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.
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.
Corrected entry: Sheldon obviously changes the relationship status on Leonard's Facebook page to 'in a relationship with Stephanie Barnett'. At this point it would have been impossible for Penny to see the status update, because it only shows up after both parties have confirmed it.
New this month 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]".
Corrected entry: When the guys are practising for the Physics Bowl and they are sitting across from Penny, Leonard is sitting in Sheldon's seat, which Sheldon would never allow.
New this month Correction: In most cases, this would be true. But given the way things were set up, he had to pick a new, temporary spot for the practice. It's likely that their living room setup is too complex to change just for a short amount of time, which is why the practice area was set up as it was. Sheldon chose a spot related to the practice area so he would be comfortable, just like he chose a new spot when the gang went to the north pole.
Corrected entry: Bernadette tells Howard that she chose the premature ejaculation project because neither of them has any heart diseases. However Howard has stated more than once that he has transient idiopathic arrhythmia. Also in the previous episode he actually emphasizes that his family has a history of heart diseases and alludes to a cave painting showing one of his ancestors clutching their chest.
Correction: Transient idiopathic arrhythmia is not a disease, it is a disorder. They are different things.
Corrected entry: At the end of the episode, when Sheldon imagines going to the Grand Canyon to scream about Leonard, that's not the Grand Canyon, signs not withstanding. The location is Dead Horse Point State Park in Utah (near the town of Moab), with the view looking roughly south into Canyonlands National Park. [GPS near 38°28'12" by 109°44'30".] It's several hundred miles upriver from the Grand Canyon. [At least it is along the Colorado River.] The first national park sign looks authentic, but the small one at the overlook is fake, since that's not the Grand Canyon. And by the way, since it's just after New Year's, there would likely be snow at both the Grand Canyon and Dead Horse Point; the images used are not winter scenes.
Correction: But it's all occurring in Sheldon's mind. He does have an eidetic memory, but if he has never been to the Grand Canyon he can't remember it. He's imagining what it would look like if he were there.
Corrected entry: Sheldon's laptop has gone through several strange transformations throughout the series, but in this episode it takes the biscuit - it appears to be a Dell XPS with the back covered up, but the shot of Sheldon chatting only to Amy shows that it's apparently running MacOS X.
Correction: It is possible, though difficult, to run OS X on a PC. Given the technical genius of all four of the male leads, they could easily have done it. It could also just be a custom browser skin.
Corrected entry: At the beginning, when Leonard has won the online auction, we see a shot of his laptop computer screen showing an Apple Safari browser window with Mac OS X window controls, but the laptop is a PC, not made by Apple. Mac OS X can only run on Mac hardware.
Correction: It is difficult but possible (and a TOS violation) to get Mac OS X to run on a PC. The company Psystar even did it commercially. Given Leonard and Sheldon's computer knowledge, it shouldn't be difficult at all. Or they could easily just be running a custom browser skin.
Corrected entry: If Howard can hack into Blizzard's database so deeply that he can get the name and address of game players, he could easily restore all of Sheldon's stolen 'items'. Hacking personal details - a player's real identity and their home address! - is hardcore, detailed work that only an expert could do, compared to which adding a few extra items to a player in the game would be child's play.
Correction: Hacking the database to return items to Sheldon's account would also be traceable to Sheldon's account as cheating. That would get him permabanned if discovered, not a risk Sheldon wants to take.
Corrected entry: Professor Crawley states he discovered a new species of dung beetle (named after him) in a rain forest in Borneo. That is impossible - dung beetles do not live in damp climates as the fecal matter upon which they live degrades too quickly when moist. You can find dung beetles in Savannah grassland, semi-arid desert, some lightly wooded areas, but a rain forest? Never.
Correction: Never is a big word. Deltochilum valgum and Oxysternon pteroderum are two examples of dung beetles that live in rainforests.
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.
Corrected entry: Leonard and Sheldon live in 4A and Penny in 4B. Yet when they go to the mailbox downstairs, Sheldon's mailbox is the upper left one while Penny's is the third or fourth one from the left. Mail boxes have to be in apartment order, not necessarily for the tenant who could remember where their box is but for the mailman to be able to use the apartment number as to placement of the mailbox. Whenever a sub carrier would do the route, he wouldn't be able to follow the random pattern.
Correction: My first apartment building didn't have them in order. The boxes were marked with either the apartment number, the tenant names, or both.
Corrected entry: In his conversation with Missy Sheldon makes it clear that his superior intelligence is a result of a random, mutated gene. Since Missy isn't similarly intelligent she obviously isn't carrying this mutated gene (which would be a billion to one shot anyway) so her offspring wouldn't inherit it. Sheldon would know this - his offspring would carry the mutated gene for superior intelligence, Missy's would not. His concern for her breeding potential is completely misplaced, and Sheldon is never wrong!
Correction: It has never been established that Sheldon is never wrong. In fact, throughout the whole series Sheldon has been proven to be wrong many times. The only mistake here is the incorrect interpretation of the Sheldon character by the viewer.
Corrected entry: Sheldon asks Missy why she doesn't tell her friends that he is a toll taker on The Golden Gate Bridge. There are no toll takers on the Golden Gate Bridge. Tolls are paid by credit or debit card, a prepaid account or by invoice to the registered car owner's address. There is no way Sheldon would not know this.
Correction: He knows, his point is that telling people that he's a rocket scientist is equally as absurd as a non-existent occupation.
Corrected entry: When Leonard tells Sheldon to hand over his Nintendo DS, Sheldon gives him a shiny aqua console. The Nintendo DS has never been produced in that color: the console is actually a 3DS, not a DS.
Correction: Semantics. To most people, "DS" is sufficient enough to specify all of the Nintendo DS consoles. The same way that "Xbox" is sufficient enough to specify the Xbox 360.
Corrected entry: At the buffet table when the gang gets food, Howard walks in with his 'date.' Between shots, as he walks in, in one shot Sheldon puts his right hand up on his plate. In the next shot his hand is down.
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.
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.
Corrected entry: While the group are trying to figure out how to play Halo without Howard, Leonard jokingly suggests cutting Raj in half. Raj responds, "Oh sure, cut the foreigner in half. There's a billion more where he came from." But Penny is in the room with them, and they're not drinking, so there's no way he should be able to talk in front of her.
Correction: He very well could have had a "drink" before Penny turned up. The table is filled with drinks, indicating they have been there a while.