Continuity mistake: When Sandy puts the cigar into Fred's mouth, he lights the cigar and it explodes, leaving Fred's face covered in black marks. In the next shot, the marks have disappeared.
Continuity mistake: When Fred, Wilma, Barney and Betty arrive at the Ferris Wheel, there is a queue of people behind them. When the circus owner listens in on Fred and Barney's conversation, the queue has disappeared.
Continuity mistake: During Fred's dream sequence, Fred tells Barney that he missed watching Pebbles and Bamm-Bamm grow up and behind Barney there is a table and a painting on the wall. In a close-up of Barney in the next shot, both the table and painting have disappeared.
Continuity mistake: When Detective Shale knocks at Fred's door, he is wearing a blue suit, but when he enters the door, his suit is now yellow.
Continuity mistake: When Fred and Barney are driving their car through the One-Way tunnel, the edge around the hole at the back of their car is smooth, but when Barney turns right to go through a tunnel, the edge is now torn.
Continuity mistake: When Fred and Barney discover that the football match on TV has been postponed, we see an interviewer sitting at the desk and you can see there is a nameplate saying "T.V." in front of him, but when the interviewer introduces Eppy Brianstone in the next shot, the nameplate has disappeared.
Continuity mistake: When Fred carries a plate of sandwiches to watch the football on TV, the TV channel knob has nothing around it, but when Fred switches on the TV to watch the football, there are now dots around the knob.
Continuity mistake: When we first see the Flintstones' house at the beginning of the episode, the handle is on the left-hand side of the door, but when Dino walks out of the house after Fred tells him to play outside, the handle is now on the right-hand side.
Continuity mistake: When the man playing pool says "Try the old folks' home, pops!" and Fred leaves the pool hall, Fred's walking stick changes from his right hand to left hand between shots.
Continuity mistake: Before Mr. Slate takes a picture of his employees, Sandy (the one that Fred gives a hot foot to) is standing by two other men. When Fred gives Sandy a hot foot, the men have disappeared, and when we see the photo that Mr. Slate has taken, they are back again.
Continuity mistake: When Fred and Wilma are in their beds, you can see that the holes in the dial of the phone are in a diagonal position, but when we see a close-up of the phone, the holes are now straight.
Continuity mistake: When the hunter hits Fred on the head with a small rock, Fred falls down on the ground and there are some plants and rocks next to him, but when the hunter goes to see Fred, the plants and rocks are no longer in sight.
Continuity mistake: Outside the windows of the house of Julia's friend it is daytime, but outside her front door it is night.
Continuity mistake: When we first see Eddie the radio announcer, his hair is blonde. But later on in the episode, his hair changes to a reddish colour.
Continuity mistake: When Fred and Barney are driving home in Fred's car, the hole in the back of the car changes shape between shots.
Continuity mistake: When Wilma and Betty are watching "Shinrock" on the TV, the camera cuts to Pebbles and Bamm-Bamm and the rug they are sitting on is covered with building blocks. Later on, when the two are trying to dance the "Pterodactyl", the rug is completely clear.
Continuity mistake: When Fred is performing "Let The Sunshine In" at the end of the episode, you can see that his right foot is next to Bamm-Bamm on the rug, but in a close-up of Pebbles and Bamm-Bamm, his foot has disappeared.
Continuity mistake: When Wilma is speaking to Fred outside her house during the dream sequence, you can see she is holding an ear trumpet in her right hand, but later on in the scene it disappears.
Continuity mistake: The "Sandy" who Fred challenges at the pie-eating contest is a completely different man to the one who sprayed Fred with water earlier in the episode.
Continuity mistake: In the scene where Mr. Slate asks his employees to gather round for a group photo, Fred decides to liven up the situation by giving Sandy a 'hot foot'. When Mr. Slate takes the photo, Fred is lighting the match on Sandy's foot, but the picture that comes out of the camera shows him not lighting the match at all.
Answer: The ratings had declined in its last few seasons, and the series was cancelled.
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