Abstract  Science is a social field of forces, struggles, and relationships that is defined at every moment by the relations of power among the protagonists. Scientific choices are guided by taken-for-granted assumptions, interactive with practices, as to what constitutes real and important problems, valid methods, and authentic knowledge. Such choices also are shaped by the social capital controlled by various positions and stances within the field. This complex and dynamic representation thus simultaneously rejects both the absolutist-idealist conception of the immanent development of science and the historicist relativism of those who consider science as purely a conventional social construct. The strategies used in science are at once social and intellectual; for example, strategies that are founded on implicit agreement with the established scientific order are thereby in affinity with the positions of power within the field itself. In established scientific fields of high autonomy, revolutions no longer are necessarily at the same time political ruptures but rather are generated within the field themselves: the field becomes the site of a permanent revolution. Under certain conditions, then, strategies used in struggles for symbolic power transcend themselves as they are subjected to the crisscrossing censorship that represents the constitutive reason of the field. The necessary and sufficient condition for this critical correction is a social organization such that each participant can realize specific interest only by mobilizing all the scientific resources available for overcoming the obstacles shared by all his or her competitors. Thus, the type of analysis here illustrated does not lead to reductive bias or sociologism that would undermine its own foundations. Rather it points to a comprehensive and reflexive objectivism that opens up a liberating collective self-analysis.