My dad and I had a discussion about this type of thing last night but it was primarily focused on what is first, fire or shelter, after immediate medical needs and STOP.

My dad said fire is the first because of the radiant warmth.

I argued, and still believe, that shelter should come first so your body's natural temperature regulation can get a chance to do its job. Also, I think that any warmth gained from a fire could be taken from your body by wind or rain.

Obviously in an ideal situation fire and shelter could be constructed and used at the same time.

Dad and I never did come to any sort of agreement.
Patrick