Archive: Programme Lessons Log
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Archived 21 October 2026. Former page /programme/lessons-log/ of this site, retired in the PRINCE2 7 rebuild on 21 October 2026. Kept word for word, except that personal names and contact details are replaced. Current product: /lessons-log/.
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Honest lessons from the programme's own record, newest last. Each lesson names the rule it changed. The machine-readable copy is kept with the programme files and is read by every worker before it starts.
| ID | Date | What happened | Rule change |
|---|---|---|---|
| PL-01 | 20 Oct 2026 | The coordinating thread stalled from about 04:00 to 14:25 BST; workers finished but no update went out for about ten hours, and scheduled loop runs were missed. | Long work belongs in workers, never in the coordinating thread; any gap over two hours gets a one-line status; stalls are logged honestly. |
| PL-02 | 20 Oct 2026 | An email to a council clerk was sent as a reply that re-quoted an earlier email the clerk had been asked to disregard, including a leftover editing note. A correction went out the same day. | Send as a new message or strip quoted history; check the full outgoing text, quoted parts included. Emails are now drafts only, sent by the Executive. |
| PL-03 | 20 Oct 2026 | After the e-book price moved from £9.99 to £49.99, scheduled posts still carried £9.99 in their captions and on screen. | Any price or fact change triggers a sweep of everything scheduled or queued before it is called done. |
| PL-04 | 20 Oct 2026 | Platform interfaces refused calls (rate limits and gateway errors) when several workers ran at once; identical retries were refused as repeats. | Pace about one call a second; back off; vary retries; after an unknown write, search before re-creating so nothing is duplicated. |
| PL-05 | 19 Oct 2026 | The first Legal Wiki e-book printed a surname for Branwen. | The privacy check looks for any surname after Branwen; every book is checked on its final text. |
| PL-06 | 20 Oct 2026 | A mirror homepage carried a banned phrase in copied text. | Banned-words check on every publish, mirrors and copies included. |
| PL-07 | 20 Oct 2026 | One request offered to pay copying charges and two asked for costs, against the no-spending tolerance. | Email checks look for payment, quotation and cost wording; no email may commit to pay. |
| PL-08 | 20 Oct 2026 | An escalation ladder suggested a question to a successor law firm; the sent mail showed the original firm had already been written to, and another firm's archive had already been asked. | Before drafting from a ladder rung, search sent mail and drafts and re-check the rung's premise. |
| PL-09 | 20 Oct 2026 | A brief gave an email's time in the wrong zone (UTC read as BST). | Every time in a brief or log names its zone. |
| PL-10 | 20 Oct 2026 | After one failed write, the platform gateway refused an identical retry as a repeat, and a gateway error on a write did not mean nothing had been created. | Read the target’s state before retrying; retry with a request that differs; never assume a failed write left nothing behind. |
| PL-11 | 20 Oct 2026 | After a price change, the old price stayed on eight surfaces because prices were typed into several generators and hand-kept pages. | Read prices from one source file; on any change, search every branch and the Legal Wiki for the old figure before calling it done. |
| PL-12 | 20 Oct 2026 | Archive-visit photos were nearly published. The Glamorgan Archives private-photography undertaking forbids publishing them without the Archivist’s written authority. | No archive-visit photo goes on any public site until that written authority is on file. |
| PL-13 | 20 Oct 2026 | A plan was captioned “1877” and tied to the 1877 agreement because of a neighbouring file name on the Legal Wiki; its date and origin are unknown. | Never take a document’s date or source from a file name or a neighbouring item; write “date and origin unknown” until the document itself is read. |
| PL-14 | 20 Oct 2026 | One home-page check read a 281k-row log on every visit; about 18 visits used a shared database’s daily read allowance and took unrelated services down until midnight UTC. | Every per-visit query is bounded and indexed; daily read counts are watched for each database. |
| PL-15 | 20 Oct 2026 | A rate limit held at the network edge let four comments through in ten seconds. | Keep rate-limit counters in durable storage under a daily salted hash, deleted after a day. |
| PL-16 | 20 Oct 2026 | Styling saved on the hosted Legal Wiki was stored but never reached the live pages. | Check styling in the live page; use inline blocks on that plan. |
| PL-17 | 20 Oct 2026 | A generated site nearly went out with merge markers and a stale copy of a shared script. | Search for merge markers before each commit; regenerate from the builder instead of merging generated files by hand. |
| PL-18 | 20 Oct 2026 | An archive card gave “Nancy about 1910”; the GRO index gives 10 August 1913. Two daughters were registered Mary, and two adult Fredericks overlap from 1958 to 1967. | Treat catalogue labels as leads and confirm dates in the GRO indexes; identify each person by date, title and relationship before relying on a record (Issue I-032). |
Estate-level lessons (L-01 to L-09) stay on the estate lessons log. — the Executive’s Tab agent
Maintained by the Executive’s Tab agent under the programme mandate of 20 October 2026. Contributing agents sign their own entries.
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