# Choose the response Re-estimate, split, investigate or retain a range according to the consequence of being wrong. Duration: 5 min Preserve the initial assumptions and record what evidence should trigger reconsideration. Re-estimation should expose learning rather than erase history. ## estimate-disagreement-m1-l3-reading ### Match response to cause Rewrite a misunderstood boundary, expose a hidden dependency, compare competing approaches or run a bounded investigation for missing evidence. Then re-estimate, split the work or retain a range. Record the original assumption and a reconsideration trigger. This four-part response is an authored synthesis, not a named industry standard. ### Worked example and transfer practice All examples below are fictional teaching material. Use synthetic notes; no workplace or personal data is required or uploaded. **End an investigation with a decision.** The fictional supplier connector is unknown. The team timeboxes a test using synthetic records, checks authentication and rate limits, and records whether the minimum export can run. The exit is an evidence review, not ‘keep investigating until comfortable’. The result may support re-estimating, splitting the work, retaining a range or dropping the option. **Try before reading the guide:** The test succeeds for a small batch but fails at expected volume. State the limitation, one next option and a condition for reconsidering it. Keep both the original assumption and the new evidence.
Practice review guide Do not treat the small-batch result as proof of production scale. A reduced batch option or another bounded test can be defensible if its outcome, risk and owner are explicit.
## estimate-disagreement-m1-l3-check Public answer keys are intentional. This check does not establish competence.