Why would'nt this work?

It can look dumb, but I always had this question as a kid, what physical principles would prevent this?

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Even if it were perfectly rigid, supernaturally so, your push would still only transmit through the stick at the speed of light. The speed of light is the speed of time.
- The push would travel at the speed of sound in the stick, much slower than the speed of light
  
  In a "perfectly rigid" stick (a fictional invention), the speed of sound is the speed of light.

175 comments