We shall see that both assertions are inexact, and that the decisive point of quantum mechanics consists in the fact that it gives up the 'objectifiability' of natural processes.Reason wills that this shall be recognised as a valid principle, and it does so as practical reason: and it is enabled by means of this postulate a priori to enlarge its range of activity in practice.his postulate may be called "a permissive law" of the practical reason, as giving us a special title which we could not evolve out of the mere conceptions of right generally.