inside the mind of a paranoid schizophrenic anxiety-ridden mathematician. despite the movie called pi, i dont consider the math part to be the most important aspect. it is the basis for the guys goals, but what this movie does best is paint the horrors faced with such disorders. depressing grey scale, unsettling darkness/contrast, delusions, anxious light flickering and soundtrack, and the idea that everything is coming after him with his reactions to it. some interesting themes of religion too