The results obtained confirm the Bohr approach, but highlight also the fundamental role of the space-time, obtained by Einstein, and the recent relation between time, causality and space-time . Indeed, the proof suggested points out that the conditioning of the measurements is due to the zero value of the time dimension, unless one of the system interacts with the experimental setup. Consequently, it follows how irreversibility represents a constraint in the interactions, conditioning the behaviour of correlated systems.