Risk, Ambiguity and the Savage Axioms
E564105
"Risk, Ambiguity and the Savage Axioms" is a seminal 1961 paper by Daniel Ellsberg that challenges expected utility theory by demonstrating how people systematically prefer known risks over ambiguous ones, a phenomenon now known as the Ellsberg paradox.
All labels observed (1)
| Label | Occurrences |
|---|---|
| Risk, Ambiguity and the Savage Axioms canonical | 1 |
How this entity was disambiguated
This entity first appeared as the object of triple T6033456 — resolving that mention is where its identity was fixed. The disambiguator weighed these candidate entities and picked the highlighted one (or “None”, minting a new entity). This is how homonymy is resolved: the same surface form can point to different entities.
NED1
Entity disambiguation (via context triple)
gpt-5-mini-2025-08-07
Target entity: Risk, Ambiguity and the Savage Axioms Context triple: [Daniel Ellsberg, notableWork, Risk, Ambiguity and the Savage Axioms]
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A.
Models of Bounded Rationality
Models of Bounded Rationality is a collection of Herbert A. Simon’s influential works that develop the concept of bounded rationality, explaining how real-world decision-making is constrained by limited information, cognitive capacity, and time.
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B.
Risk, Uncertainty and Profit
Risk, Uncertainty and Profit is a foundational 1921 work in economics that distinguishes measurable risk from unmeasurable uncertainty and links entrepreneurial profit to bearing such uncertainty.
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C.
Allais paradox
The Allais paradox is a famous decision-making puzzle in behavioral economics that shows how people's choices under risk often violate the expected utility theory, revealing systematic inconsistencies in rational choice models.
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D.
expected utility theory (with John von Neumann)
Expected utility theory (with John von Neumann) is a foundational framework in economics and decision theory that models how rational agents make choices under uncertainty by maximizing the expected value of a utility function.
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E.
Fisherian intertemporal choice theory
Fisherian intertemporal choice theory is an economic framework, developed by Irving Fisher, that explains how rational individuals allocate consumption and savings over time to maximize lifetime utility given their income, preferences, and interest rates.
- F. None of above. chosen
- G. Unsure - the case is ambiguous/there is not enough information to decide.
NED2
Entity disambiguation (via description)
gpt-5-mini-2025-08-07
Target entity: Risk, Ambiguity and the Savage Axioms Target entity description: "Risk, Ambiguity and the Savage Axioms" is a seminal 1961 paper by Daniel Ellsberg that challenges expected utility theory by demonstrating how people systematically prefer known risks over ambiguous ones, a phenomenon now known as the Ellsberg paradox.
-
A.
Models of Bounded Rationality
Models of Bounded Rationality is a collection of Herbert A. Simon’s influential works that develop the concept of bounded rationality, explaining how real-world decision-making is constrained by limited information, cognitive capacity, and time.
-
B.
Risk, Uncertainty and Profit
Risk, Uncertainty and Profit is a foundational 1921 work in economics that distinguishes measurable risk from unmeasurable uncertainty and links entrepreneurial profit to bearing such uncertainty.
-
C.
Allais paradox
The Allais paradox is a famous decision-making puzzle in behavioral economics that shows how people's choices under risk often violate the expected utility theory, revealing systematic inconsistencies in rational choice models.
-
D.
expected utility theory (with John von Neumann)
Expected utility theory (with John von Neumann) is a foundational framework in economics and decision theory that models how rational agents make choices under uncertainty by maximizing the expected value of a utility function.
-
E.
Fisherian intertemporal choice theory
Fisherian intertemporal choice theory is an economic framework, developed by Irving Fisher, that explains how rational individuals allocate consumption and savings over time to maximize lifetime utility given their income, preferences, and interest rates.
- F. None of above. chosen
Statements (46)
| Predicate | Object |
|---|---|
| instanceOf |
academic paper
ⓘ
decision theory paper ⓘ economics paper ⓘ |
| argues |
that people treat ambiguity differently from risk
ⓘ
that subjective probabilities may be indeterminate or interval-valued ⓘ |
| author | Daniel Ellsberg NERFINISHED ⓘ |
| citedAs | Ellsberg 1961 ⓘ |
| contribution |
challenged the descriptive validity of Savage’s expected utility axioms
ⓘ
highlighted systematic ambiguity aversion in human choices ⓘ introduced the Ellsberg paradox ⓘ provided experimental-style thought experiments on ambiguity ⓘ stimulated development of non-expected utility models ⓘ |
| describes |
choices between bets with known probabilities and bets with unknown probabilities
ⓘ
thought experiments with urns containing balls of different colors ⓘ |
| examines |
behavioral violations of normative axioms
ⓘ
preferences that cannot be represented by a single expected utility function ⓘ |
| field |
behavioral economics
ⓘ
decision theory ⓘ economics ⓘ probability theory ⓘ |
| hasParadox | Ellsberg paradox NERFINISHED ⓘ |
| influenced |
behavioral economics
ⓘ
models of multiple priors ⓘ non-additive probability models ⓘ prospect theory and related behavioral models ⓘ theory of ambiguity in decision making ⓘ |
| language | English ⓘ |
| mainConcept |
Ellsberg paradox
NERFINISHED
ⓘ
Savage axioms NERFINISHED ⓘ ambiguity aversion ⓘ decision under uncertainty ⓘ expected utility theory ⓘ subjective probability ⓘ |
| publicationYear | 1961 ⓘ |
| relatedTo |
Foundations of Statistics by Leonard J. Savage
NERFINISHED
ⓘ
Knightian uncertainty ⓘ subjective expected utility theory ⓘ |
| shows |
inconsistency with Savage’s subjective expected utility theory
ⓘ
systematic preference for known risks over ambiguous risks ⓘ violations of the sure-thing principle ⓘ |
| status |
classic reference on ambiguity aversion
ⓘ
seminal work in decision theory ⓘ |
| topic |
comparisons of risky and ambiguous lotteries
ⓘ
preference for known risks over ambiguous risks ⓘ subjective probabilities not representable by a single additive measure ⓘ violations of expected utility theory ⓘ |
How these facts were elicited
The pipeline generated the facts above by prompting gpt-5.1 with this entity's name + description and the instruction below.
Instruction
You are a knowledge base construction expert. Given a subject entity and a description of it, return factual statements that you know for the subject as a JSON list of dictionaries(triples), where keys must be "subject", "predicate" and "object". The number of facts may be very high, between 25 to 50 or more, for very popular subjects. For less popular subjects, the number of facts can be very low, like 5 or 10. # Requirements - If you don't know the subject at all, return an empty list. - If the subject is not a named entity, return an empty list. - Include at least one triple where predicate is "instanceOf". - Do not get too wordy. - Separate several objects into multiple triples with one object.
Input
Subject: Risk, Ambiguity and the Savage Axioms Description of subject: "Risk, Ambiguity and the Savage Axioms" is a seminal 1961 paper by Daniel Ellsberg that challenges expected utility theory by demonstrating how people systematically prefer known risks over ambiguous ones, a phenomenon now known as the Ellsberg paradox.
Referenced by (1)
Full triples — surface form annotated when it differs from this entity's canonical label.