This question may seem a little ridiculous... I have not taken a course on relativity (I did get a bit of an intro in modern physics class) so maybe that's why I thought of such a crazy thing. Anyways, here it is - What if objects that move fast in our eyes aren't necessarily moving faster, but are just experiencing slower time? Even if the time difference is over a billion trillionths of a second, what if we perceive that difference as much more of a speed? When I say "moving faster" I mean traveling at a faster rate through the three dimensions of space. What if everything actually moves at the same rate through space but at different rates through the fourth dimension, time? I know this is a ridiculous thought and I hope I don't get flamed for it, but it's just something that's been nagging at my mind. I know this is crazy but I think it's kind of fun to think about.