The modern philosophy of science has not succeeded in defining conclusively what the scientific method consists in. On the contrary, scientific practice seems to consist in a methodological pluralism, a definition that connects with essential fragments of John Dewey's Logic, the Theory of Inquiry. For Dewey, even the forms of logic emerge from the problems defined in indeterminate situations. A historical example was the introduction of the notion of complementarity in physics, which allowed the interpretation of two confusingly paradoxical experiments (...) in a coherent way. Dewey's thought demonstrates its relevance by helping us to define the pattern of inquiry. Methodological pluralism and the dependence of logic on research problems is not something that will happen, it is something that has happened and does happen in scientific practices. (shrink)