Simple. the fact is I should be allowed to simply for thought experimental purposes stipulate it. But people have resisted that. I should be able to theoretically claim using particle entanglement to in some fashion control the clocks but since we have not yet achieved mastering actually using the instantaneous nature of particle entanglement, you (meaning this board) would not allow that either. I should be able to establish a light control system and precalculate travel time at specified velocities and systemmatically transmit a signal that would arrive so as to achieve an actual simultaneous stopping of clocks per clock "A" the master control clock. But due to the invariance of light factor, Lorentz Contraction and Velocity Addition considerations it becomes far to complex to compute such a function and to argue all the variable points. So that leaves the process of precalculating, assuming relativity to be valid, the onboard times with time dilation considered such that preset timers will shut down the clocks. Now that admittedly is stupid. (and a stroke of genius at the same time if I must say so for myself, since I wouldn't expect others here to conclude that Please Register or Log in to view the hidden image!) We are presetting the clocks control timer to cause it to stop at the time we want to show that time dilation would have it produce if it was somehow stopped "Simultaneous' and "Instantly" with clock "A". By doing so overcomes the arguements which have been disengeniously used to preclude analyzing the Theory of Relativity as to the validity of time-dilation for linear velocity. One can correctly state that by doing so we cannot actually be testing time dilation. But to take that position one is also stating that if the accumulated time is not correct then Relativity is flawed. Further that if the clocks do not actually stop simutaneously and instantly per clock "A", then relativity is also flawed. The test was designed to test the mathematics and not the physical time change in clocks. So this is a very valid approach. What this tatic does is pave the way to actually look at what numbers and physical conditions in real time, Relativity places on physical clocks in reality. Which was the purpose of the test in the first instance. Clock "A" the master contol clock on earth. Normally maybe. But not in this case. Simultaneity has been eliminated by the use of precalculated relavistic values to control the clocks. If the clocks do not shut down "Simultaneously" and "Instantaneously" with clock "A" then Relativity has failed. So make up your mind. Do clocks in such a situation stop per clock "A" Simultaneously and instantly according to SRT? Who said anything about hard? It simply is not addressing the conditions of the tests and/or data from the test. We don't need lessons in other claims of relativity but only to analyze the consequences and validity of this test.