Strategic Scenario Planning

Forecasting tries to predict a single most-likely future, usually by extrapolating trends and attaching probabilities. Scenario planning, as Wack and Schoemaker describe it, deliberately refuses to do that; it builds several internally consistent but divergent futures to map the range of what could happen. Its goal is to make strategy robust and to change managers' perceptions, not to be right about one outcome. The two are complementary - forecasts handle predictable, near-term variables, while scenarios handle the deep uncertainties that forecasting cannot tame.

The intuitive-logics tradition favors a small set, typically three or four, because more become unmanageable and fewer collapse into a forecast. Schoemaker's method selects them by ranking driving forces on impact and uncertainty, then crossing the two most important and most uncertain (and largely independent) forces to define the scenario logics. The discipline is to keep the chosen futures genuinely divergent and internally consistent rather than producing a central case with optimistic and pessimistic bookends.

Its value, as van der Heijden argued, lies in better decisions and organizational learning rather than prediction. By inhabiting several plausible worlds, managers surface hidden assumptions, broaden peripheral vision, identify strategies that perform across futures, and design early-warning signposts that reveal which scenario is emerging. The structured 'strategic conversation' also builds shared mental models, so the organization can adapt faster when the future does diverge from expectations - which is precisely when forecasting-based plans fail.