Corrected entry: In the scene where the girlfriend's hand is frozen to the metal bar 50 feet in the air, she forces her hand loose and 1/2" of skin and blood is left frozen to the bar. Later on in the movie, they show the bar and her sitting there, and not even a mark on the bar.
Corrected entry: Why didn't any of the staff at the slope notice a car left in the carpark at the end of the day? Their vehicle is shown to still be there at the end.
Corrected entry: Throughout the whole film, almost no exhalation steam is visible when characters talk. Mind, it's winter and the air is freezing.