Nobody addressed my particle entanglement theory. I realize that my next post made it irrelevant. But still, this is a message board of science. Isn’t it 
?
Particle entanglement does not allow faster than light communication, unfortunately. When you have entangled particles, you can find out later (long enough for light to travel between the two points in question) that the particle spins (or other properties) were weirdly correlated - but that doesn’t help you in the moment, because you can’t control the particles in order to send a message.
Example. You’ve got a particle on Earth, entangled with a particle near Alpha Centaurus. You’d like to send a message to Alpha C, saying “Yes” to some question. But all you get is that if your particle turns out +, you will eventually find that (if your pal on Alpha C tested his particle in the same way) that the Alpha C particle turned out -. But that doesn’t tell anyone anything, since you can’t make your particle show + or - on command.
I call @Chronos for physics backup!
I suppose if we figure out how to influence the spin without interacting with it, we could do it.
But that almost seems a direct contradiction in terms.