In this paper we deal with the problem of stating what an analogy relation is, according it is usually used on teaching natural sciences. According our proposal, two situations are said to be analogous if their representations includes isomorphical subsets. We analyze the elements that can be inv..

Scientific progress is one of the most popular topics in philosophy of science. Currently, the area offers a range of models to choose scientific progress, when addressing the specific processes that occurred in a particular discipline of science. In this article we analyze the notion of theoretical change in biochemistry, but translatable to biology and biomedical sciences by making use of the pull of theories, under one of the prospects of scientific progress, P. Kitcher, which we believe is one of (...) the best to shed clarity to the discussion of the case. (shrink)

The present paper deals with the notion of complementarity associated with Salmon’s proposal of peaceful coexistence between scientific explanation models. The relation between the coexistence of such models and theoretical reduction is studied. Finally a way of understanding peaceful coexistence is proposed which does not rely on pragmatic factors and also allows us to return to the use of the explanatory capacity of theories as a value of relevance in the rational choice between scientific theories.

Las fallas predictivas obligan a alguna modificación en las teorías, lo cual, en muchos casos, consiste en detectar algún factor que ha interferido en el experimento. Podría ser que se tratara de un factor de un tipo ya reconocido por la teoría o bien que fuera necesario proponer un factor de un tipo no conocido hasta el momento. En este trabajo proponemos un ordenamiento de los cambios en las teorías de acuerdo con el tipo de factor propuesto en la modificación. (...) Este ordenamiento puede utilizarse para distinguir los cambios en ciencia normal de los cambios revolucionarios. Nuestra propuesta se realiza sobre la base de que una teoría admite únicamente un número finito de tipos de factores. /// The failure of a prediction forces some modification of the theory, which in many cases means locating some factor that interfered in the experiment. A factor may be found of a type already recognized by the theory. Or it may be the case that it becomes necessary to propose an as yet unknown factor. Here we suggest an ordering of theory changes according to the type of factor proposed. The ordering may be used to distinguish normal change from revolutionary change. Our proposal is based on the thesis that a theory admits only a finite number of types of factors. (shrink)