I have often banged on about "MOOP" - massive open online psychology. The idea is a form of behavioural epidemiology - we can watch through smartphones and other devices people at enormous scale - and answer questions like "do people who save 10% of their income in index linked isas have less stress / better life outcomes" or "do people who meet a mate for a drink each week live longer" ...
The answers may well surprise us, but at some point the answers will also benefit us.
The answers may well surprise us, but at some point the answers will also benefit us.