A "sardonic" tweet by a "Duke sociologist"* about this year's Nobels in economics generates an op-ed response in the New York Times by a MacArthur ('genius') fellow and Harvard economist, Raj Chetty. [HT Matt Zwolinski] It's been a few decades since an elite economist felt the need to notice a sociologist. Chetty reveals what is at stake:
the headline-grabbing differences between the findings of these Nobel laureates are less significant than the profound agreement in their scientific approach to economic questions, which is characterized by formulating and testing precise hypotheses. I’m troubled by the sense among skeptics that disagreements about the answers to certain questions suggest that economics is a confused discipline, a fake science whose findings cannot be a useful basis for making policy decisions.
If economics is not "a useful basis for making policy decisions," its seventy year, lucrative (jobs, funding, prestige, etc.) reign as the the privileged discipline in the policy sciences ends. (The only time I have discussed Chetty's views on the blog, I provided historical context for that claim.) Before I turn to Chetty's argument for why economics is "useful" in the relevant fashion, it is worth noting that he accepts the idea that consensus in methods ("formulating and testing precise hypotheses") and answers ("simple, unassailable finding") is an adequate proxy to a discipline not being a "fake science." Such consensus, need not prevent it being "ideology," too.