Goofs for
Monsters, Inc. (2001) More at IMDbPro »

• Revealing mistakes: Towards the end of the film, when Mike and Sulley meet the CDA "number 00001", several different CDA monsters have the same number, 00112 - the same texture had been used on several models to reduce modeling time.
  
  
• Continuity: In the international version of the video/DVD several instances of written English text have been replaced with universal symbols (see Alternate Versions). However on several occasions they switch back to the original appearance. For instance: The "Standby/Scare" sign in the factory, the "Contamination alert" on the video wall during the first 2319 and the joke on the video wall in the final scene.
  
  
• Plot holes: Sulley makes Boo giggle a few times when they play hide and seek in the restroom, but the power never spikes and no lights blow out. (According to the commentary on the DVD, the creators realized this but chose not to address it.)
  
  

• Continuity: In the opening scene when the monster comes through the door, he closes the door most of the way, but when the instructor does a review of what the student did wrong, the door is left mostly open.
  
  
• Continuity: The scoreboard on the video wall sometimes shows decreased values for some monsters, for instance when Waternoose talks to Jerry and just before the first 2319.
  
  
• Continuity: When Mike walks away after congratulating Celia (in the beginning of the film) he passes a marking in the floor. In the next shot, viewed from above, he is much nearer her than in the shot before, which can be seen by the floor markings.
  
  
• Revealing mistakes: When Mike is talking to Roz about his paper work, Mike's lip crosses through the counter at one point.
  
  
• Continuity: When we see Mike wake up Sulley in the beginning, we see Sulley's alarm clock on his right-hand night stand, but later when Boo jumps into Sulley's bed the alarm clock is not there.
  
  
• Continuity: When Sulley goes to put Boo back in her room, the clock above the door of the scare floor clearly indicates 5:50; when he runs out of the room it indicates 6:50.
  
  
• Continuity: When Waternoose congratulates Sully on an 'impressive display' of scaring, different shaped monsters are just coming in to shot to walk past behind Sully. The shot cuts to Waternoose and then back to Sully in just a couple of seconds and the monsters behind him have gone.
  
  
• Miscellaneous: On the Scare Floor scoreboard, all of the characters except for Randall (Boggs) are listed by last name.
  
  
• Factual errors: In the first scene of the movie in the child's bedroom an alphabet border wraps around the room. In the border the letter J is backwards.
  
  
• Continuity: When the CDA are called the first time in the film, there is a helicopter flying towards Monsters Inc. A Vehicle moves in front of the helicopter whilst it is still flying but the helicopter doesn't come out the other side.
  
  
• Continuity: When Randall slithers through his door on the Scare Floor, after it's closed you see the handle is on the left side. When he emerges, the handle is on the right side.
  
  
• Continuity: At the end of the film, after Mike got his first customer, the one when he burped out the mic, Mr. Sullivan came to talk to Mike and the "Think Funny" banners were still there. But after Celia called Mike, the "Oh googly Bear" at the next shot, the banners were gone.
  
  
• Revealing mistakes: When Mike is about to put his contact lens in, the lens does not reflect in his locker mirror. His hand reflects as if it is holding nothing. This is most noticeable in the Blu-ray version.
  
  

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