No document in the full 1973 Lighthill Report symposium names any author, textbook, or concept from the LQG/optimal-control lineage

lighthill-reportmccarthycontrol-theoryoptimal-controllqg-controldisciplinary-wallhistory-of-aihuibert-kwakernaak

Across McCarthy's full 1973 review and all five parts of the Artificial Intelligence: a paper symposium it answers — Lighthill's Part I, Sutherland's Part II, and Needham, Longuet-Higgins, and Michie's Part III — no document read this session names Rudolf Kalman, Lev Pontryagin, Richard Bellman, Huibert Kwakernaak, Ravi Sivan, the Riccati equation, "optimal control," or "LQG." These are the entities and terms that constitute the specific mathematical lineage the vault's Kwakernaak cluster traces forward to Song Jian's population-policy mathematics.

The three primary readings that ground this are held separately: McCarthy's clause is generic, naming no subfield (claim-mccarthy-1973-control-theory-clause-names-no-specific-subfield); Lighthill's Part I speaks only of "classical control technology" and "control engineering" (claim-lighthill-1973-report-describes-automation-as-classical-control-technology); and Michie's one field-label use of "control theory" glosses the industrial-automation category, not a research program (claim-michie-1973-glossed-control-theory-as-automation-outgrowth). The 1973 debate's own vocabulary reads as the narrower, more applied target.

This is the primary-record answer to the capture's core question, and it qualifies the vault's own bridge. The connection between McCarthy's line and the optimal-control/LQG program (observation-kwakernaak-lqg-textbook-bridges-population-policy-and-mccarthy-1973-dismissal, claim-kwakernaak-sivan-1972-linear-optimal-control-systems-leading-reference) is the vault's synthesis, not a textual fact recoverable from the 1973 exchange: the abstract mathematics Kwakernaak and Sivan's textbook represents is never named, confirmed, or ruled out by name in the primary record. See moc-backpropagation-origins.