mice converse? (NYT) 3. Why crime fell in Oakland. 4. Will Smith not good enough for the role? 5. A Glass-Steagall law for tech companies? 6. “We find evidence supporting our hypothesis that the collaboration effect operates by creating a sense of debt owed to one’s collaborator.“