The Indians in the Lobby - S3-E8
Continuity mistake: When Josh is drinking water from a bottle he starts screwing the lid back on as he moves it down towards his desk. In the very next shot, however, not only is the bottle suddenly on the desk without Josh's hands anywhere near it, it also doesn't have its lid on. (00:10:05)
The Indians in the Lobby - S3-E8
Factual error: When President Bartlet is on the phone with the butterball hotline, he claims to be from Fargo, ND. Charlie tells him the zipcode of Fargo is 50504. Fargo has 13 zip codes assigned to it. None of them are 50504. They are all beteeen 58102 and 58126. (00:28:05)
Factual error: When Sam is telling Leo about the couple who crashed their car after the fundraiser where the President talked about seat belts, he states, "Now she's suing him for contributory negligence!" Contributory Negligence is not something you can sue for, it is a defense to a lawsuit and is based on the plaintiff's own negligent conduct - the woman would be suing the president for just "negligence." Sam repeats the phrase at 7:45, when he claims "Contributory negligence in wrongful death is the tort equivalent of murder." This makes no sense from a legal perspective. As an attorney, Sam would know the difference - this a writing mistake. (00:01:52)
H. Con-172 - S3-E11
Factual error: When Leo is talking with Jordan about why he doesn't want the President to be censured, he states that this would be the first time a President was censured. This is untrue. Both Andrew Jackson and James Buchanan were censured by Congress (although Jackson's censure was later expunged). (00:11:25)
H. Con-172 - S3-E11
Audio problem: Toby enters the Oval Office at the end of a meeting the President is holding with about a half-dozen people. The meeting breaks up and Toby follows Bartlet toward the desk as the others meander toward the door. A few seconds after the camera pans away from the others, we hear the door close and the room is now silent as Toby and Bartlet begin to converse. But the door closing happens way too soon for all those people to have gotten out of the room. Two men are especially just standing there, looking as if they aren't planning to leave at all. The other doors aren't used nor heard. (00:14:15)
H. Con-172 - S3-E11
Character mistake: Bartlet tells Leo that Jackson's censure was expunged in 1836, but it was actually January, 1837. (00:41:10)
Plot hole: Joey and Kenny are led to the Oval Office by Charlie through the Presidential Secretary's (and his own) office. Charlie ends the scene saying, "Okay, you're in the Oval Office" as he sends Joey and Kenny that way. Charlie always knows the President's whereabouts and schedule. Yet moments later, Josh arrives in Leo's office where others have gathered to await the start of the same meeting - and Joey and Kenny are also here. Then everyone goes into the Oval Office to await the arrival of the President. It is as if the makers forgot Charlie led Joey and Kenny here moments earlier.
Other mistake: At the beginning of the show, the TV news program on the president's jet shows the time of 5:16 and that it is a "Live" broadcast. However, the time on the bottom of the screen, setting the context for the viewers, is 5:40.
Factual error: When the British Ambassador, Lord Marbury, greets Abbey at her party, he tenders best wishes from "Her Royal Majesty", his Monarch. However, as Her official representative, Lord John should have been cognizant that the reigning British monarch is referred to strictly as "His/Her Majesty".
Factual error: Lord John Marbury says he is "the Earl of Croy, Marquess of Needham and Dolby and Baronet of Brycey." His title according to the British peerage rules would be "The Earl of Croy" and he would be called Lord Croy in conversation. Lord John Marbury would be what one of his younger sons also named John would be called.
The U.S. Poet Laureate - S3-E17
Character mistake: Jed Bartlett is talking to Leo and Hoynes. He says 'Calvary' instead of 'Cavalry' in the line "Tell Josh that General Pulaski was a Polish Brigadier General who vanquished the Russian and Prussian military then came to the colonies and commanded our cavalry during the American revolution."
Audio problem: When Bruno unmutes the televisions in the communications office for Sam, you can hear one some of the newscasts looping before the scene ends.
Continuity mistake: Josh is getting coffee and talking to another guy about a Shakespeare production Bartlet is supposed to attend. When he goes to the coffee machine, his backpack is over his shoulder and the strap is near his collar but not covering it. When he walks away from the coffee machine, most of his collar is covered and quite dishevelled from the backpack strap. At no time did Josh adjust the backpack.
Continuity mistake: When Josh is walking down the White House hallway in the office area, he is talking to someone, and at first there is nothing in his shirt pocket, but as the scene progresses, we can see his glasses in the pocket. He did not put them there during the scene.
Continuity mistake: Josh and Amy are in a restaurant having breakfast and talking about the vote - the sugar dispenser can be seen next to some yellow flowers. In subsequent shots the flowers are still there but the dispenser has disappeared, even though no one touched it.
Character mistake: The President refers to Beowulf, saying that it was written in Middle English. He's mistaken; it was written in Old English, or Anglo-Saxon.
20 Hours in America: Part I - S4-E1
Factual error: This show is supposed to take place in September, but the height of the corn and the complete lack of foliage change (even in early September there would be a little red or orange in the trees) make it look much more like June.
20 Hours in America: Part I - S4-E1
Continuity mistake: Bruno and C.J. sit down in a meeting and are talking about women voters. When the shot is on Bruno, we can see C.J. is holding a black folder that is partially open. When the shot goes to her, though, she has her hands on the folder, which is opened on the table.
20 Hours in America: Part I - S4-E1
Factual error: The President is campaigning in Indiana and Josh, Toby, and Donna get stranded there around noon - but the shadows are quite long and it is obviously not noon in real time, but perhaps mid to late afternoon.
College Kids - S4-E3
Character mistake: At the Rock the Vote rally at the Cambridge MA House of Blues, CJ Craig claims that 18-24 year olds are 33% of the population but only 7% of the votes. This is false: per the 2000 Census, which tracks population based on 5-year age cohorts, all persons 15-24 totals only 14% of the population. From that we could estimate the 18-24 population in 2000 as no more than 10%. See http://www.census.gov/population/www/cen2000/briefs/phc-t9/tables/tab01.pdf It is possible they meant all persons 24 and under, who make up approximately 35% of the population.
Chosen answer: A really annoying innate lack of sense. My friends and family say the same thing all the time, and I'm endlessly trying to correct them. I think people just don't know any better and (ironically) couldn't care less that they're speaking incorrectly.