Originally posted by /^Blackmagik^\
you're totally missing the point. the basic premise of natural selection is based on one thing. survival of the fittest. the weak are weeded from the herd. whether these people know they are defective or not is not the point. it's when they are treated and kept alive to pass on those defective genes to offspring that is the point. if it were not for modern medicine i think it would take only a few generations before the cancer rate dropped dramatically along with other genetic disorders.
....aka artificial selection. natural selection has to do with environmental factors that weed out phenotypes of a species not adaptable to that environment to the point where it makes a change in the gene pool of the species. modern medicine is not an environmental factor.