« on: 30/10/2023 19:51:45 »
Halc, as soon as a discussion starts to get relevant and productive, you run and hide, and try to make any information that you don't agree with disappear. The time dilation equation (TDE) is one of the most important results in all of special relativity, but you do everything you can do to avoid discussing it. Special relativity says that the TDE specifies what ANY particular inertial observer MUST conclude about the rate of ageing (compared to their own rate of ageing) of anyone moving with respect to them. In particular, it says that the traveling twin (he) MUST use the TDE to determine how much SLOWER the home twin is ageing compared to his own rate of ageing whenever he is inertial. And likewise, SHE must use the TDE to determine how much slower HE is ageing than she is, according to HER, during her entire life (since she is ALWAYS inertial). They each MUST conclude that, whenever they are inertial, the other twin is ageing gamma times slower than their own rate of ageing ... they have no other choice: their own experimental measurements CONFIRM the correctness of the TDE. Whenever SHE is unaccelerated (which is ALL the time), she says he is ageing gamma times slower than she is, and that is a totally REAL conclusion for her. And whenever HE is unaccelerated (which is ALL the time EXCEPT for the one instant where he is reversing his velocity), he MUST conclude that she is ageing gamma times slower than he is. And that is a totally REAL conclusion for him. And for HIM, those results then require that, according to HIM, SHE instantaneously gets older during HIS instantaneous turnaround. That HAS to happen ... otherwise he won't agree with their respective ages at the reunion, and they obviously MUST agree at the reunion (when they are eye-to-eye).