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Decision Assumptions

Before any big decision, write 5 assumptions you relied on — test the weakest.

25 min Advanced

Goal

Reveal many decisions rest on assumptions not facts.

Steps

  1. 1
    Name decision.
3 more steps locked

Expected Outcome

Immediate
Surface a killer assumption.

Evidence base

School: Lean Startup

Founders: Eric Ries (2011)

Ries — assumption mapping.

Keywords

Frequently asked questions

How long does "Decision Assumptions" take?
This exercise takes about 25 minutes, practiced solo in a Written reflection format.
When will I notice the effect of "Decision Assumptions"?
Surface a killer assumption. In the short term: Decision built on facts.
Is "Decision Assumptions" evidence-based?
Yes — it draws on Lean Startup (Eric Ries (2011)). Ries — assumption mapping.
Is "Decision Assumptions" suitable for beginners?
Its difficulty level is: Advanced. No external tools required — it can be practiced directly inside the app.

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