Einstein once upon a time said that the faster you go the slower time goes. Speed is Distance/Time. If Time goes slower as a cause of speed, then the Time variable would be smaller and thus the speed greater. This would cause an infinite acceleration as more speed would cause the time to go slower and slower time will cause the object to go faster. Here comes the paradox: As Einstein stated, time is relative to space, thus the "slow time effect" caused by the great speed is only present around the moving object. This would mean that the acceleration is only noticed from within this space around the moving object. From a stationary point of view the object would seem to be travelling at a constant speed. How can an object accelerate and be at constant speed at the same time?