Neville had to ask his wife what a Don Loper dress was before he could understand the letter he was reading out.
Date (happened)
before 1964
bound · possible
Reasoning
Qualifying passage ids [545219] belong to telling lecture nids [1812]. Each listed lecture contributes the selected safe envelope year 1964 (MAX of its non-refuted delivery years); 1964 is the MIN across telling lectures.
before 3 April 1964
bound
Why
Tightens the phase4 L6a envelope from before 1964 to before 1964-04-03.
Reasoning
L6a envelope tightened to the telling day of nid 1812 (certain delivery 1964-04-03); same premise, finer precision. The phase4 L6a bound on this event is `before 1964`, an envelope over delivery YEARS computed without reading text. Its premise is that the fact is true by the time it is told; on that same premise the DAY of the telling is a strictly better upper bound. Nothing is re-decided — the bound is stated to the precision the evidence always supported. The delivery claim for 1964-04-03 on nid 1812 is held at `certain` by the corpus, which is what carries this claim. #2274; the L6a row stands beside this one.
3 April 1964
stated
Reasoning
The preceding passage says Neville received the letter in 'the morning's mail'; he then says he had to ask his wife about the dress before reading the story during the lecture that evening. Node 1812's independently corroborated delivery date is 1964-04-03, placing the same-day question exactly.