CHOICE FUNCTIONS: RATIONALITY RE-EXAMINED

摘要

On analyzing the problem that arises whenever the set of maximal elements is large, and a selection is then required (sett Peris & Subiza 1998), we realize that logical ways of selecting among maximals violate the classical notion and axioms of rationality. We arrive at the same conclusion if we analyze solutions to the problem of choosing form a tournament (where maximal elements do not necessarily exist). So, in our opinion the nation of rationality must be discussed, not only in the traditional sense of external conditions (Sen 1993), but in terms of the internal information provided by the binary relation.