Revealing mistake: During the scene when Scrooge is sitting in his armchair by the fire, the animation of the fire is badly looped and you can see it flickering as it finishes a cycle.
A Christmas Carol (2009)
1 revealing mistake - chronological order
Starring: Gary Oldman, Colin Firth, Jim Carrey, Steve Valentine
Factual error: At the beginning Scrooge is seen signing Jacob Marley's death certificate in the year 1836. English Birth, Marriage & Death certificates didn't come into being until 1837.
Ebenezer Scrooge: What do you want with me?
Jacob Marley: You will be haunted by three spirits.
Ebenezer Scrooge: I'd rather not.
Question: What is Mr. Scrooge's business exactly, and what does Bob Cratchit do?
Answer: Mr. Scrooge is a moneylender and Bob is his clerk. Moneylendering is different than something like a bank loan because interest rates are much steeper and usually the last resort for poor people who can't get bank loans. In essence he's a loan shark.
Bishop73