# Can Information Travel Faster Than The Speed Of Light? [duplicate]

Many believe that nothing can travel faster than speed of light, not even information. Personally, i think theoretically information can. Consider this following imaginary experiment:

Imagine we are living on a planet that is big enough for a, let's say, 10-light-seconds-tall tower to erect. We hang a pendulum near the planet's surface using a long thin wire at the top of the tower. If someone at top of the tower cut the wire then the pendulum will instantly falling to the ground. In this case we can say that the information "someone cuts the wire" travels 10-light-seconds distance in no time.

Since someone on the surface can only see the act of cutting the wire 10 seconds later, can we infer that the information travels faster than light?

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## marked as duplicate by Kyle Kanos, Nathaniel, Qmechanic♦Mar 5 '14 at 15:20

possible duplicate of The speed of gravity? – Kyle Kanos Mar 5 '14 at 14:33
The information about the cord being cut isn't communicated to the mass instantly. Google 'the scissors paradox' for a very similar conundrum considered early in the days of relativity. There are some good notes on it here – Chris Mueller Mar 5 '14 at 14:33
The logical fallacy here is begging the question. You've assumed the conclusion in the premises, i.e., you've assumed that information travels instantly ("then the pendulum will instantly falling to the ground") to 'conclude' that information travels instantly. – Alfred Centauri Mar 5 '14 at 14:49
It could also be considered a duplicate of physics.stackexchange.com/q/2175. The question is framed slightly differently, but the answers to that question explain very well why the pendulum will not instantly drop to the ground. – Nathaniel Mar 5 '14 at 15:01