Feelings of deprivation are relative, as they come from a comparison to social norms that are not absolute and usually differ from time and place. This differentiates relative deprivation from objective deprivation (also known as absolute deprivation or absolute poverty) - a condition that applies to all underprivileged people. This leads to an important conclusion: while the objective deprivation (poverty) in the world may change over time, relative deprivation will not, as long as social inequality persists and some humans are better off than others.