Harry's right, that's probably the hardest thing this movie will have to do. The characters in the book felt so hollow, almost as if they were not human but rather shells of humans who trudged forward in a combination of utter desperation and that little spark of hope that the Man kept alive in the Boy. At times I feared their interaction with other humans, because the tiny ember that kept them going was so vulnerable to the elements that it was constantly on the verge of fizzling out. I don't know yet if the film portrays that struggle in a way that makes sense to me, as I haven't seen it yet, but that's what I will be looking for when I do.