Neville states flatly that he has had the vision himself and therefore knows Blake's account of eternity is true.
Date (happened)
before 1961
bound · possible
Reasoning
Qualifying passage ids [550837] belong to telling lecture nids [1984]. Each listed lecture contributes the selected safe envelope year 1961 (MAX of its non-refuted delivery years); 1961 is the MIN across telling lectures.
before 1963
bound · possible
Why
Corrects the phase4 L6a envelope on this event from before 1961 to before 1963.
Reasoning
Envelope recompute, arithmetic only. The phase4 L6a row on this event states its own rule: each telling lecture contributes MAX of its non-refuted delivery years, and the envelope is the MIN across telling lectures. Recomputed live over lecture nid(s) 1984 that row cites, MAX(non-refuted field_delivery_year) gives 1963, not the 1961 the row carries — the bound was below its own stated rule and therefore UNSAFE: it asserted the event did not happen in 2 year(s) where it may sit. Same premise, same evidence, no re-reading and no re-judgement; only the maximum was taken correctly. The L6a row stands beside this one (append-only). Ruling: #2235 delta 1, architect 378.
before 3 May 1963
bound
Reasoning
Neville describes the vision in the past tense ('I have had the vision') as something already experienced by the time of this telling; the lecture's own delivery date is now certain to the day (1963-05-03), so any event recounted in it must have occurred before that day. This is a deductive tightening of the existing year-level bound, not a re-judgement of the vision's own date, which remains unknown.