Because CP is equivalent to T (a CP violation requires that a compensating violation of time symmetry exists in order to conserve CPT as a whole) ; and P is conserved absolutely (see previous sect.23) , C must not be totally valid outside of the electromagnetic interaction.
The only possible relevant time variant is 'shrinking confinement' or its inverse concomitant 'the expansion of space'.
A genuine CP violation would contradict the initial postulate (internalization of logic) in the same way as a genuine P violation. It forces out a second universe wherein the symmetry is restored out of logical necessity (which requires a reason for 'choosing' between two equally valid alternatives).
To solve CP within the confines of a single universe it is necessary to show that matter-antimatter is a simultaneous '2-state' in the same manner as left-right, i.e. matter is simultaneously anti-matter depending on your point of view. The symmetry can then be restored in the observer.
This is accomplished by examining T expansion/contraction with respect to confinement (D). Simply, if the positional field is compressed does the confinement expand or contract? Or, what is concomitant with greater mass? ... an expanded positional field or a contracted one?
Because this situation is ambiguous, (what is more mass? ... a denser field or a bigger field?) it can only be settled in the manner of P conservation.
By this method:
Acceleration compresses the forward section of the positional field and expands the rearward section. Associated with positional field compression is isotropic grid expansion via unit indetermimacy (vice versa for positional expansion).
Which field disposition (front or rear) represents greater mass? This is ambiguous (symmetric). It can be either, provided that only one is chosen just as was the case with parity.
T expansion now tests against C (local isotropic) expansion or contraction (i.e. which does it show a preference for) and quantifies a difference (selects + or - to put the greater mass with) but which state caused the difference (+,-) is undecidable in principle (by the Uncertainty Principle ... we can't detect it) so the symmetry is restored in the observer.
This is where the anti-matter is. We are looking at it. Some see matter while others see anti-matter. The symmetry is in the observer (or equivalently the observer particle).
CP is 'nearly' valid because the universe expands so slightly in the time of an interaction. Thus, T symmetry becomes more valid as the time interval is shortened. If there were no expansion there would be no difference between temporal directions, the neutron could not decay into unequal particle masses, nor could it display apparent handedness, and equal quantities of matter and anti-matter would exist. CPT with independently conserved C, P and T, cannot, in principle, be bundled with a developing (expanding), entropy changing (apparent) universe.