  The problem of mirror-reflection symmetry (MRS) and time-reversal symmetry
(TRS) in our world is discussed. The opinion is expressed, that well-known
experiments on parity violation and CP-violation can be treated as signals of
some new, yet unknown, level of matter. An hypothesis, which can be used as a
base for some future model or theory is formulated. In the framework of this
hypothesis, experiments which demonstrate parity violation or CP-violation do
not contradict MRS or TRS conservation.
