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the claim

Two utility functions with the same marginal rate of substitution represent the same preferences.

the verdict
COMMON KNOWLEDGE
Legacy classification; evidence review pending
Recorded sources
no sources on either side

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Is it true that two utility functions with the same marginal rate of substitution represent the same preferences?

This is a standard microeconomic definition regarding ordinal utility theory where indifference curves represent identical preference orderings; no citation is needed.

Verdict: COMMON KNOWLEDGE · 0 sources for, 0 against · Last checked

The analysis

The claim states a fundamental definition in consumer choice theory: if two utility functions generate the same marginal rate of substitution everywhere (i.e., identical indifference curves), they represent the exact same ordinal preferences (related by a monotonic transformation). This is a textbook mathematical property and foundational knowledge in economics, rendering external empirical citations unnecessary.

What does the evidence say?

The claim states a fundamental definition in consumer choice theory: if two utility functions generate the same marginal rate of substitution everywhere (i.e., identical indifference curves), they represent the exact same ordinal preferences (related by a monotonic transformation). This is a textbook mathematical property and foundational knowledge in economics, rendering external empirical citations unnecessary.

Receipt History
first checked05 Aug 2026
judged → COMMON KNOWLEDGE · 9505 Aug 2026
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