Assorted links by Tyler Cowen December 9, 2014 at 2:08 pm 1. Nouriel Roubini on the new machine age. 2. Do high heels influence how men behave? 3. Amazon introduces Dutch-style auctions. 4. Steve Albini defends today’s world of music. 5. An app for valet parking service. 6. Jonathan Gruber’s opening statement (pdf). 7. Russia’s richest man bought Watson’s Nobel medal and now will return it to him.