Because we haven't yet been able to observe anything or force anything to travel faster than the speed of light. Thus, until such an event is observed, it is scientifically valid to assume the speed of light the absolute fastest anything can travel.Originally posted by webcat111
said Einstein - but why has everyone this nail in the head the the speed cannot be faster then the light ?
-Colin




), but we're not omnipotent masters of space and time. 



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