Assorted links by Tyler Cowen December 23, 2011 at 7:31 am 1. Via Chris F. Masse, The Great Narcissism. 2. A tale of holiday charity. 3. RSS feed for the Bloomberg economic history blog, Twitter feed here. 4. Why Medicare is expensive, in one chart. 5. Interview with Magnus Carlsen. 6. David Brooks’s Sidney Awards, part I and part II.