  The paper reviews and discusses four ideas scattered in previous papers of
the author. First, objective properties of quantum systems are not associated
with observables but are defined by preparations. Second, measurable results of
classical theories are not sharp. All such results can be obtained as
high-entropy limits of quantum mechanics. Third, a careful study of exchange
symmetry requires a modification of the theory of measurement. Fourth, screens
and detectors are closely associated with state reduction. A new, rather
improved understanding of quantum mechanics is achieved without any deep
changes of the theory itself. In the framework of a model approach to the
philosophy of science, the RCU interpretation is developed step by step by
adding specific supplementary hypotheses to the Minimum Interpretation of
quantum mechanics.
