class, inevitably resulting in injustice and eventually revolution. Although merit matters to some degree in many societies, research shows that the distribution of resources in societies often follows hierarchical social categorizations of persons to a degree too significant to warrant calling these societies "meritocratic", since even exceptional intelligence, talent, or other forms of merit may not be compensatory for the social disadvantages people face. In many cases, social inequality is linked to racial and ethnic inequality, gender inequality, and other forms of social status, and these forms can be related to corruption. The most common metric for comparing social inequality in different nations is the Gini coefficient, which measures the concentration of wealth and income in a nation from 0 (evenly distributed wealth and income) to 1 (one person has all wealth and income). Two nations may have identical Gini coefficients but dramatically different economic (output) and/or quality of life, so the Gini coefficient must be contextualized for meaningful comparisons to be made. Overview Social inequality is found in almost every society. Social inequality is shaped by a range of structural factors, such as geographical location or citizenship status, and are often underpinned by cultural discourses and identities defining, for example, whether the poor are 'deserving' or 'undeserving'. By understanding the process of social inequality it rises the importance of how society values both genders, and in relation to that it identifies the significant aspects of how biases become presented within society. In simple societies, those that have few social roles and statuses occupied by its members, social inequality may be very low. In tribal societies, for example, a tribal head or chieftain may hold some privileges, use some tools, or wear marks of office to which others do not have access, but the daily life of the chieftain is very much like the daily life of any other tribal member. Anthropologists identify such highly egalitarian cultures as "kinship-oriented", which appear to value social harmony more than wealth or status. These cultures are contrasted with materially oriented cultures in which status and wealth are prized and competition and conflict are common. Kinship-oriented cultures may actively work to prevent social hierarchies from developing because they believe that could lead to conflict and instability. In today's world, there is great significance on the importance of our population lives and in what terms this becomes complex than simple societies. As social complexity increases,