Yes the movie is filmed in beautiful Montana - though I do not recall any winter scenes and those must be part of what formed young boys growing up there. Equally cold should be the religious view. This is somewhat reflected in the house. It can be especially seen in the contrast between the family of the future bride (why not see the wedding?) Methodists ("Baptists that can read") and that of the groom - Presbyterians. This might have played out somewhat like the contrast between families in "My Big Fat Greek Wedding". But this does not seem to be the main point. The main contrast is between brothers. Suppose the one has religion and the other has fishing. One becomes a professor: the news sends mom into a most embarrassing explosion of joy. The other wants to be a professional fly fisherman - but there is no such profession. This frustration leads to the conflict in Paul who clearly is not full of joy with anything else he does. Booze and a wonderfully though too briefly developed character of an Indian woman - (if only she could have played a bigger role in more ways than one!) are all that keep Paul from the deep end - even Presidents don't consider fishing with enough seriousness. "What are you going to catch them with?" "The end of my line." Fishing might hold all the answers - especially if you listen to the voices under the rocks - but society demands something more and Paul can not manage this. For any parent that worries about losing one - or several - how do you know they are saved? - this is a mortal dilemma. Yes, we can love them completely even without understanding, but is this a flaw in Presbyterianism? Is that a sufficiently emotional religious connection with the divine in man? Baptists lose some of their own too - and to the same things. "Why do the ones who need help the most refuse to take the help they are offered?" (I am sure I did not get that quote correctly but it is close...) Good question.