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What Happens If: Where the Misunderstanding About Simulation Starts
“What happens if…” stands at the start of almost every simulation. And this is exactly where the misunderstanding begins. Because what is often meant is: what will actually happen? That is not a simulation, that is forecast thinking under a different label.
The difference is not semantic, it is material to steering. A forecast tries to hit the most likely path into the future. A simulation shows what could happen and how decisions affect it. Forecasts deliver a number, simulations deliver options.
An example: energy costs rise by 20 percent. The forecast tells you what that does to the margin. The simulation shows whether pricing, sourcing or product mix can counteract it, and what each option achieves in which scenario.
The forecast describes the problem. The simulation makes it workable.
Good simulations do not make uncertainty smaller. They make it steerable: which drivers really move the result? Which measures are robust across several scenarios? Where are the decisions you cannot regret either way?
Use simulations like forecasts and you will be disappointed, because the future rarely sticks to the plan. Use them as a decision tool and you gain the ability to act.