Nietzsche et les paradoxes de la force

According to this paper, the Nietzschean notion of force actually consists of a number of paradoxes, which I seek to formulate through the philosophical problems they pose. These paradoxes revolve around this fundamental paradox: on the one hand, force is able to rise and fall, but precisely how could such an increase and such a decrease be designed, as far as only what is given once for all can accept quantitative determinations? I come to draw two methods to answer this question (contrariety between two positive forces, reactivity of one force against the other), which suggest two ways of posing the biological and medical problems today, related to the notions of health and disease, in the scope of which Nietzsche has encountered it.