Discussing the implications of a paradigm change in science, Allen et al. (2001) said: “A paradigm change modifies protocols, vocabulary or tacit agreements not to ask certain questions” (p. 480). If we agree with this brilliant definition, and therefore if we accept that a scientific paradigm is “a tacit agreement not to ask certain questions,” the next step is to find out why certain questions are forbidden. In general, the questions that cannot be asked from within a scientific paradigm are those challenging the basic assumptions adopted in the foundations of the relative disciplinary scientific knowledge