Visible crew/equipment: In the finale, Jessica runs over to Jason from behind and she stabs him in the heart with the dagger. Then, Jason lashes back and hits Jessica, and she goes flying backwards. Absolutely anyone can see the large blue crash mat that she lands on (cropped/edited out in some versions). (01:20:25)
Continuity mistake: At the start of the film Jason chases Agent Marcus from the cabin, and she is barefoot. But in the shots of her running through the woods, in some shots she is barefoot, in others she has white socks and big black boots on, and in others she has flesh-coloured trainers on. (00:05:10)
Continuity mistake: On the field where Jason is being shot, Jason is equipped with a machete in his right hand. However when they drop the bomb onto him, Jason hears it and looks up, and in this shot you can see that Jason's machete has disappeared. (00:06:35)
Answer: Of course he would be reborn exactly like he was before he was blown apart. Which is why he needed a blood relative to do so.