As for the story's central theme, I'd circle back to a point I noted in Part 1: self-identity. The Protagonist (Stan) is confronted every step along the way with this question: Who are you? Ironically, while he poses as someone who can perceive inner truths of other people, he is blind to his own truths.

Or maybe more accurately, he knows stuff about his inner psychological nature (after all, he tells Lilith that he's not a good person), but he refuses or resists embracing that self-understanding. He keeps saying, "I'll never be like my father, " then ends up becoming an alcoholic - just like his father.

In the end, who is he? He's the geek. He has become what his father saw him as and treated him as: someone unworthy of love. I'm guessing Stan internalized that sense of worthlessness with a deep, deep sense of insecurity, even self-loathing, that he is at his core a despicable creature.

This theme of perception runs throughout the script as touched on by multiple characters in many different circumstances. For example, there is a tiny bit of business between Stan and Molly when they have their first serious interaction, the merry-go-round scene:

https://www.youtube.com/watch?v=-OZFAtJtAHw

In talking about her father, Molly says: "'Mary Margaret Cahill, don't forget to smile,' he said. I don't like to smile, but I sure as hell liked to smile for him."

The father's perception that if Molly smiled, she was happy. Molly's perception that if she smiled, her father would be happy.

Of course, Stan's whole reading minds act is based on perception, that is the audience or clients believing that what they seen and hear, Stan's readings, are accurate.

But Stan realizes, unfortunately too late, that the perception he has of himself as someone who is better than he actually is (read: geek) is a lie.

Next: Dialogue