Originally Posted By: Orac
I am going to sit on fence on that. You may be able to create one or not it depends on unknown physics answers. QM entanglement is measured to propogate at least 10,000 times faster than light and in theory it is instantaneous over any distance. The idea has been used to set time records here on Earth and there is a project to deploy a space based version. If theory holds and it is instantaneous and over any distance then you can have a global "now" clock.


That's a very good point, but in the OP I was looking at the situation from the viewpoint of relativity rather than QM. You may recall that I have some unconventional ideas where entanglement is concerned. smile

Would you still be on the fence if we were working only with relativity?

There never was nothing.