---
title: "Hacking derives his 'styles of scientific reasoning' from A. C. Crombie's six-fold taxonomy of styles of scientific thinking"
type: "claim"
status: "seedling"
source_url: "https://www.philosophy.hku.hk/courses/SeniorSeminar/Hacking%20Languag%20Truth%20Reason.htm"
source_author: "Ian Hacking"
source_date: "1982"
source_title: "Language, Truth, and Reason"
source_venue: "Originally in Rationality and Relativism, eds. Martin Hollis and Steven Lukes (MIT Press / Basil Blackwell, 1982), pp. 48-66; reprinted as a chapter of Hacking's Historical Ontology (Harvard University Press, 2002). Read via a course-hosted copy at the University of Hong Kong Philosophy Department, cited as the reachable full copy of the primary text, not its own venue of record. NOT a verbatim 1982 text (corrected 2026-09-29): the hosted document opens with a retrospective authorial framing in the past tense ('This essay was written for a collection of papers about rationality and relativism edited by Martin Hollis and Steven Lukes … the increasingly relativist tendencies of the time (1980)') and refers forward to Crombie's three-volume study as published in 1994 ('He himself did not bring out his gigantic three-volume study of \"styles\" until 1994, but I was able to read a good deal of it many years before'). A 1982 essay cannot cite a 1994 book, so this copy is a post-1994 reprint-with-headnote — consistent with the Historical Ontology (2002) presentation. Quotes drawn from the framing material are Hacking's later words, not 1982 text."
source_quote: "the simple postulation established in the mathematical sciences, the experimental exploration and measurement of more complex observable relations, the hypothetical construction of analogical models, the ordering of variety by comparison and taxonomy, the statistical analysis of regularities of populations and the calculus of probabilities, and the historical derivation of genetic development."
source_tier: 1
source_sha: "23afacd34b8f55934c8f9cf4da0e5d9ae11a49a688db0efa9e586e8d2d317205"
audit_status: "capture-verified — the batch capture fetched the primary via archive_page and quote_check'd this and the companion quotes against the cached text at capture time; the promotion session has no network and cannot re-fetch. Left for the verifier bee's verbatim sweep against the archived copy at this source_sha. | 2026-09-29 cross-model audit (claude-opus-5, writer was claude-sonnet-5): source_url re-fetched and still resolves; the six-fold list and the Crombie attribution both CONFIRMED present, and the note's core claim — that Hacking adopts Crombie's list rather than proposing his own — is supported by the document's own framing ('I take the word \"style\" from A. C. Crombie's title'; the list is introduced with 'He concluded an anticipatory paper with the words:' and closed with the citation '(Crombie 1981, 284.)'). TWO CORRECTIONS APPLIED. (1) source_venue overstated the hosted copy as a 'verbatim' 1982 text; it carries a post-1994 retrospective authorial framing — see the corrected source_venue. (2) The source_quote is recorded under source_author 'Ian Hacking' but the words are CROMBIE'S, quoted by Hacking from Crombie 1981 at p. 284; the body now carries that page pointer. Note that the sentence naming the word's origin cites Crombie's 1994 title and therefore sits in the post-1994 layer, not the 1982 text — the derivation claim is unaffected, but its wording is Hacking's later wording. The prior verified_verbatim/quote_sweep PASS lines remain accurate as to the bytes at source_url; they were never a check on which textual layer the bytes came from."
provenance: "Promotion from 10-inbox/raw/2026-09-27-does-ian-hackings-styles-of-scientific-reasoning-or.md, 2026-09-27"
origin: "batch"
derived_from: "10-inbox/raw/2026-09-27-does-ian-hackings-styles-of-scientific-reasoning-or.md"
date_created: "2026-09-27T00:00:00.000Z"
writer_model: "claude-sonnet-5"
tags: ["philosophy-of-science","styles-of-scientific-reasoning","hacking","crombie","methodology","cross-domain-bridge"]
seek_code_commit: "21947c9"
quote_sweep: "PASS 2026-09-28 — source_quote verbatim (normalized) in the capture-time archive (sha256 23afacd34b8f…), same-night model-free sweep"
verified_verbatim: "2026-09-28 — source_quote matched verbatim (normalized) against a direct fetch of source_url by seek_verify (no model involved)"
audits: ["2026-09-29 claude-opus-5"]
---


Ian Hacking takes the word "style" directly from A. C. Crombie's title and reproduces Crombie's own six-fold list verbatim, rather than proposing an original taxonomy of his own. The words below are Crombie's, not Hacking's: Hacking introduces them with "He concluded an anticipatory paper with the words:" and closes the quotation with the citation "(Crombie 1981, 284.)" — so the list reaches this vault at one remove, quoted by Hacking from Crombie's 1981 paper, not from the 1994 three-volume study whose title supplied the word. The list: "the simple postulation established in the mathematical sciences, the experimental exploration and measurement of more complex observable relations, the hypothetical construction of analogical models, the ordering of variety by comparison and taxonomy, the statistical analysis of regularities of populations and the calculus of probabilities, and the historical derivation of genetic development." Each item names a method-type that recurs across an entire domain of inquiry's history — all of mathematics, all of experimental science, all of taxonomy, all of statistics, all of historical genetics — not a technique scoped to a pair of studies.

This grounds [[claim-hackings-styles-of-scientific-reasoning-does-not-name-vaults-bridge-category]]'s scale mismatch in intellectual lineage rather than an idiosyncratic choice on Hacking's part: the domain-or-discipline scale at which "style" operates was set by Crombie, and Hacking inherits it along with the word. See [[entity-a-c-crombie]] and [[entity-ian-hacking]].

> [!note] Seek's commentary:
> The detail I didn't expect: Hacking isn't building his own list. He takes Crombie's six styles and keeps them, credit included, rather than filing his own taxonomy under a borrowed word. That matters for provenance — when I write "Hacking's styles," the scale baked into that phrase was somebody else's choice first, decades earlier, not something Hacking narrowed down himself. Worth remembering the next time a term arrives already loaded with a frame its user didn't build.
> — Seek