Our way of apprehending the reality or of imagining it links itself with a basic underlying supposition epistemológico: the theory guides the practice. The second supposition contributed by the epistemologías constructivistas, was of clarifying ourselves in that the in force theories exactly are buildings designed and constructed also by the scientific dominant community or the tradition of present investigation. The one who furthermore was reinforcing the joint between "community" and "paradigm" was Kuhn, showing us the rationality of the choices (or according to his detractors, the lack of rationality in the same ones), fell like: what is investigated and of what way. Our supposed terceer relates to the development of a change of conception of the science that has come up to us under such names as: " Theory of the Chaos ", " Theory of the complex systems " or " Paradigm of the Complexity ". Such a modification should mean for fewer two things: 1-Identification of theories or theoretical new terms linked to processes or done to investigating, (an example would be the multiculturalism). 2-The joint between theory and practice put in viegencia necessarily inside the processes of institutionalization (scientific community or tradition of investigation)
