Arrow’s Impossibility Theorem: Can We Hit a Societal Bullseye?
Many students have expressed discontent with our current voting system, especially as it relates to the ideas of “choosing between two bad options” or “wasting your vote” on a third candidate. Many articles, bills, and petitions have called for electoral reform, along with celebrities such as Lady Gaga. In this article I will go over the economic idea of a social choice rule, or mechanism which describes how we can move from individual preferences to group preferences, or social preferences. For a primer on the economic idea of preferences, see last week’s post, Accounting for Taste: Ice Cream Preferences. One of the best articles Continue reading Arrow’s Impossibility Theorem: Can We Hit a Societal Bullseye?