Corrected entry: Producers Brad Fuller and Andrew Form were keen to show the actual definitive origin of Jason Voorhees' hockey mask which was always a slight mystery in the original series. Quoting from an interview; "Yes, you definitely see where the hockey mask comes from and why he puts it on and all that. It's like Part II to Part III for us - Part II is the sack and Part III is the mask - and we took them both. It is a story point and hopefully we've shot it properly in a way that when he takes off the sack and puts on the mask, he is now the Jason that everyone knows and loves."Hamster
Corrected entry: If Jason didn't intend to kill Whitney, why did he run up to her and swing his machete right down on her to the point where he wouldn't be able to stop? It's just to trick the audience, but makes no sense in the actual movie.