What is the speed of time. I am assuming that time is constant? What I mean is that it is impossible to stop time as time is a result of things changing. Or maybe changing things is a result of time. If you 'really' think about it, time is a word to describe a concept, but that concept is built on top of an underlying notion. Any theory of everything needs to exist in a framework which is never ending. I mean before going into numbers a 'puesdo' expression of the notion needs to be agreed. The theory of everything question is really 'what is reality'. From a physics perspective reality is consists of: Time Space Movement The above 3 are brought together by a point or mass to describle the motion of 'reality'. Modern physics is dogmatised by the wonderfully complex 'Movement' aspect but it has not really started on the 'Time' or 'Space' aspects. What I mean is that physics tends to take the concepts of 'Time' and 'Space' for granted in favour of their combined effect, 'Movement'. To reiterate my point: How long is a period of time and what is the distance of some space?