Saw this as an answer to another question and can’t wrap my head around the logic. What? How? Why??
In: 56
It’s the fastest speed that one event can cause another.
So if you do anything, wave at the Moon, send a radio signal to the Moon, connect a stick to the Moon from the Earth and then give it a push, etc, etc, etc the fastest that something could happen on the Moon from that would be that event travelling to the Moon at the speed of light. That’s the max. It could travel a lot slower such as in the case of a stick connected to the Moon from the Earth and then pushed.
This is because anything with 0 mass travels at the speed of light and anything with more than 0 mass travels slower than the speed of light.
As to why this is so the answer is because that’s how the universe works.
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