[Few people realize that the 1997 cult hit GATTACA was actually just the first film in a three-movie trilogy. The final two movies, directed by the legendary Moira LeQuivalence, were flops which only stayed in theaters a few weeks and have since become almost impossible to find. In the interest of making them available to the general public, I've written summaries of some key scenes below. Thanks to user Begferdeth from the subreddit for the idea.]
GATTACA II: EPI-GATTACA
"Congratulations, Vincent", said the supervisor, eyes never looking up from his clipboard. "You passed them all. The orbital mechanics test. The flight simulator. All the fitness tests. More than passed. Some of the highest scores we've ever seen, frankly. You're going to be an astronaut."
Vincent's heart leapt in his chest.
"Pending, of course, the results of the final test. But this will be easy. I'm sure a fine specimen like you will have no trouble."
"The…the final test, sir?"
"Well, you know how things are. We want to make sure we get only the healthiest, most on-point individuals for our program. We used to do genetic testing, make sure that people's DNA was pre-selected for success. But after the incident with the Gattaca Corporation and that movie they made about the whole thing, public opinion just wasn't on board, and Congress nixed the whole enterprise. Things were really touch-and-go for a while, but then we came up with a suitably non-invasive replacement. Epigenetics!"
"Epi…genetics?" asked Vincent. He hoped he wasn't sounding too implausibly naive – he had, after all, just aced a whole battery of science tests. But surely there were some brilliant astronomers who didn't know anything about biology. He would pretend to be one of those.
The supervisor raised an eyebrow, but he went on. "Yes, epigenetics. According to studies, stressful experiences – anything from starvation to social marginalization – change the methylation pattern of your genes. And not just your genes. Some people say that these methylation patterns can transfer to your children, and your children's children, and so on, setting them back in life before they're even born. Of course, it would be illegal for us to take a sample and check your methylation directly – but who needs that! In this day and age, everybody's left a trail online. We can just check your ancestors' life experiences directly, and come up with a projection of your methylation profile good enough to predict everything from whether you'll have a heart attack to whether you'll choke under pressure at a crucial moment. I'll just need to see your genealogy, so we can run it through this computer here…you did bring it like we asked you, right? Of course you did! A superior individual like you, probably no major family traumas going back five, six generations – I bet you've got it all ready for me."