This question has surely been asked many times and it's not very scientific, well the level of the question asked is not scientific at all. Time is obviously directly related to movement, without any movement, there should be no time, but then again, everything seems to be moving on some level and i'm not sure if there can possibly be any absence of movement, however, if there was a space inside of which the 'construction' of every element was in a form that cannot change position relative to each other or any other space, would time exist? I was also wondering about time itself, does it exist as something more than just a measure of speed? Does it actually exist at all? Some like to call it the 4th dimension, even though the first three are related to space, and it seems to differ from them. The importance of this question is only when thinking about changing time and possible zones/universes/dimensions in which time does not apply at all or applies in a different way. Let's take a black hole for an example, most of actual information about it is still unknown, but it is possible that time has a different definition inside of it, if it is even in any way possible to find yourself, or well anything that is good enough to be used as a measure inside of it. So i assume that to globally change time flow is impossible, or not? However, as time is relative, changing time could have an infinite amount of meanings, for example, doing more things in a shorter amount of time would mean that for you, the time was faster than usual, but then again as you cannot go back in time and repeat the exactly same action twice, you have nothing to compare to but things that have happened under slightly different circumstances which is why you cannot say that the time went any faster or slower, just that it went different than it did another day, but that could be for many different reasons and not just your actions. The problem i see is that if time doesn't exist as a wave, or a particle, or anything that can be described as more of a measure, how could it possibly be changed? How could we possibly go to the future or the past, like for example people in the movies do. The question is basically about time, your time understanding, and the possibility of affecting time.