The Big Bang Theory

The Wiggly Finger Catalyst - S5-E4

Corrected entry: Five minutes into the show, Sheldon has written down what a dice roll will tell him what to do. He rolls the dice, pauses and looks at the list to see what he has to do for that dice roll. The problem is he has an Eidetic memory and wouldn't take the time to look at the list when he can already see it in his head.

terry s

Correction: This is not at all accurate. The list he his looking at is the Cheesecake Factory menu, not one he created himself. Given the nature of the menu page Sheldon looks at, it's unlikely he's ever looked at that page before.


They ate there almost every episode.

terry s

They ate there every Tuesday and Sheldon always got the same thing (except when following the dice), the barbecue bacon cheeseburger with the barbecue sauce, bacon and cheese on the side.


The Irish Pub Formulation - S4-E6

Corrected entry: Sheldon is playing an online game he found. He yells to Leonard "I'm trapped in quicksand, the axe is dragging me down." Leonard then tells him to "Drop axe." Shortly after, Sheldon heads to bed, but he comes back saying "I know how to get the bucket. I can turn the axe around and use the handle to reach it." However, he does not have the axe as he has already dropped it. (00:06:05 - 00:07:45)

Kat Haggith

Correction: Sheldon is playing an old text and type game, many of which have only one way to beat them, so once Sheldon died, he would be sent back to the start, eventually reclaiming the Axe.


Correction: She doesn't say that about the hologram; she says it about the actual pencil. Which it is, as Leonard puts the pointy end into the table that has equally spaced out holes in it, making it stand upright. The laser can't see below the hole in the table, which is why it doesn't appear to have a pointy end in the hologram.


The 21-Second Excitation - S4-E8

Corrected entry: Sheldon steals the 35mm movie canisters and 2 exterior metal cases for "Raiders Of The Lost Ark" so that they supposedly could see it at a later date. We then see Sheldon running with the movie canisters and cases. That would not even be remotely possible as the 2 sets of film weigh approximately 140-160 pounds. Each individual reel (of which there would be a total of 4) has a weight of somewhere between 30 and 35 pounds including the film and individual canister. If you add in the weight of just 2 canisters plus the carrying cases they come in, that's well beyond Sheldon's carrying capacity.

Correction: I worked with 35mm for 10 years. Each case weighed about 35 lbs for 3 reels.

Correction: Like the Relationship Agreement, the Roommate Agreement is designed to be entirely for Sheldon's benefit. There's almost certainly an Exception Clause that lets him stretch the definition or alter it however he wants. Leonard would know this and probably not consider it worth fighting about.

Captain Defenestrator

Correction: In Halo 3 you can change around some features of the remote, including which trigger fires grenades and weapons.


The Tangerine Factor - S1-E17

Corrected entry: Penny storms into Sheldon and Leonard's apartment to throw her boyfriend's iPod out of their window and yell at her boyfriend who has just left. Raj then finds the iPod on his way in. However, according to the layout of the building with the front door being to the left of the elevator, the front side of their apartment building would be on Penny's side, so she should have thrown it out of her own apartment window. The window through Sheldon and Leonard's apartment would lead to the back.


Correction: There's no indication from the scene that she's catching him as he is stepping out the door. He could have had his car parked behind the building and was on his way round to the front.


Correction: The train was actually headed to San Francisco and made at least one stop when Summer Glau got off the train, since Pasadena is nearly 350 miles from San Francisco and it was not a nonstop route, the ride could take approximately eleven hours.


Correction: You can see that a person is in a relationship before it is approved by the other person. It would simply say "[Name] is in a relationship" without the other person's name until it is approved, at which point it would say "[Name] is in a relationship with [other name]".

Correction: Paintball markers can easily fire two shots per trigger pull, especially when the CO2 in the tank is low.

Grumpy Scot

The Codpiece Topology - S2-E2

Corrected entry: Sheldon's battery runs low during Leonard's date with Leslie so he gets an extension cord but leaves the door open. As he goes down the stairs the extension cord unwinds until he can't go any further and attempts to pull it. When Leonard gets up to shut the door there is no extension cord plugged into the outlet or leading out of the apartment.


Correction: When Leonard gets up to shut the door, the camera doesn't pan low enough to see the outlet or the floor so there's no way to tell if the cord is plugged in or not.


Correction: I have just reviewed this scene. Sheldon makes only one movement with his right hand as Howard walks in. Between shots he was able to walk from behind the group to the side. This gives him ample time to move his right hand back down.


Show generally

Corrected entry: The design of the apartment is impossible. Penny's door is directly above the main exit door. We have seen the outside of the apartment and there is no overhang to accommodate all the apartments on the left side.


Correction: Not exactly true. Using scenes from S03E20 - The Spaghetti Catalyst as a reference. Penny's door is flush against the stairwell. Scenes from inside the building downstairs, shows the main door is a distance away from the stairwell (lets say 8-9 feet). During a scene from outside, we can see that there is an external part of the building outside. The outside wall of the plant trough is at least 6 feet away from the door. This equates to about 15 feet for the width of Penny's apartment.


Correction: The four of them plus Penny is 5 people. It is closer to $6 each.


The Stag Convergence - S5-E22

Corrected entry: Leonard and Penny are inhaling Sulphur Hexaflouride to make their voices low. The effect can be seen to be fake for two reasons. First, their voices go back to normal instantly and on demand - the gas actually takes a while to clear. Second, when Leonard releases the balloon, it flies away; it should just fall to the floor because Sulphur Hexaflouride is heavier than air.

Moose Premium member

Correction: 1. Wrong episode. This scene is from Episode 23. 2. Your voice will clear in as much time as it takes to clear your lungs - one or two breaths. 3. A sulfur hexafluoride balloon will still fly, as the escaping gas is still propelling it, as demonstrated in this clip by Mythbuster Adam Savage


The Zarnecki Incursion - S4-E19

Corrected entry: When the characters are driving in the car during this episode, it looks to be a black car (when they film in front of the car). When they run out of gas, there is a shot of them pulling over. The problem is, the car is white when pulling over.


Correction: There are several episodes where Leonard's car is visible in daylight and it has always been a dark silver color. When viewing that car in low light it would appear to be black. Later when Leonard pulls the car over it is not white, it is silver.

The Tangerine Factor - S1-E17

Corrected entry: When Penny and Leonard are talking to Sheldon about their date, Sheldon refers to Schrodinger's Cat, stating "The cat in the box is both alive and dead, until you open the box and find out." Yet the precise point of the Schrodinger's Cat example is that the cat cannot be both alive and dead. Schrodinger was arguing against physicists of the time who claimed that certain subatomic particles were special and could be in opposite states at the same time; his argument was that you can't make small systems special because a large and obvious system (e.g., the cat) could always be made to depend on the state of the smaller one, and for a large and obvious system to be in opposite states simultaneously is ridiculous. Now, this is pretty obscure and the misunderstanding of Schrodinger's Cat experiment is widespread, but this is Sheldon we're talking about.

Moose Premium member

Correction: This is not a factual error on Sheldon's part. He explicitly says that Schrodinger's experiment was an attempt to explain the Copenhagen interpretation of quantum physics, which implies that the cat could be both dead and alive until the box is opened and observed. While he doesn't explain that the point of the experiment was to critique the prevailing thought of the time, his overall point to Penny fits within the context as given.

Correction: Paintball markers can easily shoot two balls in one shot. They aren't as reliable as a real gun.

Grumpy Scot

Correction: This scene opens with Raj with a drink in his hands. Yes! he has been drinking.


The Shiny Trinket Maneuver - S5-E12

Corrected entry: After Amy stalks off on Sheldon, Penny tells him off because she told him some good news about her paper being published, and he belittled her achievements while bigging up his own, trivial activities. She is very specific about what he did and why Amy reacted. How did she know all of this? She was nowhere near the table at the time and could not possibly have overheard their conversation. She might assume Amy is mad at Sheldon but she can't possibly know why.

Correction: Penny is behind them cleaning a table and you actually see her overhear what they are talking about.

Anastasios Anastasatos

The Countdown Reflection - S5-E24

Factual error: There is not a snowball's chance of Howard becoming an astronaut. He suffers from cardiac arrhythmia, something about which he is completely open. "Transient" or not this is easily detectable by a simple electrocardiogram, which is a fundamental part of the many medical examinations a potential astronaut will have to pass. He wouldn't even be allowed to start basic training. Note also that during his basic training he shows signs of severe stress and trauma which would inevitably trigger a cardiac episode. Even if it didn't the fact that he was falling apart at the seams would have him removed from the programme for his own good.

More mistakes in The Big Bang Theory

The Extract Obliteration - S6-E6

Stephen Hawking: Do you like brain teasers?
Sheldon Cooper: Oh, I love brain teasers.
Stephen Hawking: What do Sheldon Cooper and a black hole have in common? They both suck. Neener, neener.

More quotes from The Big Bang Theory
More trivia for The Big Bang Theory

Show generally

Question: How come Raj has no problem speaking to his mother, but, when around other women, such as Penny, he immediately stops talking? Also, why does he have to whisper in someone's ear if he wants to ask Penny something?

Answer: Because Raj's selective mutism seems to be caused by women that Raj sees (on some sort of conscious or subconscious level) as a potential sexual partner. An attribute that wouldn't apply to either his sister or mother.

More questions & answers from The Big Bang Theory

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