  Quantum mechanics describes successfully numerous quantum phenomena both
microscopic and macroscopic, such as superconductivity. But the controversies
about quantum mechanics, in the old days and present day, reveal fundamental
obscurity in quantum mechanics. In this work reader attention is drawn first of
all to the fact that the orthodox description of superconductivity and some
other quantum phenomena uses the realistic interpretation of the wave function
proposed by Schrodinger whereas the controversies take place until the present
about the positivistic interpretation proposed by Born. Causes and essence of
the fundamental obscurity of the Born interpretation are considered in detail
in the first part of the paper. The fundamental obscurities of the orthodox
description of superconductivity and other quantum phenomena are considered in
the end of the paper.
