Interesting idea... Do you subscribe to the notion that the speed of light is constant irrespective of the speed of the observer? Also, if time is not altered, but only the perception of it.. that would require there to exist an absolute time. Which would also mean, that at some point/speed, your perception of time must be correct. This would indicate that you are at rest with respect to some absolute frame of reference? Has not the existance of the aether been disproven? Or can you similarly discount that evidence with your above hypothesis?