Functionalism provides a normative definition of crime and deviance as actions that violate social norms. It views society as based on consensus around shared core values. Crime is seen as functional for defining boundaries and reinforcing social bonds, and as inevitable because not everyone will fully commit to social norms. However, functionalism does not fully explain individual motivations for crime or issues of power in society. It influenced Robert Merton's strain theory, which argues crime stems from a disjunction between cultural goals like wealth and the legitimate means to achieve them.