That sounds like hocus pocus. As far as I know, a wormhole, whatever the mouths place in spacetime, COULD be a legitimate path through which EM waves could travel, to say nothing of the possibility of matter transits. If that's the case, fuck it, wireless internet through the wormhole, radio coms, whatever. A two-way continuous communication that would evolve according to the ever-changing causality at play is as far as my brain gets when considering the possibilities. I guess it's called a timelike loop, where reality resolves itself considering all possibilities resulting from the loop, like a collapsing wavefunction
NO, THAT'S A PB!!!
I'm not really up on that. I had the thought years ago when it seemed that Trump had knowledge of the future, and I was also already familiar that it could, theoretically, be done. Now, maybe I'm right in assuming neither matter nor EM waves can pass through, and you do indeed need a psychic, but that's supernatural stuff and my knowledge doesn't lie in that realm.
You never asked for this