Revealing mistake: Sam is supposedly far away from civilization, but throughout the movie you can see a ski slope in the background. (00:16:05)
Audio problem: After finding a large hollow tree to serve as a shelter, Sam proceeds to chip away at the interior with his hatchet, to make the space larger. But the sounds of the hatchet don't even come close to coinciding with the actual strikes of the blade. (00:17:05)
