Einstein imagined moving away from a clock at the speed of light. The hands never changed position. Time is stopped. Proven in satellites.-Again proven has crept into your sentence, David-I would take corroborated, demonstrated, consistent with and no doubt other synonyms. But proven, a no-no by my book/-Regarding time in theory of relativity ... My understanding it [relativity] can be expressed without the dimension of time. Which of course is difficult for someone like me who is firmly stuck in a Euclidean universe that has a Newtonian clock ticking away.