Einstein, 1905: From this there ensues the following peculiar consequence. If at the points A and B of K there are stationary clocks which, viewed in the stationary system, are synchronous; and if the clock at A is moved with the velocity v along the line AB to B, then on its arrival at B the two clocks no longer synchronize, but the clock moved from A to B lags behind the other which has remained at B by 1/2 tv2/c2 (up to magnitudes of fourth and higher order), t being the time occupied in the journey from A to B. My question: Does the A clock have to be stopped (brought to rest, “stationary”) when it reaches location B? Does it make any difference? If it is stopped, does it resume running at the proper rate?