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: It's revealed that Sheldon rents out a storage unit that contains literally everything that he has ever owned in his lifetime. How is it that nobody else has ever known about this? He doesn't drive, nor does he take public transportation, and we can assume that he must make regular trips there to store any item that he no longer needs/uses. So he would surely need to be driven there by someone, most likely by Leonard, and he obviously couldn't keep it a secret as to why he needs to go there.
New this month Correction: While Sheldon does not like public transportation, he does take the bus when needed. There are numerous mentions of "bus pants" and "bungee cording himself to the seat" to prove he will take a bus when he has to.
Corrected entry: When they are marrying Bernadette and Howard, Raj is speaking straight to the women without alcohol. And it's the same people as he normally can't talk around.
New this month Correction: Although no alcohol is shown onscreen, it doesn't necessarily mean he hadn't already drank any alcohol already. There's nothing there to say whether or not he quickly had a drink before the ceremony, off-screen, whilst they were setting up on the roof.
Corrected entry: Penny takes Sheldon's onion ring and holds it with 2 hands. Camera cuts and one is hand is down in her lap.
Correction: The camera doesn't cut from Penny having two hands on the onion ring to just one hand. After Penny picks up the onion ring with two hands, the camera cuts to Raj squealing at her for a moment. She could have easily let go of the onion ring and put her hand down on her lap during this shot.
Corrected entry: Several times throughout the show, Leonard makes reference to having sleep apnoea, a condition where the airways close up when you are asleep and you stop breathing for periods of time before your body's reflexes kick in and wake you up. However we also see him sleeping numerous times but he doesn't have any form of cpap (Continuous Positive Airway Pressure) machine. This is vital for anyone who has sleep apnoea as it pumps air into the users airways via a nasal cannula or face mask to keep the airways open and stop the user from stopping breathing. Since sleep apnoea in the most extreme cases can cause death (depending on type of sleep apnoea) a cpap machine is vital and should be seen whenever we see Leonard sleeping or in bed.
Correction: There is no mistake simply because he chooses not to use one (if he even owns one). There are individuals with sleep apnea who don't use them and just deal with waking up in the middle of the night. If Leonard says he has to use a CPAP machine every night and then is seen not using one at night, that could qualify as a mistake, but this isn't the case.
Corrected entry: When using the whiteboard at the beginning, Raj writes "7:11" on the board with a red marker. Later on when Sheldon returns to the apartment with Red Vines, this has vanished from the whiteboard although nobody rubbed it out.
Correction: There is a red smudge where 7:11 was written. There was enough time for Sheldon to go out get Red Vines, so there was time for him to rub it off when on his own.
Corrected entry: Sheldon is very particular about sitting in his spot and not allowing anyone else into his spot. We learn later on in the series that he has been this way since Leonard moved in. However at the very end of this episode, we see Leonard sat in Sheldon's spot and Sheldon sat in the arm chair.
Correction: At the start of the scene, Sheldon attempts to sit in his spot, but Leonard doesn't let him, because his Physics Bowl trophy is sitting there and then Leonard moves slightly onto Sheldon's spot to make fun of him using the trophy. Presumably, he is just sitting on the arm chair because Leonard wouldn't move and he is just sitting in that seat reluctantly.
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. Then Leonard gets to shut the door easily like there is no extension cord plugged into the outlet and leading out of the apartment.
Correction: Having just watched this the lead goes slack and under the door.
Corrected entry: At the start when Sheldon and Leonard are sitting at the table, and then talking with Dennis, their soda cans on the table keep rotating themselves and the straws in them change position a couple of times too.
Correction: The rotating of the cans is due to the various camera angles being used in the shot. Same with the straws.
Corrected entry: When Leonard is standing outside the apartment his hair is tucked under the band of the wireless cam he has on his head, but when he is crawling on his hands and knees through the apartment his hair is out from under the band and is hanging in front of his face.
Correction: They also find a gift bag in this time so it's clear there has been a gap of some time. Enough to sort the headband out.
Corrected entry: Characters in Halo games can never be decapitated, as Penny states about Sheldon's player character.
Correction: Penny says "whose head did I just blow off?" This can merely be an expression for killing someone. Not necessarily a literal reference.
Corrected entry: Sheldon is an obsessive compulsive and picky person and he picks a pre-designated seat in all places. When he enters Penny's apartment to talk to her he promptly sits on the couch, which was not where he chose 'his seat' to be in the last episode of the first season. It seems out of character that he would sit there when he has a ready-chosen spot and that his nature is as it is.
Correction: In the season 1 episode mentioned, Sheldon says he thinks it could be his spot. Not decided, so there is no reason to assume he is completely set on that spot and he could have changed it.
Corrected entry: When Leonard returns from talking with Penny, the guys are playing Talisman. Stat counters are randomly placed on the board, when they should always be associated with cards. Then Howard rolls "double sixes" - in Talisman you advance your character by rolling a single die. Raj then acquires a sword without rolling - only the character that rolled would have acquired an item without additional gameplay.
Correction: Fountain of Wisdom, Pool of Life, and Magic Stream all put stat counters on the board to be picked up by whomever passes by. A Horse allows one to roll two dice for movement, and Market Day or Acquisition would allow someone to acquire items out of turn.
Corrected entry: In the discussion between Raj and Howard about "shiksa goddess" plus Sheldon's later mispronunciation of the word and Howard's correction, it is never clarified that the term applies only to a Gentile girlfriend of a Jewish man. No other relationship qualifies.
Correction: This is incorrect as it also applies to a Gentile woman who is the object of desire by a Jewish man. However, like many words, the appropriation of the word by English speakers has transformed it into any Gentile woman (although usually an attractive woman) and is as such, commonly used as a term of endearment rather than an insult.
Corrected entry: Sheldon suggests Rock, Paper, Scissors, Lizard, Spock as an alternative to Rock, Paper, Scissors because "Anecdotal evidence suggests that in the game of rock-paper-scissors, players familiar with each other will tie 75 to 80% of the time due to the limited number of outcomes." As a devout scientist, Sheldon would know that anecdotal evidence is no basis for reaching a conclusion because it is based on individual experience and subject to bias.
Correction: Presumably the "anecdotal evidence" is his own experience; within his group of friends they tie 75-80% of the time.
Corrected entry: Sheldon claims the X-Men were named so after the X in Charles Xavier's' name. In The X-Men #1 (1963), Professor X states that mutants possess an extra power that humans do not have. Xavier then says "That is why I call my students... X-Men, for EX-tra power!"
Correction: He may be going by the movie continuity, where the X-Men DID name themselves after Charles. (Likely in an effort to "dumb it down" for Penny).
Corrected entry: At the end of the episode Sheldon's sat nav voice asks "Can you name the four state capitals that are not served by the interstate system?" In fact, there are five, according to the Interstate System's website. Juneau, Alaska; Dover, Delaware; Jefferson City, Missouri; Carson City, Nevada; and Pierre, South Dakota.
Correction: Although there used to be 5 state capitols not served by the interstate system, the completion of I-580 means that Carson City is now served, hence there are only four, and the sat nav was correct. 580 was completed in 2012, the episode in question aired in 2013.
Corrected entry: Leonard refers to a never-ending game of "Bottle of Beer on the Wall" as having 'one times ten to the fourth' bottles of beer. One times ten to the fourth power is just one multiplied by itself a ridiculously large number of times, which equals one. That would be a very short game. Not a mistake a physicist would make.
Correction: One times ten to the fourth is 10,000.
Corrected entry: In the scene where Sheldon lists the things that were stolen from the apartment, he mentions several gaming platforms including PlayStation 2 and PlayStation 3. Other than that he lists games including Final Fantasy 1 to 9. You can't play those Final Fantasy games on any of the gaming platforms he lists though (Only some HD remakes are available for the PlayStation 3, but only as downloads, so you won't be able to steal the discs because they don't exist).
Correction: He lists the items that were stolen. Just because he lists games for consoles that weren't taken doesn't mean they weren't stolen. He either has the games but the console was not in the apartment, or he has the games and the consoles were not taken.
Corrected entry: Sheldon refers to the "Hillbilly Peace Prize" in connection with Penny. Sheldon would have corrected anyone else who said such a thing. He would point out that that word "hillbilly" refers to people who dwell in rural, mountainous areas in the US primarily in Appalachia, the Ozarks, and other less well-known mountain chains. Nebraska, where Penny is from, is rural, but being a Great Plains state, has no connection at all to the term, not to mention a lack of mountains.
Correction: Hillbilly is also an insult to those who live in farming and rural areas, which Penny's story certainly invoked.