  The present discussion rises a number of the questions. For example, is
rotational coherence of large molecules necessarily destroyed in the
conventionally statistical limit of structureless non-selective continuum (for
fixed total spin and parity values) under the conditions of complete
intramolecular energy redistribution and vibrational dephasing in the regime of
strong ro-vibrational coupling? For the slow cross-symmetry phase relaxation,
quantum coherent superpositions of a large number of complex configurations
with, e.g., many different total angular momenta produce image of a rotation of
macroscopic object with classically fixed (single) total angular momentum.
Suppose that the quantum coherent superpositions involving a very large number
of different good quantum numbers play a role, in a hidden form, in a formation
of macroscopic world. Then why these quantum superpositions are so stable
against quick aging/decay of ordered complex structures preventing or slowing
down tendencies towards uniform occupation of the available phase space as
prescribed by the random matrix theory? And what kind of complex macroscopic
phenomena may reveal traces of partially coherent quantum superpositions
involving a huge number of quantum-mechanically different integrals of motion
behind of what is referred to as conservation laws in classical physics
employed for the description of the macroscopic world?
