It’s all about me.
Thomas’s attempt to verify the reality he created is demonstrated in his return visit to the park. He sees with his own eyes the body he observed in the photo he took earlier in the day. Why he does not bring his camera at this point, we can only guess. A lack of flash, perhaps? With a lack of photo evidence of what he witnessed, he seeks the validation of his editor, wanting him to see the body for himself. He enjoys having the power of knowledge and chooses this path instead of reporting the body to authorities. He needs the ownership of this knowledge in the form of a photo to find value in his own life. His own reality.
His need for power is also exemplified in the scene with the guitar neck. He meanders through the crowd of seemingly dumbstruck concert-goers, save for two people dancing as if in their own world. You would think that everyone would be dancing and screaming. It begs the question of whether the crowd, as we see them, is HIS perception of this group of people - a group of people with no value to him outside of the eye of his camera and with no real identity. The crowd shows absolutely no emotion until the guitarist throws the neck of his destroyed guitar. He fights to obtain that which everyone wants, then discards the item like a piece of trash on the sidewalk. Suddenly this object has no meaning to him, much like the crowd did when he first entered the room. And much like the models he interacts with in his day to day life.
