EINSTEIN'S MOUSE, SCHROEDINGER'S CAT AND WIGNER'S FRIEND: THE OPENING OF AN "INNER" REALITY
The impossibility of rejecting the concept of complex-valued probability amplitude, for which there exists a deterministic dynamic equation, and restricting the description of a system to observed quantities alone means that in quantum mechanics, in contrast to what we find in classical physics, we are forced to introduce still another, additional dimension of being, additional with respect to the probabilistic space of observation results described in the language of real numbers - an “inner' dimension which cannot be touched directly and of which, therefore, it is impossible to have complete knowledge. This compels us to raise the question of the need to adopt a new ontology fundamentally different from the former, classical one and reminiscent of the spaceless reality of Leibniz's monads possessing an “inner,” living, “subjective” dimension of being manifesting itself outwardly in one way or another depending on what and how we inquire.