Tradition as the genealogy of truth Hippocrates and Boerhaave between assimilation, variation and deviation.

It is a matter of fact that rarely in the history of modern medicine has a physician gained such immediate and universal fame, and rarely has his contribution to medical knowledge and teaching been so promptly and almost unanimously recognized as a fundamental and, so to speak, a foundational one, as in the case of Boerhaave. In fact, the contribution he gave to provide medicine with a 'scientific' framework, and medical teaching with solid methodological bases, proved decisive. Otherwise, his appraisal of the Ancients (and especially of Hippocrates) and his will to refer to Hippocrates as a model for medical teaching were proverbial.

The physician as teacher. Epistemic function, cognitive function and the incommensurability of errors.

In many Hippocratic writings, the writers' attention is often focused on registering and discussing medical errors. Far from being sporadic and fortuitous, these discussions represent a privileged rhetorical resource in order to produce different effects. The aims of my paper will be: 1) to determine some of the most important contexts in which errors become the object of medical discourse; 2) to distinguish, per exempla, the typologies of errors made object of discourse; 3) to give an epistemological outline which may clarify which functions these discourses have and whether these functions respond coherently to a conscious plan of medical knowledge.