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Assumption testing checklist

A one-page checklist for turning a belief into evidence.

Published 18 Oct 2026


Before the test

  • [ ] The assumption is written as a clear, falsifiable statement
  • [ ] You know what result would prove it wrong
  • [ ] The test is the cheapest way to learn something real
  • [ ] You have decided in advance what you will do with each outcome

During the test

  • [ ] You measure behaviour, not opinions
  • [ ] You record observations as they happen

After the test

  • [ ] Evidence is added to the related risk in your analysis
  • [ ] The likelihood score is reassessed
  • [ ] The next assumption to test is chosen

Demonstration content.