Assorted links

1. The economics of Spanish football clubs.

2. William Thurston, On Proof and Progress in Mathematics, and his obituary is here.  He seems to have been a special thinker.

3. “Studies in pre-commitmentphobia,” best article title I’ve seen in a long time.

4. New statistics for predicting (U.S.) football outcomes.

5. Speculative claims about the possible abduction of Boris Spassky.

6. The psychological dispositions of self-identified libertarians (a research paper).