Comparative politics is a broad field with a variety of approaches and goals. Some scholars and researchers compare contemporary political systems in order to judge which types best provide particular values: order, equality, freedom, or economic security and well-being for their citizens. Others suggest that the main purpose of comparative politics is to provide an understanding of how and why different societies develop different kinds of political institutions. Still others use comparative politics as a way of discovering general laws and theories that will explain human political behavior and its variability.