abortion AIDS algorithm allergies babysitting banerjee battlestar galactica big ideas bruce bartlett complexity conditional convergence context externalities creation drugs education externalities fact free learning first post freakonomics free trade free trade agreement fta global warming gregor samsa health care heuristics human capital immigration in the long run we are all dead instrumental variables instruments keynesianism krugman labor supply levitt malaria mcsweeneys methodology money supply moores law neoliberalism neuroeconomics new keynesian new methods new york city newbies np offshoring outsourcing patents paul krugman persuasion pharma pharmaceuticals pop eleches poverty race real business cycle recessions regression second avenue subway single payer soak the rich social security social security reform south korea subway supply side economics tariffs television thailand trade trade creation trade diversion universal health care voice over ip voip world bank