I put off seeing this film because I thought it would be uncomfortable and anxiety-inducing (and gross), so I just thought, "Hey, i don't have to see EVERY movie. I'll skip this one." But I was wrong.
My cinematographer friend brought it up and said I might have trouble with *that scene* but that it was worth it for the payoff. Was she ever wrong, too! The ONLY scene from which I did not look away (due to other things I was doing and distracted by during viewing) was *that scene* - which was surprising. I read an article, interviewing Aron Ralston and reviewing the film, and Aron says he finds the arm scene euphoric because that's how he was feeling at the time. He figured it out! He was going to live! Knowing that made me feel the same way during viewing.
If anything, this movie, and Aron's experience, is about remembering that no one can do it alone. We are a social species, and while it's great to be able to accomplish things oneself, we have to rely on one another. It's a reminder to be in the moment with our loved ones.
Oh - and that's why you ALWAYS leave a note.