the wave/particle duality is no more seen as the opposite sides of a coin. We now see it as a point in a segment [0 , 1]. It is the same with pure states. The visibility of the fringes varies between 0 and 1. In regards to measurement, We are often in the old yes/no habit: At a some point the system ceases to evolve unitarily, measurement forces it to jump. This jump is irreversible and everybody can see the same output. Cannot we go further? What happens when the macroscopic device becomes mesoscopic or has the size of few atoms? Is there a place between measurement and no measurement?