Preference Logic
Updated 2026-09-10
INTRODUCTION
English translation pending.
CORE DEFINITION
The concept of preference spans many fields of research and generates several perspectives. Preference logic is devoted to reasoning about preferences when comparing objects, situations, and actions, examining their formal properties and surveying the main developments in the area. It distinguishes the level of facts from the level of reasons and priorities, which explains how preferences change with belief.
SCAFFOLDING EFFECT
Reduce cognitive load
- Order preferences: turn vague likes and dislikes into a comparable priority sequence. - Layer reasons: separate the factual level from the level of reasons to see why preference shifts with belief. - Set priorities: when goals conflict across dimensions, reorder them by priority.
Anchor fast decisions
Preference is formalized as an ordering over possible worlds: one world ranks above another when it is more desired given the available information. Logic lifts the ordering from objects to propositions through preference lifting. A two-level structure separates the factual level from reasons and priorities, so changing priorities rearranges the preference order and explains how preference responds to belief update.
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/logic-preference/verified
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