FIELD NOTE / TIKTOK
The polished feature solves the wrong promise.
The complete written thought and the evidence behind it. The video edition will follow its public release.
The written argument is here.
This approved TikTok edition is on the journal now. Its video player and original platform link will appear after each public release is verified.
The polished feature solves the wrong promise.
Video caption
The polished feature solves the wrong promise. The error was in the authority chain. Do not let summaries replace it. #EricFieldNotes
Full written post / accessibility read
Fictional SaaS team: a customer can use a feature during migration. The task sent to agents says enable it for enterprise tenants. API, UI and migration changes all pass. The PM sees a polished screen and accepts it. But ordinary enterprise tenants now have access they were never promised.
The coding agents implemented the shortened instruction. Their tests prove the shortened instruction. The missing evidence is that the original customer decision contained a tenant ID and expiry. The right corrective action is to restore that source as a protected acceptance fixture, not ask another agent to admire the diff.
Have a separate grader read the original decision and check the exact build for the migration tenant and a non-entitled tenant, through both UI and API. Release only to a defined cohort and verify the live postcondition. If the cohort did not appear, the canary is inconclusive.
The rule: a release is green only when the source promise, build behavior and customer observation agree. Do this because a beautiful feature for the wrong customer contract is still a product failure, even if every agent reports success.
#EricFieldNotes
Four-beat scene transcript
1. The polished feature solves the wrong promise.
Fictional SaaS team: a customer can use a feature during migration. The task sent to agents says enable it for enterprise tenants. API, UI and migration changes all pass. The PM sees a polished screen and accepts it. But ordinary enterprise tenants now have access they were never promised.
Visual: The PM saw a green demo, not the source decision.
2. No one made a bad button.
The coding agents implemented the shortened instruction. Their tests prove the shortened instruction. The missing evidence is that the original customer decision contained a tenant ID and expiry. The right corrective action is to restore that source as a protected acceptance fixture, not ask another agent to admire the diff.
Visual: The error was in the authority chain.
3. Test allowed and forbidden users.
Have a separate grader read the original decision and check the exact build for the migration tenant and a non-entitled tenant, through both UI and API. Release only to a defined cohort and verify the live postcondition. If the cohort did not appear, the canary is inconclusive.
Visual: Then watch the bounded release.
4. Keep the PM's decision in the gate.
The rule: a release is green only when the source promise, build behavior and customer observation agree. Do this because a beautiful feature for the wrong customer contract is still a product failure, even if every agent reports success.
Visual: Do not let summaries replace it.
Research and claim limits
- Google SRE Workbook: Canarying Releases (S149)
- NIST SP 800-218 Secure Software Development Framework (S150)
The examples identified as illustrative or simulated are design probes, not reported incidents. Vendor specifications do not establish workload performance.