#3 is on the money. Like, what if millions are watching you on TV and your mind blanks? You do a wild take by revealing dark, hateful impulses to a chair.
All this fetishizing over image quality and the picture goes to hell for lack of a little Windex.
Another excellent analysis of the Memento's genius: http://www.salon.com/2001/06/28/memento_analysis/
Also: Any movie that can be "spoiled" by uttering a few words is not a very good movie. I'm looking at you, Dead Bruce Willis.
The supplied information is inadequate. Any frostbite reported? No need to amp the already second-hand information until all the tales come in.
This topic demands a mention of the Sarah Jones tragedy.
Okay, okay, I admit speculating is fun if we've been there, been stuck in a tough tough clime with only loyalty and a near-masochistic respect for deadlines to keep us there. RE the alleged hard winter conditions, I wonder if the "-25 degrees" figure comes from boasting or windchill reports. In my experience, -20 and colder is when batteries say "we're outta here" faster than you can shoot. Maybe it was super-cold a lot; more than likely the temp dipped that low briefly and some crew ran with that number to frame the entire shoot. (Once someone invents a way to look up historic weather records, someone should do just that.)
A lot of savvy crew people are mountaineers and/or backcountry skiers. They know how to stay cozy in these conditions. Modern winter clothing is amazing when deployed with real experience.