  This paper is a review of our recent work on three notorious problems of
non-relativistic quantum mechanics: realist interpretation, quantum theory of
classical properties and the problem of quantum measurement. A considerable
progress has been achieved, based on four distinct new ideas. First, objective
properties are associated with states rather than with values of observables.
Second, all classical properties are selected properties of certain high
entropy quantum states of macroscopic systems. Third, registration of a quantum
system is strongly disturbed by systems of the same type in the environment.
Fourth, detectors must be distinguished from ancillas and the states of
registered systems are partially dissipated and lost in the detectors. The
paper has two aims: a clear explanation of all new results and a coherent and
contradiction-free account of the whole quantum mechanics including all
necessary changes of its current textbook version.
