In the excitement of a looming opportunity, decision makers are infamous for concentrating on what a strategy could do for them if it succeeded and not enough, or at all, on what it could do to them if it failed. To combat this potentially ruinous overoptimism, time needs to be devoted, systematically, to addressing a pair of questions that often don’t arise by themselves: “What future events could make this plan go wrong?” and “What would happen to us if it did go wrong?”
