An interesting film which manipulates three distinctly different characters by a fairly simple physics lesson. I don't say this to demean the film, quite the contrary, it is just this principal that the story emphasizes - if you isolate any one subject (science, politics, art) from any other part of life, then it really serves no purpose. The dark side of me would have written quite a different ending. As the three hunkered down looking at the sand, I would have had a nuclear mushroom cloud appear on the horizon. A good movie, watch it with some of your more open-minded friends, with a good bottle of wine - and see what sort of sociological improvements YOU come up with!