On a cold English autumn evening recently, we three found ourselves together in the bar of our business school, Cranfield School of Management, along with some clients. Emma, an Australian by upbringing, did something entirely unexpected: she ordered the quintessential summer drink of Wimbledon, a Pimm’s. She didn’t say this was a good idea, or praise Cranfield’s Pimm’s, she just ordered it. Most of the group instantly followed her.