Spoiler for I am Legend.
Gene, even in this movie version, its all about evolution. The retro-virus thats used to cure cancer is intended to recombine the patients DNA thus fixing cancer cells. Instead it continues to mutate and rather than just curing cancer, it causes the infected to restructure their DNA becoming a new species they are no longer human. His cure that hes trying to create is another viral strain that will reverse the process. Hes only
In the original story the vampires were portrayed as two types. Those who were pretty crazy and were being killed off by doing stupid things (like staying outside) and those that were pretty damn smart. The smart ones were forming a new society even though they had trouble going out in the day. By the way, Blade is sort of a similar plot/storyline.
partially successful (the Rats and Ruth.)
The ultimate struggle portrayed in the movie is survival of the fittest (the lion metaphor at the beginning of the film). Whos going to become top of the food chain, humans or the new vampires or something else?




