"Akerlof and Shiller write as if we need milk and eggs but are then broken down by the supermarket’s obstacle course of temptation so that we exit the store in a dazed and dejected fugue loaded with baskets of stuff that we don’t really know why we bought. Maybe that is what a trip to the supermarket is like for them. But for me a trip to Trader Joe’s that doesn’t result in an unexpected purchase is a disappointment"