Crombie and Koyré, philosophers and historians of sience, argue strongly about the possibility of continuity or discontinuity between the medieval and modern sciences, questioning fundamental aspects of scientific methodology in these two historic periods, generating an impasse regarding the history location of Scientific Revolution. Allied to this historic discussion about continuity or discontinuity, are the epistemological aspects of internalism and externalism in the history of science, where it discusses whether scientific theories, as well as the construction of own scientific method are or not produced by foreign elements to them (political, economic aspects etc.). Crombie suggests that scientific revolution is the result of a new methodological concept (experimental method) that arose in the 13th century, by Robert Grosseteste and that Galileo and modern scientists were heirs of this new methodological conception, but taking it to the epistemological perfection. Koyré disagrees with this crombian view pointing to metaphysical aspect of the modern thought, which would be the construction of a new conception of reality reflected in the new scientific methodology.