Red Dwarf

Bodyswap - S3-E4

Revealing mistake: During the Scrabble game, Lister (in Rimmer's body) jumps out of his seat and you can hear the chair scrape across the floor. As Lister is a hologram, he should not have been able to move the chair. (00:14:45)

Dwarf

Me2 - S1-E6

Revealing mistake: In the sleeping quarters when the cat is courting, he says 'If I believed that for one minute, I'd go crazy'. You can see Lister is mouthing the line. (00:10:50)

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Red Dwarf mistake picture

Demons & Angels - S5-E5

Revealing mistake: After Starbug lands on the 'high' Red Dwarf, Rimmer is running out of power and starts to fade in and out. However, Cat, who must be standing too close to Rimmer also fades, the backdrop being partially visible through him. (00:08:05)

Back To Reality - S5-E6

Revealing mistake: At the very start of the episode, when the SSS Esperanto is seen, the bubbles from the seabed are sinking rather than rising, revealing the piece of footage is being played backwards. (00:00:35)

Dwarf

Back To Reality - S5-E6

Factual error: While it is true that lithium carbonate can be used to treat depression and other psychiatric disorders, it cannot be administered in gaseous form. It is a very stable salt and only starts to form vapour at 1,310 degress Celcius. Spraying it about as a 'mood stabliser' at that temperature, as Kryten does, is going to kill everyone on the spot.

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Demons & Angels - S5-E5

Holly: Rude alert! Rude alert! An electrical fire has knocked out my voice-recognition unicycle! Many Wurlitzers are missing from my database! Abandon shop! This is not a daffodil! Repeat, this is not a daffodil!
Rimmer: Well, thankfully, Holly's unaffected.

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Meltdown - S4-E6

Question: When Kryten and Rimmer were doing the roster of their ranks, Why did Kryten skip the old woman in the black dress with the white shoulder sash between Dali Lama and Mr. Noel Coward?

Answer: It's Queen Victoria, someone any Englishman would recognize, and needed no introduction.

Kryten was introducing the "people" to Rimmer. Rimmer isn't an Englishman; he's not even from Earth; he's from Io.

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