WHICH NATURAL PROCESSES HAVE THE SPECIAL STATUS OF MEASUREMENTS

We assume, ill the first place, that two kinds of processes occur in n ature: the strictly continuous and causal ones, which are governed by the Schrodinger equation and those implying discontinuities, which are ruled hy probability laws. In the second place, we adopt a postulate ensuring rile statistical sense of conservation laws. These hypotheses allow us to state a rule telling, in principle, in which situations a nd to which vectors the system's state can collapse, and which are the corresponding probabilities. The way our proposed approach works is i llustrated with some examples and with the analysis of the measurement problem. We obtain the exponential decay lair. A comparison with othe r attempts to solve the measurement problem is performed.