Why have we ruled out the possibility of finding something faster when we’ve only scratched the surface of space exploration and understanding?
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The speed of light is the speed of causality before it is the speed of light. It is the fastest that any two things can interact with each other before it is the speed of light. Light travels that fast because it has no mass, so it has no choice but to travel at the maximum possible speed.
For anything to travel faster than light, it would need more than infinite energy and it would then travel backwards in time.
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