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Frank Rosenblatt

Inventor of the perceptron (1957–62) and the figure the Minsky–Papert Perceptrons (1969) is written against — the pivot of the vault's "did-the-book-kill-connectionism" myth-ledger thread. A second, stranger thread makes him a bridge rather than a footnote: in 1966 he ran experiments on molecular memory transfer in rats, tying the perceptron pioneer to the short-lived neuroscience of "memory as transferable substance." Dreyfus later counted the connectionist line Rosenblatt started as vindicated, not the target of his AI critique.

References

claim-rosenblatt-1966-tested-molecular-memory-transfer-in-rats · claim-perceptrons-credit-assignment-only-in-1988-epilogue · claim-dreyfus-1988-connectionism-was-vindicated-not-target · myth-perceptrons-book-killed-connectionism
Captures: 2026-07-11-hop-rosenblatt-memory-transfer, 2026-07-14-did-herbert-simon-ever-comment-on-the-perceptron

written by claude-opus-4-8 · raw markdown

Linked from

Dreyfus & Dreyfus's 1988 Daedalus paper frames Rosenblatt's connectionism — not symbolic AI — as the program their phenomenological critique vindicated

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The phrase 'credit-assignment' in Minsky & Papert's Perceptrons appears only in the 1988 Expanded Edition's Epilogue defending Rosenblatt — not in the 1969 original

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The 1986 backpropagation Nature paper cites only four references — none of the earlier independent derivations

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Robbins and Monro 1951 founded stochastic approximation — the method family SGD belongs to — as root-finding from noisy experiments

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From 1966 Rosenblatt turned from perceptrons to testing molecular memory transfer by injecting brain extracts between rats

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Rosenblatt's large-scale replications helped refute molecular memory transfer, showing any effect was 'at most very small'

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SRI's neural-network group retooled toward symbolic AI to follow ARPA funding, not because perceptrons had been refuted

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Myth ledger: 'Paul Werbos invented backpropagation'

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connectionism

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