Corrected entry: When Ace's spaceship crashes into Starbug in "Dimension Jump," the two craft are roughly the same size. But in "Stoke Me A Clipper," he is able to comfortably park inside Starbug.
Corrected entry: If Rimmer's bedsheets are holographic, Lister shouldn't be able to move them.
Corrected entry: From series 4 onwards, Rimmer is held in place by a "light bee" which is solid. But, at several points in series 1 and 2, he is able to walk through solid objects, which his light bee would be unable to do.
Correction: In "Thanks For The Memory", Rimmer uses a projection cage to visit the surface of a nearby world, showing that he didn't have a light bee at that point. The addition of the light bee is clearly an upgrade made at some point after that time, making it entirely reasonable that he could be seen to walk through solid objects in the early seasons.
Corrected entry: If Rimmer is a hologram, why does his head make an impression on the pillow when he lies down? The pillow isn't a hologram. Rimmer doesn't ask for it to be turned on and its there when he's not in the room.
Correction: Rimmer's blankets and pillow are hologrammatic as well, since a hologram sleeps in them. They may just be left on full time for simplicity's sake.
Corrected entry: Throughout the whole show, Kryten alternates between obeying Rimmer because he outranks Lister, and obeying Lister because he's a human whereas Rimmer is a hologram.
Correction: We don't know exactly what protocols he's forced to obey. It may just be in certain situations (Kryten seems to side with Lister a lot more when it's "Life or death", perhaps with a Hologram's decisions would be biased, since they're already dead) that he's programmed to do this. Also, considering that it was Lister who repaired him at the start of series three (and has repaired him again at least once since), there are likely to be one or two faults in him.
Corrected entry: In some episodes, we are told there were originally 169 crew members on board the ship. In others it was 1169.
Correction: We are told there were 169 crew members on board but 1169 PEOPLE. The others could be non-crew members such as miners (it was a mining vessel, after all), passengers (commercial ships often carry them) or even crew members families (not unreasonable on a five year trip). There are many possible explanations.
Corrected entry: Lister does not seem to know much about his childhood, as he tells several contradicting stories about it. In series 2 Lister talks about how upset he was when his father died in the episode "Better Than Life". It is possible that he was talking about a foster father when he said this, but we learn in the episode "Ouroboros" in series 7 that he was abandoned, and never knew his parents at all. He also said in series 7 that he lived with his granny too, which leaves the question that if he knew his own granny, then why didn't he know who his parents were? Three different stories of his childhood.
Correction: We established that Lister was abandoned in Series 3 in 'The Last Day'. Therefore we can assume that everyone in his family that he talks about being alive are his foster family and their relatives.
Corrected entry: During the episode "Thanks For The Memory" in series two after Rimmer realizes that some of his memories where actually Lister's he says "no wonder I remember having my appendix out twice" (or something like that) meaning that Lister has had his appendix out. But during the episode "Legion" in series 6 Legion takes out Lister's appendix.
Correction: Grant Naylor have said that Lister grew another appendix when his genetic structure was transmogrified in the episode "DNA."
Correction: The run-in with the future selves and being killed by them at The End of season 6 caused reality to destabilize and changes to the ship. (At one point, one of the cargo decks is said to have increased capacity 44%.) Making it big enough to land Ace's dimension ship inside could be one of those changes.
Captain Defenestrator