Other mistake: In Chapter Seven, while observing the other camping families, Harry sees babies and toddlers. It is mentioned that he has never seen wizard children who are that young. However, in the previous book, he spent three weeks exploring Diagon Alley and staying at the Leaky Cauldron. No way did he spend so many days there, wandering around shops, and not see a single baby or small child.
Factual error: Harry says to Sirius in one of his letters that Dudley chucked his Playstation out the window. However, Book 4 takes place in 1994, and the PlayStation wasn't launched in Britain until 1995.
Question: In the first chapter, Voldemort wouldn't let Peter find another wizard for the ritual because he didn't trust Peter to not run away. But why not send Barty Crouch Junior, whom he does trust, to find someone? Then he could have been revived sooner, as Peter said.
Answer: Barty Crouch Jr was already looking for Harry and trying to get to Hogwarts.
Answer: Because Crouch was a notorious dark wizard who was supposed to be locked up in Azkaban. Crouch had to be free to take over the life of Professor Moody. Even if they could find another person, Voldemort still wanted Harry for the ritual.
Greg Dwyer