Another part that is well made is the creation of the atmosphere of oppression. Mainly because of what you see (the controlles police makes nearly in every moment of the film, or because you see all those people that make analyze others' genes in order to see if they are valid or in-valid, and so on) but not only. This is the sci-fi I really like. But, at the opposite of all the premises that I expressed earlier, I think that the directors failed in create that empathy between the actors and the spectators, that in a movie based on the feelings and hopes of the characters are probably the most important things to transmit.
'Gattaca' is a fine movie, with good performances, an interesting story, and a shocking ending. However, even with all of the movies thought provoking themes, something just wasn't working as it should. I found myself not as effected by the movies themes as I should have been, and odd character choices detracted from the movies overall quality.
Yes the tech is dated, although we're all thumb printing to access our iPhones now. But this remains a really good piece of Sci Fi with a strong story at it's heart.