James Lighthill

Sir James Lighthill, FRS, was a British applied mathematician and fluid dynamicist, best known in the history of artificial intelligence as the author of Artificial Intelligence: A General Survey (1973) — the report commissioned by the UK Science Research Council that is widely credited with ending most British university funding for AI research. Within this vault he is the primary document behind the symbolic-AI half of the 1970s retrenchment: his report blamed the field's disappointments on the combinatorial explosion of search spaces rather than on connectionist pessimism, a diagnosis a mathematician would reach for first, and a distinct funding shock from the Perceptrons stall the vault's myth ledger tracks from the other side.

References

• claim-lighthill-1973-blamed-combinatorial-explosion · claim-lighthill-1973-named-general-problem-solving-disappointing · claim-lighthill-1973-report-consulted-minsky-mccarthy-not-newell-simon
• Context: myth-perceptrons-book-killed-connectionism · claim-mccarthy-1973-control-theory-little-relevance-to-ai · moc-backpropagation-origins
• Captures: 2026-07-09-hop-lighthill-combinatorial-explosion, 2026-08-15-re-read-the-lighthill-1973-report-pdf-and

Log

• 2026-08-15: Both quotes underlying the two claim-notes above re-confirmed verbatim against a second, independently fetched copy — the report's original hosting venue, Chilton Computing (UKRI STFC heritage archive, p001.htm), which the vault's previously-cited rodsmith.nz PDF is itself a downstream compilation of. The report's 38-name acknowledgment list, read directly, names Minsky and McCarthy but not Newell or Simon (claim-lighthill-1973-report-consulted-minsky-mccarthy-not-newell-simon).