Zeris posted:

Paul was an idiot. For all of his forward thinking and brutally logical actions, if there was a possibility of an infection in the house, the first thing to do would be to barricade the room shut or else kill everyone in it (if waiting a few days isn't an option).

What I suspect the director had in mind was for viewers to witness Paul becoming more empathetic and human, indulging himself in a little bit of illogical behavior in the name of compassion and hope for a human civilization which might one day return (embodied in his love for his son). But that didn't really come though. Maybe he should've smiled once or twice, and the drinking scene where Dad #2's "brother" is revealed as a white lie should've been cut. That was an unnecessary addition to the tension.

Also agreed on the dream sequences. Imparting narrative through dreams is the oldest mistake in storytelling.