  It is shown that the results of CP and T violation experiments can be
interpreted using a very general framework that does not require a Hilbert
space of states or linear operators to represent the symmetries or dynamics.
Analysis within this general framework brings out the aspects of quantum
mechanics that are essential for this interpretation. More importantly, should
quantum mechanics be eventually replaced by a new paradigm, this framework
could \emph{still} be used to establish violation of CP and T invariance from
the already known experimental results.
  This work arose as a `formal response' to a talk "Three Merry Roads to
T-Violation" by Dr. Bryan Roberts [1]. Both talks were given at a "Workshop on
Cosmology and Time" held at Penn State in April 2013, which brought together
physicists and philosophers of science.
