According to the paper, FTL sound is all around us.
Quantum entanglement can be imagined as a perfectly ridged rod connecting two particles across time, not space - a clearer understanding is that the two entangled particles are actually one particle, smeared across space.
What defines distance? Susskind says it's quantum DISentanglement - that smear branches like a tree, and distance is the relative positions of two branches to one another. Everything is entangled to everything else, but the degree to which any two particles at any given time are entangled creates space.
In a closed timelike loop, this looks like a tree whose branches curl back toward the ground, and fuse with the roots. A dipole with no neighbors ejects photons from one pole, and absorbs them with the opposite pole.
Eternalism tells us that all future moments have already happened - this is why the future can effect the past. Through QE, particles can transfer quantum states FTL, and into the future and past. Time moves in more than one direction, and so does causality.
Hugh Everett said all this back in the 60's, and everyone else has been desperately trying to rescue free will from superdeterminism. There must be some organic difference, because I've never been attached to free will - you either understand the universe as a single, monist, self-aware object, or you see it as many dead objects and a few warm bodies against the IR blackness.
A closed timelike loop multiplies energy and matter, because it makes frame 1 and frame 100 identical - frame 1 and frame 100 share identical states. Since the ending state is identical to the beginning state, frame 99 has to transfer enough energy to frame 1/100 to start the cycle.
As you increase your E, you increase your distance. So, we'd expect to see the rest of the universe receeding from us, and we'd expect to see evidence of invisible energy and matter from points in the timeline we aren't in at the moment.