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title: Historical Lineage — McCarthy's Advice Taker
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type: reference
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tags: :passepartout:architecture:
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* Historical Lineage — McCarthy's Advice Taker
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:PROPERTIES:
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:ID: 3d25a808-d623-42fb-a054-15fb28cd464b
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:ID: design-mccarthy
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:CREATED: [2026-05-10 Sun]
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:WEIGHT: 40
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:END:
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McCarthy's "Programs with Common Sense" (1959) is the direct intellectual ancestor of the Passepartout architecture. The paper proposed an "advice taker" — a program that "will draw immediate conclusions from a list of premises" expressed in "a suitable formal language (most likely a part of the predicate calculus)." The program would:
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1. Accept declarative statements about the world as input.
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2. Store them as logical formulas.
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3. Reason from them to produce new conclusions.
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4. Accept new facts and revise its conclusions.
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This is precisely the Passepartout pipeline: the archivist extracts declarative facts from prose → Screamer checks them for consistency → VivaceGraph stores them → the planner reasons from them → new facts from gate outcomes and deductions revise the store. McCarthy proposed it in 1959. Passepartout is building it in 2026.
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The gap between McCarthy's proposal and Passepartout's implementation is the /hallucination problem/. McCarthy assumed facts would be entered by a human programmer in formal logic. Passepartout's facts are extracted from natural language prose by an LLM — a probabilistic process that requires deterministic verification. Screamer is the component McCarthy didn't need: a constraint solver that gates LLM-proposed facts against the existing fact store.
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The connection is not metaphorical. McCarthy cited /Principia Mathematica/ as an influence on Lisp. Passepartout's Whitehead analysis traces the same PM → Lisp lineage. The advice taker → Passepartout lineage completes the arc: PM's formal logic → Lisp → McCarthy's advice taker → Passepartout's neurosymbolic engine.
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Reference: McCarthy, J. (1959). Programs with Common Sense. /Proceedings of the Teddington Conference on the Mechanization of Thought Processes./
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