Choose the response

Preserve the initial assumptions and record what evidence should trigger reconsideration. Re-estimation should expose learning rather than erase history.

Reading

core

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.

Knowledge check

core

Practice · formative check

Select the response that preserves uncertainty honestly.

Concepts: uncertainty, learning action

1. The team cannot size an integration because the vendor API behaviour is unknown. What is the best next action?

Add a large private buffer and report one numberRun a bounded investigation and define what evidence will end itSize only the known work and omit the dependency

There is no attempt limit or pass/fail state. Completing the check only enables the lesson's separate explicit completion control; it never records completion or certificate eligibility itself.

Use the equivalent lesson path

Activity ready. Attempts are unlimited. Completing this practice activity enables the lesson's separate, explicit completion control.

Equivalent non-interactive path

Answer and feedback guide

The team cannot size an integration because the vendor API behaviour is unknown. What is the best next action?

Add a large private buffer and report one number: Hidden padding preserves neither the uncertainty nor its trigger.
Run a bounded investigation and define what evidence will end it (best answer): Correct. Resolve the material unknown before manufacturing precision.
Size only the known work and omit the dependency: Omitting a material dependency makes the estimate misleading.