THE SELF-CONSISTENCY OF THE KINEMATICS OF SPECIAL RELATIVITY, IV

Further support is provided for the self-consistency of the kinematics of the special theory of relativity (KSTR) (I) by considering Einstei n's formula for the general Doppler effect; (2) by reconsidering some arguments by Dingle and by McCausland; (3) by answering questions from a referee who thought McCausland had an absolute physical concept in mind, but which I claim is either metaphysical or Newtonian, or else i ncorrect when interpreted operationally. A swings-and-roundabouts theo rem is proved for the round-trip clack paradox. It is tentatively sugg ested that parity breakdown might be caused by the weak microwave cosm ic radiation and that this could be experimentally tested. Some prehis tory is recalled concerning the branching universe theory of H.J. Ever ett.