Assorted links

1. Against coal-based explanations of the Industrial Revolution.

2. Should a leader look intelligent or healthy?

3. Weyl and Posner on combining freer immigration with a tighter caste system.

4. The lower bound didn’t really matter until mid-2011 (an impressive and I would say definitive study).

5. The archaeology of late capitalism (Atari games on eBay).

6. Can deceptive behavior promote cooperation?