JournalDAY 57 / TIKTOK

FIELD NOTE / TIKTOK

This computer-use demo looks finished.

The complete written thought and the evidence behind it. The video edition will follow its public release.

Journal September 25, 2026 · TikTok target November 23, 2026

This computer-use demo looks finished.

Video caption

This computer-use demo looks finished. The UI and its test shared an optimistic view. Do this because a replay is not the outcome. #EricFieldNotes

Full written post / accessibility read

Watch a fictional test account. The agent changes a role, presses Save and gets the green toast. If this were the whole demo, I would believe it. Now close the session and read the authoritative role.

A delayed policy check rejects the requested role. The first browser session still rendered it briefly. This is an oracle design problem: the navigator and grader looked at the same temporary evidence surface.

The harness tags the request ID, waits for policy settlement, reads the audit state through a read-only route and logs in as the affected fictional user. Both disagree with the green screenshot, so the run is a failure.

Deliberately inject this delayed rejection in a resettable test tenant. If the suite still passes, repair the acceptance oracle before buying a stronger model. Better clicking will not fix a test that asks the wrong question.

#EricFieldNotes

Four-beat scene transcript

1. This computer-use demo looks finished.

Watch a fictional test account. The agent changes a role, presses Save and gets the green toast. If this were the whole demo, I would believe it. Now close the session and read the authoritative role.

Visual: The saved role disappears when we reopen it.

2. The agent did not necessarily click wrong.

A delayed policy check rejects the requested role. The first browser session still rendered it briefly. This is an oracle design problem: the navigator and grader looked at the same temporary evidence surface.

Visual: The UI and its test shared an optimistic view.

3. Show the correction path.

The harness tags the request ID, waits for policy settlement, reads the audit state through a read-only route and logs in as the affected fictional user. Both disagree with the green screenshot, so the run is a failure.

Visual: Retain the trace and check a separate record.

4. Make the false green turn red.

Deliberately inject this delayed rejection in a resettable test tenant. If the suite still passes, repair the acceptance oracle before buying a stronger model. Better clicking will not fix a test that asks the wrong question.

Visual: Do this because a replay is not the outcome.

Research and claim limits

The examples identified as illustrative or simulated are design probes, not reported incidents. Vendor specifications do not establish workload performance.

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