Faster-than-light communication doesn't necessarily break causation, if there is an absolute reference frame (blog post plug: http://forwardscattering.org/post/

Faster-than-light communication doesn't necessarily break causation, if there is an absolute reference frame (blog post plug: http://forwardscattering.org/post/36 http://forwardscattering.org/post/36) Quantum 'spooky action at a distance' is something else though, as you can't communicate info with it (see 'no communication theorem').