A more precise historical analysis reveals a quite different principle of adjustment beyond these adjustments: it bears jointly on the type of objects to he known, on the grid that makes it appear, isolates it, and carves up the elements relevant to a possible epistemic knowledge (savoir), on the position that the subject must occupy in order to map them, on the instrumental mediations that enables it to grasp them, on the modalities of registration and memory that it must put into operation, and on the forms of conceptualization that it must practise and that qualify it as a subject of legitimate knowledge.