The physical fog that rolls in at night mirrors the internal "fog" of addiction and denial. It creates a literal and figurative wall that separates the family members even as they sit in the same room. Psychological Implications of Nighttime
In DLJ, the transition from day to night is not merely a passage of time but a symbolic journey into the collective unconscious of the Tyrone family. During the day, the characters attempt to maintain a facade of normalcy and "sunlit" civility. However, as night approaches, these defenses crumble. The "night emotions" that emerge are characterized by: DLJ - Night Emotions
Beyond the play, the concept of "night emotions" resonates with broader psychological experiences. The night often acts as a "space of passion, greed, love, and awakening" where decisions of the day are "tossed, turned, and dissected". An Essay on the Night | The Odyssey Online The physical fog that rolls in at night