Other mistake: When Kimberly gets in the ambulance at the hospital to drive it into the lake she shifts it upward instead of downward to go from park to reverse.
Other mistake: Kat is trapped by the log and the car door is closed. When she drops the cigarette it looks as if the door is off, and she could get out.
Chosen answer: No it simply means that Tim was not supposed to die by the puffer fish. He was meant to be saved so that he could die later. The movie shows multiple instances where someone almost dies, but at the last second is saved. It's a common way to build suspense.
shortdanzr ★