One commonly quoted example of speedy things ‘living longer’ is the accelerated Muon. If you accelerate a beam of muons in a circular synchrotron and accelerate them to .99c then the muon lifetime is increased by a factor of 100. Quite a significat value and not one that could be fobbed off as experimental error. As I see it, you may be forgiven if you argued that the accelerated muons are really living longer compared to the stationary twin one you are keeping metaphorocally in your pocket. I can't help thinking it is a relative thing and really an illusion caused by the limitations of the data carrier. This time, leave one of the twin muons on the laboratory bench and start accelerating the other in the synchrotron. Instead of observing the accelerating muon from the laboratory floor, get in the synchrotron and accelerate yourself to .5c allowing the other muon to increase its velocity to .99c as before. In effect, both muons are moving relative to you at more or less .5c . You will see that they die together, am I right or am I right?