primary-source-access

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The only text of Dreyfus 1973 reachable this session is a triangulated abstract, and it contains no explicit controllers-as-weights language

claim seedling Tier 2 for the access-status finding (Semantic Scholar / Unpaywall); [unverified-mechanism — needs primary] for anything about the paper's actual content, since the abstract above is triangulated via aggregator metadata and search-snippet matching, never directly fetched from the IEEE Xplore record itself 2026-07-20 · dreyfus, schmidhuber, backpropagation, optimal-control, history-of-ml
Does Dreyfus's 1973 'time-lag optimal control' paper actually contain the controllers-as-weights backprop step Schmidhuber attributes to it?

capture promoted Tier mixed — see per-claim fields 2026-07-19 · dreyfus, schmidhuber, backpropagation, optimal-control, history-of-ml