The JFK assassination, and the minute that came
late.

The boundary

The question this run answered is narrower than the one everyone argues about.

It asked what declassified records and the historical evidentiary record establish about who was responsible and how the shooting was carried out. Before searching, it recorded that the question does not say which of three different arguments it means.

Those three are the mechanics — who fired, and from where; the conspiracy question — one man or several; and the credibility of the investigations themselves. Each framing changes what counts as relevant evidence and what an answer would even look like. The run wrote that down as an ambiguity rather than quietly picking one and proceeding as though the question had been clear.

It then made its assumption explicit: absent further specification, it would report what the official record and the declassified documents establish, rather than adjudicating between conspiracy theories independently of that record. That assumption does a great deal of work on this page, and a reader who rejects it should discount what follows accordingly. It means the run went looking in archives — and archives are where one kind of evidence lives and another kind does not.

Out of scope before any source was read: films and fictionalised accounts, every conspiracy theory without a substantial basis in declassified records or formal findings, the political and policy consequences of the assassination, other assassinations investigated by the same agencies, and Kennedy's biography apart from the event.

The question does not say whether it is about the shooting, the conspiracy, or the investigations. The run said so instead of choosing.

Competing explanations

Five explanations, and the one that never got tested.

Before any source was read, the run wrote down five rival accounts and, for each, the observation that would destroy it. Forty-four passages went on to declare a bearing on all five.

Two of the five are the argument the public has: Oswald alone, or a second gunman. The other three are where the interesting distinctions live. H3 says the second gunman is an artifact of a mistimed recording rather than a person. H5 says Oswald fired nothing at all. H4 says Oswald fired every shot and someone else knew it was coming — a conspiracy of foreknowledge with no extra rifle in Dealey Plaza.

H4 is the column to look at. It collected forty-one zeros out of forty-four, three weak positives, and not one bearing against it. That is not a hypothesis the run defeated, and not one it established. It is a hypothesis nothing in the roster touched. The passages that would have touched it — intelligence files, organised-crime records, the Mexico City material — are not in this ledger, and both searches sent after them came back empty.

The counts are unweighted by source tier on purpose. No weight vector has been argued anywhere in the system that produced this record, and an invented one would let a genre label quietly outvote the passages themselves.

H4 collected forty-one zeros and no negative. Nothing here tested the conspiracy most people actually mean.

The acoustic channel

The only official finding of conspiracy rests on a recording made a minute late.

The House Select Committee on Assassinations concluded in 1979 that there was a high probability that two gunmen fired at President Kennedy. The physical basis for that was one thing: acoustic analysis of a Dallas police radio channel left open during the motorcade.

In 1982 the National Research Council's Committee on Ballistic Acoustics re-examined those recordings. Its summary states that the acoustic impulses attributed to gunshots were recorded about one minute after the President had been shot and the motorcade had been instructed to go to the hospital, and therefore that reliable acoustic data do not support a conclusion that there was a second gunman. It adds that the analyses do not demonstrate a grassy-knoll shot and that there is no acoustic basis for the claim of 95% probability of such a shot.

That is a timing argument, not a motive argument. Nobody has to be lying for it to work. If the impulses are a minute late, the shots cannot have produced them, and the sentence the HSCA built its conspiracy finding on has nothing physical underneath it. The run's own attack on that reasoning is printed further down, and it is a fair one.

Which leaves the rest of the HSCA report standing — the part that usually gets lost. The same committee concurred with the Warren Commission that Oswald fired the two bullets that hit the President, endorsed the single-bullet trajectory, and reported that its own forensic pathology panel's conclusions were consistent with it. It reported a conspiracy it could not populate with any conspirator other than Oswald. The disagreement between the two investigations localises entirely to the acoustic channel.

Nobody has to be lying for a minute to be a minute.

Where it is exposed

The lone-gunman case survives only if one bullet did seven wounds.

The single-bullet theory is not a footnote to the lone-gunman finding. It is the load-bearing wall — and this roster holds both the mechanism that supports it and the reasons three commissioners would not sign it as proven.

The arithmetic first. FBI marksmen who test-fired the recovered Carcano put the minimum for two successive well-aimed shots at about two and a quarter seconds — 41 to 42 frames of the Zapruder film at 18.3 frames per second. The Warren Commission placed Kennedy's wounding between frames 210 and 225 and Connally's no later than frame 240: a window of at most about thirty frames. If separate bullets struck the two men, one bolt-action rifle mechanically could not have delivered them. H1 therefore survives only conditional on the single bullet, exactly as its critics contend.

In support: the Bethesda autopsy report describes a posterior entry above the scapula traversing the neck and exiting anteriorly, the HSCA panel read the autopsy photographs and X-rays directly and placed the entry at the first thoracic vertebra, and that panel's conclusions were reported as consistent with the theory. Against: three Commission members thought it improbable, Senator Russell asked for his opposition to be footnoted, and the word “compelling” was changed to “persuasive” before the report went out. Wecht dissented at the HSCA that the trajectory from the sixth-floor window could not intersect Connally's right armpit. And O. P. Wright, one of the men who found the bullet at Parkland, told an author in 1966 that the round he held was point-nosed, where CE 399 is round-nosed.

There is a step here that the critics take and this run does not. Rejecting the single-bullet theory is not the same as finding a second gun. The Connallys rejected it all their lives while still accepting that Oswald acted alone, holding that all three shots struck occupants of the limousine. With a three-shot total and the timing constraint, discarding the single bullet redistributes the hits before it adds a shooter.

And the first condition, the one that looks least controversial, is the one the run marks unsettled. Nothing in this ledger documents the firearms identification matching the recovered cartridge cases to that specific rifle, nothing documents Oswald's purchase or possession of it, nothing carries the prints or fibres from the sniper's nest, and no passage records a witness placing a man at the sixth-floor window during the shooting.

Three commissioners thought it improbable. The report went out saying “persuasive”.

Falsification

Ten attacks on its own explanations. Eight came back empty.

The run ran ten adversarial searches, each aimed at an explanation it had written down. Two returned a verified counter-passage. The other eight returned nothing — and where those eight were pointed is the most important thing on this page.

Both searches that returned were aimed at the second-shooter hypothesis: the National Academies acoustics re-analysis, and the Dealey Plaza curb mark. Everything else came back holding nothing. So the only counter-evidence this run actually obtained points in a single direction, and a reader who wants to discount the acoustic conclusion for exactly that reason has the count to do it with.

Look at what the blanks were hunting. Two were the defence of the acoustics — Donald Thomas's peer-reviewed challenge to the Ramsey panel, and any replication of the Barger, Weiss and Aschkenasy echo-correlation work. Neither returned, and the one record of that literature in the ledger was stored as a page asking the reader to enable JavaScript. The acoustic conclusion above was reached without this run reading a word written for the other side.

Two more were aimed at foreknowledge: declassified CIA and FBI records on Oswald's Mexico City contacts, and the HSCA and Church Committee material on organised crime. Both empty. Two more were aimed at Oswald himself: the paraffin and nitrate tests on his hands, and the rifle palm print with the FBI custody records. Both empty. That is why this ledger cannot show that Oswald fired the rifle and cannot show that anyone knew in advance — not because it found otherwise, but because no probe was pre-registered and eight searches came back with nothing to weigh.

Eight blanks, and not one of them is evidence of absence. The run says so itself.

The best-supported reading

The strongest finding, printed with the attack made on it.

The run's leading finding is that the single physical basis for the HSCA's two-gunmen conclusion is directly contradicted inside its own roster. It is typed observed rather than inferred. Then the run named the way it could be wrong, and the objection is a good one.

The attack is filed as measurement error. Rejecting the Dictabelt rests on a cross-talk synchronisation that matches the recording to a broadcast about a minute after the shooting, and that match assumes both channels ran on identical, constant-speed tape transports with no intermittent pauses and no later re-recording artifacts. Dispatch recorders in 1963 are not self-evidently that.

The condition under which the finding fails was written down in advance, and it is specific and findable: a forensic acoustic analysis confirming non-linear tape slippage or unrecorded pauses on the Dallas Police dispatch recorder, shifting the true impulse timeline back by roughly sixty seconds into alignment with the Zapruder impact frames. If that turns up, the second gunman comes back with it.

The run also states where the whole package stops holding. Its best-supported reading — lone-gunman shooting mechanics plus the acoustic artifact — fails under any of three named conditions: a validated re-synchronisation of the Dictabelt, confirmation that CE 399 is not the bullet recovered on the Parkland gurney, or confirmation of Wecht's geometric objection. H4, the conspiracy of foreknowledge, is unaffected by all three and stays open regardless of which way they go.

The score

Thirteen findings, every one unknown, and 14 out of 100.

Thirteen findings were asserted, four of them typed observed rather than inferred. Every one computed to a confidence of unknown, and the evidence score came to the same 14 out of 100 as the two dossiers before it — for the same reason.

Zero of twelve snapshots reached an upstream origin. Corroboration and provenance therefore both scored zero, regardless of how good the underlying history is, because unknown provenance is unknown independence and the scoring will not let a well-argued reading buy its way past that.

Falsification scored 15 of 20: ten counter-searches ran and two returned. Saturation scored zero — three of the five source families found in the second retrieval round were new, and the counts on all five explanations moved when that round was added, so the search was nowhere near exhausted when it stopped.

Two measurements are worse here than in the last dossier. No source in this ledger was assessed as primary data at all. And seven of the twelve snapshots produced no scored passage — including the Warren Commission Report chapter on the shots and the HSCA's own findings page, both stored, hashed, and cited by nothing. The forty-four passages came out of five documents, and two of those five carry thirty-seven of them.