Neville gains experience to understand Abdullah's Cabala letter
Date (happened)
between 1931 and January 1965
unresolved
between 1931 and January 1965
estimated · probable · preferred
Why
M7 dating pass (529; 525's readers, packet 001)
Reasoning
Letter given about 1931 (34 years before Jan 1965; Abdullah's two Kabbalah letters are dated 1930..1931, event 771); the experience was gained 'in the last thirty-odd years since', i.e. up to the telling.
before 15 January 1965
bound
Why
M7 dating pass (529; 525's readers, packet 001)
Reasoning
The Cabala lecture (node 1842) is delivered 1965-01-15 (certain) and he says he now understands the letter better.
before 1935
bound · refuted
Why
pm-actor-525: refuted by the M7 dating pass (529; 525's readers, packet 001): The passage says he gained the experience over the thirty-odd years since Abdullah gave him the letter (about 1931, thirty-four years before 1965-01-15), so the event is that accumulation up to 1965, not something before 1935.
Reasoning
Thirty-odd years since the letter is a relative anchor beyond the 1965 telling.
Told / reported
15 January 1965
estimated
Why
The passage itself gives no fixable start date for the happening -- 'thirty-odd years' conflicts with an unresolved 'eleven years' in the same sentence, flagged ambiguous in the lecture's processing notes.
Reasoning
The passage recounting the decades-long process of gaining experience to understand Abdullah's letter is told within this lecture; the lecture's delivery date (1965-01-15) is a certain, independently corroborated stated claim, so the told date inherits that same confidence.