hello . please pardon my ignorance when reading my simple question . -so if a magical spaceship flies from earth at 80% the speed of light . time should go slower for the person inside the spaceship due to time dilation . so time goes slower for him . the thing is if we change the way we look at it and reverse it . aren't we moving away from the spaceship at 80% the speed of light to ? -why does time have a rate ? so time has a current rate , if we move it slows down . what get the first rate to exist in the first place ? -if humans do not exist and no intelligent being exists , nothing that can have a notion of time exists . does time itself exist then ? -if i have two tennis balls , and i throw one and let go of the other . one of them should fall down while the other goes up . now if we stop the flow time , they will both be still in place though if time runs again one of them will go up and the other will go down , what's the physical difference in space that get's one to go up and the other to fall ? is the information about movement stored inside the 3 dimensional space ? if you know everything about the 3 dimensional space at a given time , can you tell what happens next in time ? -is the information that describes reality changing ? or is it constant and well determined ? . i mean , i know that we are going through time and things are changing . but you take one time frame with one 3 dimensional space .. isn't the third dimension the time axis of the second dimension ? though we see space in that exact time frame as something well determined and fixed . and if a 4th dimensional creature looks at us and our time he will see everything that ever happened but it will be stable and fixed in one 4 dimensional frame . and you can keep going up in dimensions and the same observation keeps happening . so how can we know ?