  Frauchiger and Renner recently cast doubt on the universal applicability of
Quantum Mechanics [1]. In the following, it is pointed out that their
conclusion of one of three common-sense conditions, demanded for Quantum
Mechanics, being inevitably and permanently violated is not inevitable; there
is a way out. Here, it is argued for fully accepting encompassing
complementarity and for a basic conceptualization of quantum mechanics, in
which different aspects are exhibited under different circumstances. The
reported result is taken as an indication of a fundamental arrow of time
pointing in the direction from the quantum --> classical domain. With the
origin of thermodynamic time at that interface, its unrestricted applicability
in isolated quantum systems is questioned. The bold proposal is that TIME as we
know it just does not exist at the quantum level. Time instead commences
together with causality at all interfaces to the classic domain whenever a
minimum amount of energy is transferred in an uncontrolled manner, i.e.,
without well-balanced compensation. Insisting on fully comprehensive
self-consistency opens new perspectives on (retro-)causality and also on an
inflation phase at the beginnings of our universe.
