One of the most obvious approaches would be through the assessment of differential goods deposited in graves. But richly furnished graves may not simply be evidence of social differentiation; rather, they may be an attempt to demonstrate the importance and distinction of a family in relationship to other kindreds – a social importance that may not exist in reality. Moreover, social stratification can be based on wealth but can also be based on personal prestige and power. Therefore, it isn't always possible to assess social differences by comparing graves with goods to those without them.