Neville's lecture series closes on 1967-12-15
Date (happened)
15 December 1967
unresolved
15 December 1967
stated · preferred
Reasoning
Neville directly states the closing date of the series from the platform; this is the speech act itself (an announcement), so it is written as the happening date, not a told claim. Lecture 1308's own delivery date (1967-11-20) is certain, and an existing corpus match (npr 23410, 58990-91) links this event to node 1314, a lecture actually delivered on 1967-12-15, independently confirming the announced date held.
15 December 1967
stated · probable
Source
derived from the event's own title: "Neville's lecture series closes on 1967-12-15"
Reasoning
The event held NO date claim of any kind; its own title states 1967-12-15 (day precision, parsed as "iso"). ⚠ A title in this corpus is a DERIVED artefact — an earlier pass wrote it from the passage text — so this claim is title-derived and is marked as such rather than cited as a source document; the underlying text remains the real evidence and would supersede it. Confidence `probable`, never `certain`, for that reason. Precision is never inflated beyond the title's own wording. CALIBRATION (run v1.1/l1.4/titledate, against the 489 events that already hold an independent preferred date): day 96.1%, month 94.1% agreement. Titles naming a REFERENCE event rather than the event itself ("before", "after", "during the week of", "per ... lecture") are refused outright and never reach this write — reading an anchor as the date is the same laundering phase3b committed when it wrote telling dates onto events.