Assorted links by Tyler Cowen April 23, 2015 at 12:06 pm 1. Is America a mobility laggard? 2. Rogoff on debt supercycles vs. secular stagnation. 3. Can software reduce on-line procrastination? 4. Can Greece default and stay inside the eurozone? 5. Paying to get inside the restaurant, by Tim Harford. 6. The Turing test Olympics. 7. M.H. Abrams has passed away at 102. 8. The new Arizona State online initiative.