claims#plato-virtue-teachability-staged-twice

Plato stages "is virtue teachable?" twice with non-converging machinery (Protagoras vs Meno), both ending aporetic because what virtue is is never fixed

ID: plato-virtue-teachability-staged-twice Title: Plato stages "is virtue teachable?" twice with non-converging machinery (Protagoras vs Meno), both ending aporetic because what virtue is is never fixed Status: supported Confidence: medium Claim type: interpretive / structural-parallel Created: 2026-06-21 Updated: 2026-08-18 Sources: plato-protagoras, plato-meno, plato-euthydemus Wiki homes: socratic-intellectualism, plato-protagoras, plato-meno

Claim

Plato poses the question "can virtue be taught?" in two dialogues with non-converging machinery and reaches aporia both times. The Protagoras answers via intellectualism (virtue is knowledge → teachable) plus the hedonic measuring-art; the Meno answers via recollection plus, at its close, virtue as god-given (theia moira), "a gift from the gods which is not accompanied by understanding" (100b). Both end unresolved because the prior question — what virtue is — is never settled. The teachability question is shown to be parasitic on the unanswered identity/unity question, and the Protagoras dramatizes this by having Socrates and Protagoras swap positions.

Evidence

  • plato-protagoras — the opening doubt (319a–320b), the intellectualist drive to virtue-as-knowledge, and the explicit position-swap plus the closing reopening of "what virtue is" (361a–c). Extraction-anchored (.extraction-plato-protagoras.md); the forward link to the Meno is J.M.C.'s editorial cross-reference, not a dialogue-internal invocation.
  • plato-meno — recollection (81a–86b) and the closing theia moira: "a gift from the gods which is not accompanied by understanding" (100b; the 99c variant reads "without any understanding"); the page's existing sources. [Re-quoted 2026-08-18 (OPS-020): the prior marked string "without understanding" is a condensation — that exact string occurs in the Meno only at 88b, in the goods-without-understanding argument, a different context; the upstream extraction-note copies corrected. Stephanus locators only: a maintainer fix to the Plato raw is pending git transport from the other machine, so raw line numbers verified today (25867/25859/25628) are cited in the digest, not here.]
  • plato-euthydemus — the teachability question raised and deferred in the protreptic: "only if wisdom can be taught … [t]his point still remains" (282c; the ellipsis crosses a sentence boundary — the source's "This" is sentence-initial). Extraction-anchored (.extraction-plato-euthydemus.md).

Counterpressure / Limits

  • The two may be complementary stages of one inquiry rather than non-converging rivals (Cooper's anti-developmentalism cautions against reading a doctrinal change).
  • "Aporetic both times" understates the Meno's positive residue (the hypothetical method; recollection as a working result), so the parallel may flatten a real asymmetry between the dialogues.

Payoff

Reframes the teachability question as downstream of the "what is virtue / one-or-many?" question — so the two dialogues' shared failure is diagnostic, not redundant: Plato shows twice that you cannot decide whether virtue is teachable until you have decided what it is. Visible only by reading the Protagoras and Meno against each other.

Status History

  • 2026-06-21 — created at candidate (ingest Wave 3). Contestable (complementary-stages vs non-converging; Meno's positive residue); both dialogues extraction-anchored; J.M.C. licenses the link.
  • 2026-06-22 — Updated (ingest Wave 4): added the Euthydemus as a third dialogue that raises and defers teachability (282c), reinforcing that the question stays parasitic on the unanswered "what is virtue?".
  • 2026-06-23 — evidence wording corrected (PR #74 Codex review): the Meno link is J.M.C.'s editorial cross-reference, not a 361c dialogue-internal deferral; the structural-comparison thesis is unchanged.
  • 2026-06-23 — promoted candidate→supported in audit v1.9 Phase 8 (maintainer-authorized; durable supported HALT cleared): the strongest-anchored claim of the cohort — Protagoras 319a–d/361a + Meno 81a–86b/98c + Euthydemus 282c, three distinct dialogues all extraction-verified (the Protagoras note line 161 pre-flagged this exact claim). 5-test: distinctive payoff (the teachability question staged twice as parasitic on the unanswered "what is virtue?") survives the complementary-stages counter; confidence medium holds.
  • 2026-06-21 — status: created as candidate; (lifecycle backfill 2026-07-11)
  • 2026-06-23 — status: candidate -> supported; (lifecycle backfill 2026-07-11)
  • 2026-08-18 — OPS-020 supported-layer re-verification, status retained at supported: all three bullets verified against the raw at Stephanus level; the condensed "without understanding" re-quoted per the 100b close (the exact string occurs only at 88b, different context; upstream Meno extraction copies corrected); the Euthydemus ellipsis's sentence-boundary case-change marked. Raw line numbers deliberately omitted from the entry — a maintainer raw-file fix is pending git transport from the Windows machine; Stephanus anchors are edition-stable. Digest: wiki/.audit/reverify-supported-2026-08-18.md.

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