"Gattaca" isn't aging as well as I thought that it would but it's still an engaging if minor key/ subdued science fiction vehicle that takes its science more seriously than its fiction which turns into a more procedural whodunit.  But before we get to the end resolve of the non-essential mystery of the movie and the surprise ending (someone was killed at a space launch site, but who could it have been, and why?) we are treated to a pretty prescient story about how society had modernized after carefully controlling the genetics of children at birth.  Life expectancy is up, productivity is up, currency for the genetically superior population is up, as are other character traits such as intelligence, mental acuity and alacrity, physical conditioning and beauty while certain other non-desirable traits are down or removed such as anti-social personality and hostility, tendency toward violence and uncontrolled emotions, etc.  In short the world of Gattaca is supposedly moving toward a manmade utopian ideal but the lower classes, those persons (usually older) who were borne of natural circumstances with all the variables that come along with the unknown and unpredictability within human nature, are the menial servant class.  Their dreams are restricted; their lives are limited.