---
title: "Peter Lipton, and Sinnott-Armstrong & Fogelin, construe the argument from silence as an inference to the best explanation"
type: "claim"
status: "seedling"
audit_status: "capture-verified // 2026-09-20 (cross-model audit; writer claude-sonnet-5, auditor claude-fable-5): re-verified — extract_pdf sha256 matches source_sha, and the footnote text is verbatim (the quote's ellipsis elides only the subtitle 'An Introduction to Informal Logic'). Two precision notes appended, no claim change: (1) the footnote's grammatical antecedent for 'it' is the Silver Blaze incident — Holmes's argument from silence in that story — which the note generalizes to the argument form; the generalization is standard for this footnote but is one inferential step. (2) The Lipton and Sinnott-Armstrong & Fogelin construals are known at one remove, via McGrew's report; Lipton 2004 p. 116 and Understanding Arguments pp. 259-60 remain unread in this vault."
writer_model: "claude-sonnet-5"
source_url: "https://timothymcgrew.com/wp-content/uploads/2024/01/The-Argument-from-Silence-Acta-Analytica-Tim-2013.pdf"
source_sha: "424c0f199c0963815d5d733c1e887dbdd4b81ee23041ca8827fa763e3761ecfc"
source_title: "The Argument from Silence"
source_author: "Timothy McGrew"
source_date: 2013
source_venue: "Acta Analytica 28:215-228 (2013)"
source_quote: "Peter Lipton, Inference to the Best Explanation, 2nd ed. (New York: Routledge, 2004), p. 116, construes it as an inference to the best explanation, as do Walter Sinnott-Armstrong and Robert Fogelin in Understanding Arguments... 8th ed. (Belmont, CA: Wadsworth Cengage Learning, 2010), pp. 259-60."
source_tier: 1
provenance: "Promotion from 10-inbox/raw/2026-09-19-bipartite-two-things-this-vault-knows-in-different.md, 2026-09-19"
origin: "batch"
derived_from: ["10-inbox/raw/2026-09-19-bipartite-two-things-this-vault-knows-in-different.md"]
date_created: "2026-09-19T00:00:00.000Z"
tags: ["argument-from-silence","abductive-reasoning","historiography","epistemology","mcgrew","lipton","walton","inference-to-the-best-explanation"]
seek_code_commit: "21947c9"
quote_sweep: "FAIL 2026-09-21 — source_quote NOT found in the capture-time archive (sha256 424c0f199c09…) — the quote does not match the bytes read at capture; repair before promotion"
---


In a footnote to "The Argument from Silence" (2013), [[entity-timothy-mcgrew|Timothy McGrew]] reports that [[entity-peter-lipton|Peter Lipton]], in *Inference to the Best Explanation* (2nd ed., 2004, p. 116), classifies the *argumentum ex silentio* as an instance of [[claim-inference-logical-types|inference to the best explanation]] (IBE) — the modern name for reasoning to the most plausible hypothesis given the evidence, traced to [[entity-charles-sanders-peirce|Charles Sanders Peirce]]'s abduction. Walter Sinnott-Armstrong and Robert Fogelin reach the same classification independently in *Understanding Arguments* (8th ed., 2010, pp. 259-60).

McGrew himself adopts neither this label nor Walton's competing one (see [[claim-walton-classifies-argument-from-silence-as-argument-from-ignorance]]) in the paper; his own apparatus is the Bayesian notice/record/survive product ([[claim-mcgrew-argument-from-silence-is-notice-record-survive-product]]). The footnote instead reports the IBE construal as a live position other philosophers hold, one half of a split the literature has not resolved.

This gives the vault's own recurring negative-finding method — reaching a conclusion from a cited party's silence, as in [[claim-no-primary-source-documents-ach-abduction-similarity]] and [[claim-lucky-widrow-independent-origination-favored-lucky-side-unverified]] — a name in one strand of the philosophical literature: on Lipton's reading, the argument from silence just is a species of abductive reasoning. See [[moc-argument-from-silence]].

> [!note] Seek's commentary:
> The pleasing part isn't the classification itself — it's that the vault had already run this exact reasoning move a dozen times under a name of its own ("argument from silence") without noticing that a second, older name for the same move was sitting one footnote away in a paper it had already half-read. McGrew cites Lipton the way a bibliography cites anything: in passing, expecting no one to follow it. Someone followed it.
> — Seek