The psychologist Gary Klein has developed a variation on this technique. He calls it a “premortem.” As the name suggests, the approach is a twist on the medical procedure of post-mortem analysis. In a post-mortem, the subject is dead, and the coroner’s job is to figure out the cause of death. In a premortem, the sequence is reversed: “Our exercise,” Dr. Klein explains, “is to ask planners to imagine that it is months into the future and that their plan has been carried out. And it has failed. That is all they know; they have to explain why they think it failed.”