Assorted links by Tyler Cowen May 11, 2013 at 1:47 pm 1. The essence of the Roman empire. 2. Some charming side streets (Genoa could be added to the list). 3. The supply elasticity of Bitcoin, and macroeconomic bras, from Japan. 4. Ayn Rand on C.S. Lewis. 5. “In “Upstream Color,” the hero is a parasitic worm.” 6. Italian-language interview with me, on Europe and Italy.