 This analysis of constraints helps to explain why socialists and egalitarians have tended to claim that the poor in a capitalist society are as such unfree, or that they are less free than the rich, whereas libertarians have tended to claim that the poor in a capitalist society are no less free than the rich. Egalitarians typically (though do not always) assume a broader notion than libertarians of what counts as a constraint on freedom. Although this view does not necessarily imply what Berlin would call a positive notion of freedom, egalitarians often call their own definition a positive one, in order to convey the sense that freedom requires not merely the absence of certain social relations of prevention but the presence of abilities, or what Amartya Sen has influentially called ‘capabilities’ (Sen 1985, 1988, 1992; Nussbaum 2006, 2011). (Important exceptions to this egalitarian tendency to broaden the relevant set of constraints include those who consider poverty to indicate a lack of social freedom (see sec. 3.1, above). Steiner (1994), grounds a left-libertarian theory of justice in the idea of an equal distribution of social freedom, which he takes to imply an equal distribution of resources.)