Break on through to the other side
The kid's psychosis had taken the shape of a full-fledged Gnostic worldview. He believed, basically, that he lived in the Truman Show. The world was just a stage set. The people around him were just actors. And he decided he wanted to meet the director, the Demiurge himself.
I played with the same thought myself as a high school nerd. But I find what follows kind of touching. To meet the director, our friend the psychotic teen figured that he would have to do something that wasn't in the script. Something that could never be accepted as part of the script. Something so heinous that the real powers behind all this illusion would be forced to step in, yell "Cut!", and talk to him. Something like trying to murder your best friend, who suspects nothing.
So what the murder attempt tells us about the kid's world view is that he really believed in good -- and evil. He really believed that there are crimes so evil that it is impossible to commit them. I'm sorry that he was wrong.
[More blog entries about gnosticism, trumanshow, psychosis, crime, murder, Stockholm, Sweden; gnosticism, psykos, brott, mord, trumanshow.]