I've known some pretty severe alcoholics and I can tell you they don't walk around giving eloquent soliloquies; they don't scream at the top of their lungs in their beds at night; the difference between their sober personalities and their drunk ones is more than just barely perceptible. Sure, The Lost Weekend gets many details correct about how an alcoholic could behave, but it entirely lacks emotional depth and specificity. Exactly what kind of a drunk is Don, you ask? Err... he's a drunk. You know.