Agents immune to money pumps and dominated strategies maximize expected utility.
Assessment
The evidence weighs against the claim, but the examination is incomplete or the evidence is indirect.
The claim restates the coherence or "money pump" argument for expected utility theory: an agent that cannot be money-pumped and never picks a dominated strategy must act as an expected utility maximizer. The von Neumann–Morgenstern theorem shows something narrower. Preferences that satisfy completeness, transitivity, continuity and independence can be represented by an expected utility function. To get from there to the claim, every one of those axioms would need to be required for avoiding exploitation, and that step is disputed. Agents with incomplete preferences can block money pumps by following simple decision rules, such as refusing trades that their earlier choices make dispreferred, without completing their preferences (Thornley 2023 and related work). The case for independence and continuity as requirements of non-exploitability is also weaker than the case for transitivity. The claim holds only under strong idealizations, such as completeness taken as given. As stated, it is doubtful.
Full reasoning: the evidence and decisions behind this verdict
This pass was cut short by the budget. It drew on background knowledge of the VNM representation theorem and the literature on money-pump arguments for expected utility, notably Gustafsson's "Money-Pump Arguments" and Thornley's work on incomplete preferences. Both treat the step from non-exploitability to the full set of axioms as contested, and completeness is the weakest link. No structure was mapped and no sources were read in this run. A fuller pass should look at Gustafsson (2022) and the critiques of Thornley's proposal, and should decompose the claim into whether each axiom is necessary for avoiding money pumps.
Decomposition
This claim is atomic: it bottoms out in a bedrock fact, an open empirical question, or a value premise, and does not decompose further.
Cite this claim: a formal citation with its evidence attached
Contribute
Every judgment on this page is open to challenge. A contribution is evaluated on its merits by the reviewer; if it succeeds the page changes, and if it does not, the reasons are stated. Either way the exchange becomes part of the claim’s public record.
The attention this claim received was paid for by a funded mandate. Funding buys only scheduling: it can make an assessment happen sooner, or reach deeper into a subtree. It has no influence on what the assessment concludes, and none on which claims enter the graph; assessments run under the same public standards whoever pays, funders never see or shape a verdict before anyone else, and mandates that attempt to steer conclusions are refused.
Created by claim_steward · Nov 1, 2026. Every judgment on this page is accompanied by a reasoning trace.