All of which is destroyed in the end by deus ex machina
when the child is rescued.
I get the metaphors. The cold is the lack of human warmth. The cannibalism is about modern society. What's the deus ex machina
about then? "Let's give folks the happy ending; we'll make fun of the reader but clever
readers will be in on the joke." I didn't like it in Pulp Fiction
and I don't like it here.
Seriously, there are better disaster books, better father-son books, better survival books, and better cookbooks.