[This was moved from a thread in Philosophy Forum. -MIH] ..an example that is commonly used in physics and my response for it. Is light actually passing him at 300,000,000 m/s? I would say no. Let's say he starts moving at 299,999,999 m/s. This will slow down thinking, perception, any measuring equipment, etc. So even though light is passing by him at only 1 m/s he will perceive or measure that it passed at the speed of light since he is measuring everything so much slower. Guess what I'm trying to say is that his perception doesn't matter because reality is that light is passing him at 1 m/s. Hmm...second thought. I guess relativity is a function of cognitive thought? I.e. inanimate objects would never perceive anything and therefore relativity never comes into play.