decision-premortem-analysis

A pre-mortem analysis assumes your project has already launched and failed, then works backward to uncover why the chosen strategy might not work. This technique breaks commitment bias and defensive filtering by generating a structured failure report before execution begins.

To run a pre-mortem, define the intended outcome and timeline, generate failure modes without filtering for probability, group them by execution or assumption categories, then prioritize the top 3–5 by probability multiplied by severity to assign high-leverage pre-emptive actions.

Use failure mode analysis when commitment bias and optimism bias have already triggered defensive filtering after a decision is made. A structured pre-mortem forces an explicit failure assumption to surface honest risk assessment that standard planning often suppresses.

You need to provide the chosen decision, the project timeline, measurable success criteria, and the top failure modes you fear most. This input allows the pre-mortem to generate a failure report, classify modes, prioritize actions, and build an assumption inventory.

A pre-mortem produces an assumption inventory that prioritizes what must be true for the direction to succeed, enabling early validation. It identifies these assumptions by systematically generating failure modes and grouping them into execution, assumption, or unknown categories.