" A pre-mortem typically starts with the leader asking everyone in the team to imagine that the project has gone horribly wrong and to write down the reasons why on a piece of paper. He or she then asks everyone to read a single reason from the list, starting with the project manager, before going around the table again. Klein cites examples where issues have surfaced that would otherwise have remained buried. ‘In a session held at one Fortune 50-size company, an executive suggested that a billion-dollar environmental sustainability project had “failed” because interest waned when the CEO retired,’ he writes. ‘Another pinned the failure on a dilution of the business case after a government agency revised its policies.’15 The purpose of the pre-mortem is not to kill off plans, but to strengthen them. It is also very easy to conduct. ‘My guess is that, in general, doing a pre-mortem on a plan that is about to be adopted won’t cause it to be abandoned,’ Kahneman has said. ‘But it will probably be tweaked in ways that everybody will recognize as beneficial. So the pre-mortem is a low-cost, high-pay-off kind of thing. "

― Matthew Syed , Black Box Thinking: Why Some People Never Learn from Their Mistakes - But Some Do