Some years ago, working in the strategy team for a global bank in the aftermath of the financial crisis, I attended an offsite for the top hundred leaders, convened to align on strategy, set priorities and rebuild some sense of shared direction after a bruising period. The Chief Risk Officer ran a session built around a technique I hadn't come across before: a pre-mortem. He split the room into groups and asked each to imagine that the bank had failed within five years, then work backwards to identify what had killed it.
Given where the business had just come from, the exercise was laden with a heavy irony that wasn't lost on the room. But it was also one of the most valuable ninety minutes I've sat through in a strategy career - it gave people who had endured and just about survived a long period of intense retrospection and examination the chance to practise foresight instead. And I have no doubt that it improved the resilience of that business.
It's a technique I've returned to many times since. And it's hard not to reflect, even now, that a bank which had run that exercise a few years earlier might have had a rather different crisis to manage.