The knowledge of social sciences rely on different beliefs and philosophical that underlie the Statute of disciplines and perspectives that distinguish the great epistemological, theoretical, methodological, and even technical options: thus, for example, empiricists traditions mark the emphasis in the description of the phenomena and its measurable dimension; the positivists in the establishment of universal laws; the neopositivistas in the formation of theoretical logical deductive systems or theories dense in inductions and inferences of verifiable facts and stochastic laws; the pragmatists in the technical and instrumental dimension; the neokantianas idealists in understanding historical hermeneutics; the phenomenological and existentialists on the social frame views from the world of life; the Marxist historical and material configuration of the class struggle.