About the light bee - I always assumed while Rimmer was on Red Dwarf he didn't need a light bee as it had projectors on board. When he is on Starbug or on other ships, he uses the bee as a remote projection unit. Perhaps there are parts of the ship where Rimmer needs to switch to a light bee, like in cargo areas (like when Lister crushes Holy Rimmer's bee in Demons and Angels). Sometimes he uses the bee, sometimes he doesn't. Depends where he is and what technology can support him. About the radiation leak - if the ship was completely sterilised of all bacteria which means nothing decomposes, then shouldn't Lister die shortly after leaving stasis? I can't imagine a human lasting very long on a ship with absolutely zero bacteria. Also, if bacteria was allowed to live, and breed, and evolve, wouldn't Lister also die from being exposed to an environment that his body has absolutely zero immunity to? This kind of thing always pops up whenever time travel comes up. Leaving the environment that your body has spent years building itself up to protect you from, and entering an environment that is now completely different, I would imagine, would be like walking onto an alien planet without a space suit. You would end up like the aliens in War of the Worlds, surely? Cat would be fine because he evolved from that environment, but Lister would get sick. So, if Holly somehow managed to replicate or preserve a Lister-friendly environment, which the Cat people also share - this still causes problems whenever they go back to previous versions of Earth or other spaceships without suits. This is just something that's not really an issue exclusive to Red Dwarf, but pretty much anything with time travelling human characters. Shouldn't they all end up deader than a can of spam?