Factual error: The bulk of the film takes place in and around June (the end of the school year), but dead leaves are rolling by with the gust of wind at the cemetery. It isn't Autumn yet, since the finale takes place 5 months later on Thanksgiving. (00:43:10)
Factual error: A cordless nailgun takes about 2 seconds to recharge and cannot fire consecutive nails nearly as fast as depicted.
Factual error: The main character states that the photo plate of Lincoln has a crack in the precise location he was shot. Lincoln was shot behind his lower left ear and the bullet ended up behind his right temple. This is not the path shown in the picture.
Chosen answer: It's metioned in the filmakers' commentary that in every Final Destination movie everyone has a premonition (Of course), well it's also mentioned by the director, James Wong, that if death wants to kill them why give them the premonition in the first place? Well he believes that there is some other force out there trying to prevent death from killing these teenagers. That's where the premonitions come in including the signs therefore, Wendy's pictures are helping signs like voices or visions from other movies. It's just the whole "giving signs" thing is portrayed differently in this movie.