> For me it's not the exchange of information that causes system to become more sharp. It's poking that system with immensely huge stick built out of billions a

> For me it's not the exchange of information that causes system to become more sharp. It's poking that system with immensely huge stick built out of billions and billions tightly and sharply interacting particles that you have to do to get that information. That's exactly what I think about Schrödinger's Cat experiment. It's often implied that the hypothetical cat may be simultaneously both alive and dead, as if there are only two possible states for the cat. There are approximately 7 x 10^27 atoms in the average human body. The figure for a cat wouldn't be much far from that I suppose. Taking that into account we can safely say that the quantum system (cat + radioactive source + poison) may actually simultaneously be in an abysmally high number of different entangled states, which may converge to, as you say, a "sharp" form.