The Prediction Graveyard
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Unmarked Graves / Thomas J. Watson Sr. / Thomas J. Watson Jr.

unmarked · Unscored / disputed

Attributed claim: the world market would need only about five computers.

Source-backed summary; not presented as a verbatim quotation.

Thomas J. Watson Sr. / Thomas J. Watson Jr.
IBM leaders, attribution varies · United States

Made: Not establishedExamined: See evidence
Original conceptual trajectory diagram illustrating Provenance unresolved
Reasoning and outcomes. Original illustration for The Prediction Graveyard. Aniruddh Jangid, 2026. Original digital diagram. CC BY 4.0. Changes: none. This is a conceptual diagram, not an archival image.

The popular version and its context.

The quotation circulates with several dates and both IBM leaders’ names. The changing attribution prevents a dependable original forecast from being identified.

Quote origin: world market for five computers

What the archive supports.

Quotation research has not located substantive evidence for either attribution. A genuine 1953 sales account concerns expectations of five orders and receipt of eighteen, not a limit on world demand.

Quote origin: world market for five computers
Popular attribution

Attributed claim: the world market would need only about five computers.

Source check

unsubstantiated_attribution

Current finding

Unsubstantiated attribution; leave forecasting scores blank.

Evidence against the attribution.

IBM’s corporate search and the dated stockholder account undermine the familiar interpretation. The alleged 1943 date is not an authenticated prediction date.

Quote origin: world market for five computers

Verdict.

Reasoning: Not assessed · Outcome: Not assessed

Unsubstantiated attribution; leave forecasting scores blank.

No authenticated original prediction established. Unknown dates are null; absence of evidence is not treated as proof that the person never said it.

The lesson.

Can a specific product sales anecdote be mistaken for a forecast about an entire future market?

Sources.

  1. Quote origin: world market for five computersquote_investigation · 2026-08-29 · attribution investigation and 1953 context

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