i must say that i wasn not impress at all and probably because i be expect much more from this movie . maybe an accent on religion v science or on the meaning of life and not just a few line . so and if you expect something to think about after you see this movie and do not . it more psychological than philosophical . i vote 4 because of the end and it clear up a bit and because i have a great respect for bbc documentary . there be a couple of very interesting scene that actually give some sense . it be a brilliant idea to add it in a movie relate to theory of evolution and too bad that this wasn not the main subject . ah and i just forget to say that for more than 1 hour and the movie be quite boring and in a way and cruel .