Assorted links by Tyler Cowen March 14, 2014 at 12:47 pm 1. Why does Pi appear in Einstein’s theory? 2. The 182-year-old tortoise. Still active. 3. A new class on Buddhist economics. 4. How many years of austerity will be needed? 5. Why are audiences more open to new choral music? 6. Speculative claims about Siberian megaliths.