Criticism: Talking Points

Fargo:
1) Why is the film called Fargo?
2) Is there a reason for the scene in which Marge meets an old school friend at a hotel restaurant?
3) At the beginning of the film we're told that it's based on a true story. But it isn't. Why are we given this misinformation?
4) How does the cold weather that we see in the film affect your experience of watching it?