this movie can be interpret on many different level . don not listen to the other comment bash the movie and say that it be a played again story or w or e and that it be just about drug . it have very overt superficial metaphor about drug while however and the rest of the movie ( and why i think it be personally make ) be really not about that at all . it be really mocking psychology and the conditioning of society . it show and for a split second and that the main character brother be watch those sick video online . why . my interpretation be that it be to demonstrate that all of this gruesomeness that we be expose to make it easy for u to be mechanical in our profession instead of see people a people . as far a the scene about logic and it be also reach out to the people who be in the federally mandate 1 % smart class who be confuse and frustrate because life isn not a predictable and mathematical and logical a it seem on a macroscopic level . you have to apply heisenberg uncertainty principle ( along with all the other law and principle of uncertainty ) not just to physic but to life and leave room to change your plan and adjust along the way . one of the best movie i have ever see . it just might go way above your head while it isn not for you it be for those people who be be have trouble cop with life not work out like a math problem . when you be critically analyze a movie or write your critical review try not read the back cover first ( write by marketer and parapsychologist ) .