---
title: "Léon Bottou's 2017 foreword states the reissued Perceptrons text is the 1969 first edition (fourteen chapters, 0–13); the Prologue and Epilogue were written for the 1988 Expanded Edition"
type: "claim"
status: "seedling"
audit_status: "capture-verified — Bottou's foreword PDF (9 pp.) was fetched and read directly at capture time (2026-07-09); freely accessible at the source URL. No independent re-fetch this promotion. The foreword corroborates the book's *structure*, not its *content* — it contains no searchable 1969 body text. | 2026-07-09 scheduled cross-model audit (auditor claude-fable-5; capture writer claude-sonnet-5): PDF independently re-extracted (9 pp. confirmed); source_quote verbatim; the reissue's own copyright page adds one nuance the foreword omits — 'Handwritten alterations were made by the authors for the second printing (1972)', so the reproduced first-edition text carries 1972 author alterations. Claim unaffected (the Prologue/Epilogue boundary is what the note rests on); flag stands as honest."
source_url: "https://leon.bottou.org/publications/pdf/perceptrons-2017.pdf"
source_author: "Léon Bottou (foreword to the 2017 MIT Press reissue of Minsky & Papert, Perceptrons)"
source_date: "2017-02-16T00:00:00.000Z"
source_quote: "This reissue contains the first edition text of Perceptrons, with fourteen chapters numbered 0 to 13. The accompanying Prologue and Epilogue were written for the 1988 expanded edition."
source_tier: 2
provenance: "Promotion from 10-inbox/raw/2026-07-09-confirm-against-a-standalone-1969-first-edition-scan.md, 2026-07-09"
origin: "batch"
derived_from: ["20260709-1430-confirm-against-a-standalone"]
date_created: "2026-07-09T00:00:00.000Z"
tags: ["perceptrons","minsky-papert","credit-assignment","history-of-ml","book-structure"]
audits: ["2026-07-09 claude-fable-5"]
---


Léon Bottou's foreword to the 2017 MIT Press reissue of *Perceptrons* states the
book's compositional structure directly: "This reissue contains the first edition
text of *Perceptrons*, with fourteen chapters numbered 0 to 13. The accompanying
Prologue and Epilogue were written for the 1988 expanded edition." The 1969
content is therefore the fourteen numbered chapters; the Prologue ("The View from
1988") and the Epilogue are 1988 additions.

This matters as an independent line of evidence for the vault's
[[entity-credit-assignment|credit-assignment]] thread. The claim that "credit-assignment" belongs to the
1988-added material rather than the 1969 body
([[claim-perceptrons-credit-assignment-only-in-1988-epilogue]]) had rested on
**page-count triangulation** — 292 printed pages in the Expanded Edition versus
258 in the 1969 first edition, with the phrase indexing in the Epilogue region.
Bottou supplies the same structural fact by *statement* rather than inference: the
1969 and 1988 layers of the single 1988-printed book are separable, and the
Prologue/Epilogue sit outside the 1969 text. It is a named-academic source (Tier 2)
writing for the official reissue, describing the book's own construction.

The corroboration is structural, not textual: the foreword is only Bottou's nine
pages, not the book body, so it cannot itself be searched for the phrase
"credit-assignment." It establishes *where the 1969 boundary falls*, which is the
mechanism by which the phrase can be 1988-only even though it appears in the
single available scan. The residual gap — a direct read of the 1969 body itself —
remains at [[question-verify-perceptrons-1969-credit-assignment-absent]], and is
compounded by the fact that no standalone 1969 scan is freely available
([[claim-perceptrons-1969-standalone-scan-not-freely-available]]).