Index

Mental Models

Counterfactual Thinking

Reasoning about outcomes by constructing a plausible scenario for what would have occurred under different conditions.

Counterfactual thinking isolates the real impact of a decision by imagining the alternative path not taken.

Core question

What would the outcome have been if we had not taken this action?

Example

Revenue grew 15% after a campaign launch. But the market grew 12% overall. The counterfactual shows the campaign's true marginal contribution was closer to 3%, not 15%.

How to apply

  1. 1.Define the specific action or decision being evaluated.
  2. 2.Construct the most plausible alternative scenario.
  3. 3.Estimate the outcome under that alternative.
  4. 4.Attribute only the difference between actual and counterfactual to the decision.

Pitfalls

  • ·Constructing self-serving counterfactuals that exaggerate impact.
  • ·Ignoring that counterfactuals are estimates, not facts.
  • ·Over-ruminating on past counterfactuals instead of applying them forward.

Questions

How is counterfactual thinking used in business?

It is central to measuring true ROI. Without a counterfactual baseline, you cannot separate real impact from background trends.

What makes a good counterfactual?

A good counterfactual changes only the variable in question and keeps everything else as close to the actual situation as possible.

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