Meanwhile, or even perhaps quite a bit later, in another part of the galaxy, a genius invents something similar, while being prudent enough to not mention it to anyone.
Barbara took a deep breath, “Okay, now tell me what you’re not telling me. What’s the downside?”
Bernie smiled, “You mean, apart from all of this being theoretical, and probably not working at all? Well, one obviously important thing to consider is navigation. Neutrinos, and neutrino packets, can pass through anything without interference -- but if the vessel should happen to coalescence inside a planet or star, the results would be ... unfortunate.”
Bernie got a far-away look on his face for a moment, followed by one almost of alarm. He returned to his subject.
Hijacking a hyperspace traveller through neutrino twinning and particle pairing.