Japan Society for the Promotion of Science:Grants-in-Aid for Scientific Research
Date (from‐to) : 2011 -2012
Author : SAITO Nao
The purpose of this research is to verify negative implication of Arrow's general impossibility theorem in the theory of liberal democracy. Also, it is to protect liberal democracy from the theorem.
The conclusion of this research is as follow; Arrow's theorem denies the possibility of usual democratic decision process like vote. Also, the theorem denies the possibility of decision process accompanied by a long-term commitment like social contract. However, social contract can be protected from Arrow's theorem both normatively and mathematically. This social contract, not the vote, bases durability of liberal democratic society.