1+0 is not equal to 1: The Unreasonable Aspect of Logic

The topic of the thesis concerns what I call the double aspect of the logical capacity. Double aspect that I will try to deal with not from the point of view of a professional logician, nor from a metaphysical point of view and even less from a psychoanalytic point of view, but simply from the point of view of a doctor who, every day, during his profession, is in contact with patients' problems...