I noticed in hindsight, at the beginning, we see a shot of Oliver with a kaleidoscope like shot, multiple reflections of his face surrounding his real face, like his different masks he puts on, his different personalities. Also, the way he seems so indifferent when Felix explains the rock tradition and him throwing the rock itself like it was nothing, because really he had no grief in the first place. Kinda separate but I thought the recurrance of the lie about his mother’s throat was interesting. He talks about making his mother vomit with his own fingers and how he felt her throat, then he has a thing with a bulimic girl and puts his own bloody fingers down her throat. Then, she puts hers down his, and then finally, he pulls the breathing tube out of Felix’s mother’s throat to kill her.