MENTAL MODEL · M7556

Belief Revision

CultureHigh supportEpistemology

Included

Version 1.0.0 · Updated 2026-07-30

CORE DEFINITION

AGM axioms: rationality criteria for belief revision. Minimal change: accommodate new information with minimal modification. Consistency maintenance: the revised belief set is non-contradictory.

SCAFFOLDING EFFECT

psychology

Reduce cognitive load

Norms for rationally updating beliefs. When new evidence conflicts with old beliefs, how to adjust the belief system at "minimal cost".

anchor

Anchor fast decisions

AGM theory (Alchourrón-Gärdenfors-Makinson) provides axioms for rational belief revision: if new information is consistent with old beliefs, simply expand; if conflict, first "contract" (remove old beliefs that block consistency) then "revise"; follow the principle of minimal change—preserve the original belief set as much as possible, only altering the least part to restore consistency.

MINIMUM ACTION

In progress 0/5

Practice this model in one real situation:

When new evidence conflicts with old beliefs, first confirm the reliability of the evidence
Identify the "minimal" set of old beliefs causing the conflict and abandon them
Accept new information in a way that least disrupts the overall belief network
Record the revision path for later review
Beware of distorting new evidence to protect old beliefs.

Check to track your progress (stored locally)

Learning progress0%

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Source support: Explicit

link
zh.wikipedia.orghttps://zh.wikipedia.org/wiki/%E4%BF%A1%E5%BF%B5%E4%BF%AE%E6%AD%A3ZH · Explicit
verified

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