Assorted links by Tyler Cowen April 20, 2013 at 1:39 pm 1. The gourmet revolution in Ghana. 2. Summers on gridlock, Ornstein and Mann criticize him, Summers responds. 3. An update on competency-based degrees. 4. Music for hospitals (Eno). 5. Why did Korea’s biggest TV broadcaster ban the new Psy video? 6. Good take on the legacy of Colin Davis, positive but critical also.