Based on Miles’s memory of Dad breaking Joe’s arm, it is clear that their father’s descent into alcoholism has been long and arduous. Joe’s reasoning for going to live with Granddad is revealed, further solidifying the brothers’ grandfather as a stand-in father figure amidst Dad’s violent abuse. It is unclear who Dad was referring to when he told Joe that he was “just like him,” but it is clear that there are secrets being kept in the Curren family and that Dad harbors inexplicable, destructive blame toward Joe.