Objects like a toy cube move when hit by a larger object. This manifests in society when she is hit with horrible news or disaster that could possibly end her repetitive lifestyle, meaning she changes not only based on her emotions, but also her personality and other characteristics. In the novel The Children of Men written by PD James, their civilization lost hope due to an excruciating change in the sperm count of human men, which reduced the life expectancy of human beings to nothing. 'Homo sapiens has come to an end. Similarly, in the film I am Legend directed by Francis Lawrence, it is also based on humanity coming to its conclusion, but this is due to a cure for cancer which has turned into a deadly strain. This disease has spread throughout the world, killing eighty to ninety percent of humanity. Some survived and became rapacious and zombie-like, called "Dark Seekers" who emerge after sunset to prey on humans who survived and are immune to them. The novel and the film have two similar traits which are the destruction of humanity, and also the reconquest of humanity thanks to a...