What it corrects
Positive planning asks how to succeed and often produces familiar, socially acceptable ideas. Inversion changes the search space: how would we guarantee failure? Causes that are hard to see in an optimistic plan become obvious when failure is the objective.
Inversion is most useful when a recommendation looks clean, when brainstorming repeats itself, or when the team can name aspirations more easily than constraints.
How it works
- Define a concrete failure state and date.
- List the actions, dependencies, and incentives that would make it likely.
- Separate controllable causes from external shocks.
- Remove, reverse, or monitor the largest controllable cause.
In a Business Case Weekly case
In the McDonald’s case, asking how to build a repeatable system is useful. Asking how to make replication fail exposes another set of variables: unclear ownership, inconsistent unit economics, and local behaviour that the operating model cannot control.
In your answer
- “This decision fails predictably if …”
- “The most controllable cause is …”
- “I would remove or monitor it by …”
Common misuse
Inversion is not generic pessimism and it does not require eliminating every risk. Its purpose is to find avoidable failure conditions that normal forward planning leaves hidden.