Many happy returns

摘要

DATA-GATHERING is the least sexy part of economics, which is saying something. Yet it is also among the most important. The discipline is rife with elaborate theories built on assumptions that turned out to be false once someone took the time to pull together the relevant data. Accordingly, one of the most valuable papers produced in 2017 is an epic example of data-retrieval: a piece of research that spells out the rates of return on important asset classes, for 16 advanced economies, from 1870 to 2015. It is fascinating work, a rich seam for other economists to mine, and a source of insight into some of today's great economic debates.