Epistemic Closure
Updated 2026-09-10
INTRODUCTION
English translation pending.
CORE DEFINITION
The epistemic closure principle holds that knowledge is closed under logical entailment: if you know that p, and you recognize that p entails q and accept q on that basis, then you know that q. It is a common way of extending our stock of knowledge, and it is also a key premise in skeptical arguments, since it licenses moving from ordinary knowledge to the denial of skeptical hypotheses.
SCAFFOLDING EFFECT
Reduce cognitive load
- Extend knowledge: derive new conclusions from known propositions along logical entailment. - Diagnose skepticism: check whether an argument relies on closure in order to locate its real pivot. - Detect broken links: verify that each step still counts as knowledge and flag where the chain fails.
Anchor fast decisions
Closure seems to hold because deduction transmits warrant: if a subject's epistemic position supports p, and p guarantees q, the same position supports q. The dispute is whether transmission is unconditional. Relevant alternatives theorists hold that a new proposition introduces new alternatives and so blocks closure, while lottery cases suggest that in low-probability situations we simply do not know.
MINIMUM ACTION
In progress 0/1Practice this model in one real situation:
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Source support: Explicit
- plato.stanford.eduhttps://plato.stanford.edu/entries/closure-epistemic/verified
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