Wilderness Survival

[RunDownHouse]

We're having some technical problems at work today, so with our stuff down we've been having a conversation about wilderness survival. Here's the premise: you have a good knife and the clothes on your back (light clothing, maybe something like boots, pants, and sweatshirt). The environment is somewhere in the midwest/midsouth, so the temperatures can get cold, but not freezing. Say it might be as cold as 35-38 at night and as warm as 55-60 during the day. It will rain occasionally.

How long could the average person survive? What would be the best strategies for survival, and what would be the greatest dangers?

I've been taking online survival quizzes all morning, its kind of fun.
Quiz
Cold-weather Quiz