Formulated by American economist Kenneth Arrow (1921- ), impossibility theorem asserts that it is impossible to devise a constitution or voting system which offers more than two reasonable choices to the individual, or that will guarantee to produce a constant set of preferences for a group which correspond to the preferences of the individuals making up that group.
Arrow proposed that no system could be both rational and egalitarian, and that even in a simple voting system the paradox of voting will arise.
K J Arrow, Social Choice and Individual Values (New York, 1966);
Robert Abrams, Foundations of Political AnalysisNew York, 1979)
Impossibility theorem could refer to:
- Proof of impossibility, a negative proof of a theory
- Arrow’s impossibility theorem in welfare economics