Factual error: In every version of the story, including the book, in the scene where Augustus Gloop is sucked into the chocolate pipe, there's no pressure below him (it's an open river, with the pipe sticking into it) so the pressure must come from a vacuum at the top of the pipe. Augustus would have had his lungs and innards sucked out until he was thin enough to pass through the pipe. He would not have survived.
Willy Wonka & the Chocolate Factory (1971)
1 factual error - chronological order
Directed by: Mel Stuart
Starring: Gene Wilder, Jack Albertson, Roy Kinnear, Julie Dawn Cole, Peter Ostrum
Revealing mistake: When Charlie and Grandpa Joe drink the fizzy lifting drink and are floating in the air you can see the hook that is connected to the wire that Charlie is being held up by.
Mr. Salt: What is this, Wonka? Some kind of fun house?
Willy Wonka: Why? Having fun?
Trivia: Peter Ostrum won the role for Charlie while acting at the Cleveland Playhouse children's theater in 6th grade. He had no acting experience after that, and is now a veterinarian.
Question: How did Willy Wonka know that Charlie and Grandpa Joe had stolen Fizzy Lifting Drinks? The entire time they were in the room they were completely alone and security cameras obviously didn't come into existence at the time.
Answer: Closed circuit security was invented in 1942 and came into common use in the late 60s and early 70s. Beyond that, Wonka could have had Oompa Loompas monitoring the group or simply noticed that they were gone and guessed.
Suggested correction: In the book Charlie ask Mr. Wonka if all the other kids would be all right and he tells him yes they will.
This isn't a valid correction because the point of the mistake is that he wouldn't survive, as shown. At best you're saying Wonka lied to Charlie.
Bishop73