STfA
Decision confidence30-45 minReview assumptions and options

Canvas for diagnosis: Assumption Mapping

A diagnostic tool for ruthlessly exposing, categorizing, and deliberately testing unspoken assumptions in architecture design.

Ideal when decisions are based on implicit assumptions and risks are difficult to grasp.

Diagnostic workflow

These steps lead from observing a symptom to a grounded intervention.

Problem: 0/3Method analysis: 0/5Intervention: 0/3
  1. 1

    Symptoms worsen

  2. 2

    Clarify decision-making framework

  3. 3

    prioritize critical assumptions

  4. 4

    Establish evidence and experiments

  5. 5

    Start intervention

Schritt 1Which decision is currently based on assumptions that we have not yet thoroughly examined?

STEP 1 — Clarify the problem and decision

Assumption mapping works best when the symptom and the decision at hand are crystal clear.

Schritt 2What do we currently believe without having sufficient evidence?

STEP 2 — Prioritize assumptions

Here the method makes the difference: we separate plausible assumptions from critical, risky assumptions.

Schritt 3What decision should we make differently now because the assumptions are still uncertain?

STEP 3 — Derive interventions and next steps

Now we translate findings into concrete steps: what should we pause, what should we test, what should we change first?

Perspective check

0 / 9

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Next bridges & export

Use the export functions for workshop documentation and jump directly into related archetypes or interventions when diagnosis turns into action.