  Quantum statistics originate from the physics of state preparation. It is
therefore wrong to think of quantum states as fundamental. In fact, quantum
states are merely summaries of dynamical processes that randomize the
properties of the system by drawing on the inexhaustible reservoir of quantum
fluctuations provided by the physical tools used to control the quantum system.
The mathematical form of the "state vector" is actually an expression of the
laws of causality which describe the relations between physical properties in
terms of the action of transformations. These laws of causality directly
associate the macroscopic effects of a physical property in an interaction with
the environment with dynamical changes to the system caused by the microscopic
properties of that environment.
