epistemic indeterminacy

Compiled with AI assistance and selectively reviewed. Please consult the cited passages; the books remain the authoritative source. About this companion

Editorial synthesis · provisional

Definition

Epistemic indeterminacy is a principled limit on what can be known or predicted arising from observation, measurement or cognition. Such a limit can obtain in a lawful world without establishing that reality itself has several unsettled outcomes. The corpus distinguishes it from temporary technical ignorance, semantic underdetermination and formal undecidability, while allowing these different limits to interact within particular practices of inquiry.

Explanation

The taxonomy locates the limit in the conditions of access or prediction. Its Kant discussion adds that cognitive boundaries can have lawful necessity rather than being arbitrary failings. PB’s shorter contrast keeps not knowing an outcome separate from there being no outcome yet to know; the distinction remains useful even where both features occur in one case.

The Bohr passage gives a specifically contextual example: mutually exclusive experimental arrangements supply complementary evidence rather than one complete classical picture. Each well-defined arrangement can nevertheless yield reproducible statistical distributions and publicly communicable results. This is a source-attributed epistemic-structural account, not a claim that quantum restriction is only poor technology.

The emergence discussion separately describes practical predictive limits from nonlinear dynamics and combinatorial complexity. Those limits illustrate epistemic irreducibility without settling ontological non-fixation. PB makes the same point about stochastic notation: a probabilistic map can describe either coarse-grained determinism or an open world, so the model alone does not determine which interpretation is warranted.

Scope and attribution

Retain the taxonomy’s principled limit while separating model underdetermination and practical unpredictability.

PB — The Possible Book

Not knowing differs from an unsettled world, and stochastic notation does not settle the difference.

Occurrence locators: 94, 151.

RB1 — The Real Book, Volume I: The Possible Is Real

Principled access limits, Bohr’s contextual account and practical predictive irreducibility remain distinct examples.

Occurrence locators: 120, 121, 123, 124, 125, 127, 156, 199.

Background used in the editorial explanation

Named theories and mechanisms are distinguished from neighboring background, homonyms and the author’s own synthesis. Reproduced AI passages retain their separate voice.