How the laws of physics could prevent us from ever meeting aliens

Where are the aliens? Italian physicist Enrico Fermi posited the idea that aliens may not exist simply because, if they did, there should be some evidence for them. Fermi wasn’t a troll. You can believe in aliens and also recognize that science requires actionable data. But what if both Fermi’s paradox and the alien enthusiasts are correct? What if we posit a sort of Fermi’s Alien where, like Schrodinger’s Cat, the creature exists in two paradoxical states that are simul