Factual error: At the dance in 1947, a US flag with 50 stars is visible.
Factual error: In the opening scene Addison and Pete are running on treadmills side by side. They are seen increasing their speeds to 8 mph and above. Addison even had hers to 10.1 mph yet they are both still talking, smiling, and laughing easily. 10 mph is a very fast speed for humans and they would not be able to laugh or even speak at those speeds. (00:02:10)
It's Good to Be Back on the Moon - S1-E9
Factual error: The Apollo 11 flag gets knocked over by the Chinese rover...but the flag was blown over by the Eagle's takeoff thrust, witnessed by Buzz Aldrin. This was confirmed years later by the Lunar Reconnaissance Orbiter, which showed shadows of the flags planted at all six Apollo landing sites, bar Apollo 11's. The other 5 were all planted further from their landing craft precisely for that reason. It's also widely assumed that the flags on the moon would have been bleached white by decades of unfiltered sunlight, not in good condition like the one shown.
Factual error: When J.J. first discovers his powers and understands math, the parabola "seen" on the board is wrong for the given equation and it's different than what J.J. actually ends up drawing, which seems more like the right answer.
Factual error: Ann enters Julie/Barbara's room and Eton John's "Rocket Man" is playing. Barbara is siting in front of the turntable playing a 33 LP that has the distinctive Atlantic Records Red/White/Green label. Rocket Man was never published on Atlantic records. (00:19:00 - 00:20:00)
Factual error: Myra's pet "chameleon" is some other type of lizard, not a chameleon.
Factual error: When the trucker reaches into the bag that's suppose to have his cash with his "bonus", he's bitten by a venomous snake. However, we see the snake and it's a non-venomous king snake.
Lighthouse Keeping Loonies AKA The Lighthouse Men - S5-E8
Factual error: The "oil" that spurts up from underground is far too thin to be oil.
Factual error: PJ is getting his hair cut by an attractive female barber. Attached to the outside of the window is a neon sign reading "BARBER SHOP," but the sign faces the inside of the building so it would be backwards to people outside.
Factual error: David Jason's character visits the bank to pick up the share certificates left to him by a previous Master. Much to his surprise the bank manager tells him that these shares are now worth £500,000. The bank manager looks at the certificates, then at a screen by his desk before making the calculation very quickly in his head. Given that the certificates are decades old this is impossible. It would take a considerable amount of time to work out the new number of shares that the certificates would entitle the bearer to based on share splits and consolidations over the years. Also, the shares would be denominated in pre-decimal currency so they would have to be revalued based on the conversion rate at the time Britain went decimal. It would be a time consuming and painful task to decide their new value.
Factual error: Nancy takes her son Silas to an 'underground' doctor used by gang members following an attack by a biker gang. After she tries to negotiate a lower price due to the lack of anesthetics, the doctor says that he can get a second opinion at a hospital and order a $10,000 MRI if she would rather pay for that. However, an X-Ray is the first, less-expensive method used by emergency rooms and trauma centers to confirm a fracture. An MRI is typically only used to evaluate skull/brain-related injuries, but is a rarer utilized, expensive second option to evaluate a fracture that generates an unclear X-ray.
Factual error: During "Jester Balowski's Medieval Torture Hour," Balowski grabs the guys arm and bends it the way arms are supposed to bend, yet you hear a breaking noise.
It's Only Rock and Roll - S4-E4
Factual error: When Del is running out of the pub, him and one other are carrying guitar amp heads and are flinging them about with ease. Heads weigh around 20-30 kg each and would be extremely hard to fling around in such a way as they are. (00:17:00)
Factual error: In "The State Vs. Chip Douglas", Ernie finds his missing 1914-D penny when it falls out of his pocket. A close-up shows an Indian head penny lying on the floor. The problem is that Indian head pennies were not minted after 1909.
4 Rms Ocn Vu - S3-E8
Factual error: Some of the visitors came to the Keaton "hotel" (their house) for the "ocean view." This takes place in central Ohio (near Columbus). There are no oceans around there.
Factual error: When Ralph goes out the window onto the fire escape to save Ed the first time in the episode, Alice is looking out the window (to her right) telling Trixie all the step by step movements of both men, ending with, "and he's taking him right into your window." The Norton's live directly upstairs from the Kramdens, but Alice never changes the direction she's looking at the whole time. She should be looking straight up as Ralph leads Ed into their window. There is no other window to the right. (00:02:30 - 00:03:04)
Glorious Five Year Plan - S3-E4
Factual error: The Boys use a Dodge Sprinter to drive around Russia. In Europe and Russia this Sprinter was only sold through Mercedes-Benz.
Factual error: At the start of the show, it states it's 1902. However in the opening scene, the flag shown is the 1912 design, with 48 stars. In 1902 there were only 45 states.
Fat Like Me - S5-E3
Factual error: When we see Tiffani and Stacy talk on the phone with Quinn (on the other end), we hear a call waiting beep from Quinn's end (but the camera still on the two girls' side) and Quinn mentions she's getting a call from Sandi. The mistake is only Quinn herself would have heard the "beep" and the other girls would have just heard Quinn's voice cut off with dead air for a second. Tiffani and Stacy should not have heard that "beep" like it was shown in the episode.
Factual error: This programme is set in 1935, but in all aerial shots all cars that can be seen are from the 1970s.