Continuity mistake: When Fred has a nightmare he drops his pillow on the floor, and just as Wilma gets out of bed to pick it up, Wilma's pillow simply vanishes into thin air within the same shot. (00:13:50)
Continuity mistake: During the circus performance, Rodney the knife thrower is wearing a one-shoulder outfit, which repeatedly switches from his left, to his right shoulder, and back again. (00:17:30)
Continuity mistake: When Fred introduces Wilma's book to Barney, the book is red, but when Wilma is reading the book in bed later, the colour is now green.
Continuity mistake: When Fred is reading his letter about his position being accepted at the Stone Valley Inn, you can see Wilma is sitting in the chair next to him, but in the next shot the chair is empty and Wilma is nowhere to be seen, then she reappears in the chair.
Continuity mistake: When Fred hands Barney the job advert he saw in the newspaper, Barney takes it with his right hand but a close-up of the advert shows him holding it with his left hand.
Answer: The ratings had declined in its last few seasons, and the series was cancelled.
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