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LIT-730: Episteme Symposium on Group Agency: Replies to Gaus, Cariani, Sylvan, and Briggs

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StatusActive — read 2026-10-05 (NOTE-582): in full, from the authors' copy on List's LSE pages. Worth reading as the authors' own short commentary on Group Agency (LIT-391, unread), which it quotes with page references. It says the premise-based procedure was only ever illustrative, that robust group rationality may be relaxed case by case without rescuing proposition-wise supervenience, that no accessible individualistic recipe makes group attitudes redundant, and that group agents are fit to be held responsible in their own right but should have restricted rights. Limits: replies to commentaries not in the record; the book's claims are seen only as quoted.
Tagssocial-ontology, agency, epistemology
Cited as “paper” byNOTE-582 — Episteme Symposium on Group Agency: Replies to Gaus, Cariani, Sylvan, and Briggs
Cited as “source” byTHEORY-536 — A group agent's attitudes are real and non-redundant: each group belief needs members' role-based acceptance, by assent in the group's name or by acting on it in an executive role, but that acceptance does not explain or reduce the group belief, because which members' acceptance counts, and that it plays the role of belief, is fixed only from the group-level view

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Christian List & Philip Pettit (2012), “Episteme Symposium on Group Agency: Replies to Gaus, Cariani, Sylvan, and Briggs”, Episteme 9(3):293–309 — DOI-10.1017/epi.2012.18

Key takeaways

  • The premise-based procedure is an illustration (p. 1). It “was never intended to be the only, or even the default, method”; real group agents use less mechanical methods, and the book rejects the procedure as an organising design because it fixes the premises (pp. 11–12, citing GA 60–62).
  • Rationality is classical, its means ecological (Gaus, pp. 2–3). Ecological rationality is “simply classical rationality, conditional on a particular environment”; organisational structures can suit some environments and not others.
  • Robustness can be adjusted (pp. 3–4). Universal domain and completeness may be relaxed case by case, like building codes in California and London. Even so, they say, aggregation rules satisfying proposition-wise supervenience remain “extremely limited”, so “our central findings stand”. This is asserted from the literature, not proved here.
  • Group epistemics (Cariani, pp. 5–10). Chapter 4’s results are possibility results; reliability is a pair, positive and negative, not an average; incomplete group judgments can be epistemically optimal.
  • Non-redundant realism (Sylvan, pp. 10–14). Role-based member acceptance is necessary for every group belief but does not reduce it: “it is the group belief that explains the role-based member acceptance”. No “plausible, accessible recipe” renders group agents redundant (p. 14).
  • Responsibility and rights (Briggs, pp. 14–17). Quoting the book (GA 182): “there is every reason to hold [group agents] responsible in their own right”, with restricted rights. They concede the book argues for the possibility of group agents and takes their existence “mostly … for granted” (p. 14).

Standing in the record

Filed on 2026-10-05 at the owner’s request. It is the second lawful text by the authors beside “Group Agency and Supervenience” (LIT-705), which states Part I’s formal result. These replies reach the book’s Parts II and III, design and status, through quotation, which LIT-705 does not. The book (LIT-391) stays Deferred: a reply quoting it is not a reading of it.

It adds to two accounts without being the source of either. To THEORY-127, the authors’ own statement that relaxing robustness does not rescue proposition-wise aggregation. To THEORY-139, the book’s verdict, as quoted here, that group agents are responsible in their own right, and the concession that the range of their responsibilities is barely addressed. Details are in NOTE-582.

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