Other mistake: When Rimmer tries to silence the vending machine, he covers up the input microphone with stickers instead of covering the speaker just above it. (00:05:05)
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Suggested correction: This isn't a mistake. There's no evidence that the speaker is just above the microphone (the "speak here" grill). The vending machine tells Rimmer to take his hand off its speaker when his hand is over the "speak here" grill. This suggests that the grill covers both the microphone and speaker.
