The concept of marginal utility strictly requires a cardinal utility function

the verdict

REFUTED

the evidence says no

Recorded sources

0 sources for · 4 against

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AS REPORTEDno primary record reached; this is what the reporting says

Economic theory and modern research demonstrate that the concept of marginal utility does not strictly require a cardinal utility function, as it can be formulated using ordinal utility approaches.

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Evidence against · 4

Wikipedia: Marginal utility

Recorded source metadata

Wikipedia: Marginal utility. Wikipedia. https://en.wikipedia.org/wiki/Marginal_utility

Reference article covering this claim directly

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More against · 3

en.wikipedia.org: Cardinal utility

Recorded source metadata

en.wikipedia.org: Cardinal utility. en.wikipedia.org. https://en.wikipedia.org/wiki/Cardinal_utility

Economists proved that under mild conditions ordinal utilities imply cardinal utilities, showing it is not strictly required as a baseline limitation.

Source citation format

doi.org: Mathematical Proof of the Ordinal Marginal Preference Theory Under the Fixed Exchange Conditions

Recorded source metadata

doi.org: Mathematical Proof of the Ordinal Marginal Preference Theory Under the Fixed Exchange Conditions. doi.org. https://doi.org/10.1142/s1793005726500225

It mentions the development of an ordinal marginal utility approach, refuting that marginal utility strictly requires cardinal utility.

Source citation format

doi.org: The Austrian Theory of the Marginal Use And of Ordinal Marginal Utility

Recorded source metadata

doi.org: The Austrian Theory of the Marginal Use And of Ordinal Marginal Utility. doi.org. https://doi.org/10.3386/w0170

States explicitly that the concept of marginal utility is not dependent on cardinal utility and is consistent with ordinal utility.

Source citation format

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first checked01 Aug 2026

judged → REFUTED · 001 Aug 2026

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