Various links

Fascinating links via Tyler Cowan.

1. The power of arbitrage. 
2.  More on bootleggers and baptists. Politics without the romance.

1. Bob Gordon on slow growth.
2. And from Chris Dillon, girls at science
3. Raj chatty on public economics. Fantastic series of lectures http://obs.rc.fas.harvard.edu/chetty/public_lecs.html