Janek and pilot´s altruism...

@Sambojim you are becoming annoying , you dont even answer to the thread ..you just put there some hate and nothing more . ... @centrosphere ...i think the main problem is the total change of attitude of Janek , but that is played quite well ..however it could have needed a bit more time to develop ..the scene is great btw . The only big problem ive with the scene is that there is no way that janek would have leaved the other 2 co-pilots to die with him ...there were other 2 places in the ejecting pod of Vickers and really why they would have refused to escape ?? So at the end Chance and Ravel deaths are a bit of a waste .

Its okay man, a lot of us here are trying to figure out certain motivations and plot holes but it's just not meant to be. There is nothing to figure out. Its just poorly written. Once you accept that fact the easier moving on will be.

If you visit the Weyland website, by this time they have already terra formed plenty of planets; literally millions of humans throughout the universe. I think centrosphere was on to something. http://www.projectprometheus.com/newworlds/

I don't think there were numerous other fully-formed colonies with military factories. It's only 80 years in the future. I got the impression they had begun basic terraforming, but it takes a long time after that begins before the place is actually habitable.

Sorry about the multiple posts.

You don't lose the homeworld, man. That's Rule Number One. You never lose the homeworld. Janek was always pretty serious business when it came to xeno-lifeforms on his ship. He didn't try to stop Vickers when she lit up Holloway, and he was the one that killed zombie!Fiefield. The idea of that stuff getting back to Earth is pretty terrifying, and it isn't difficult to believe a man going all-out to stop it. Not only that, but Janek's character didn't exactly strike me as the kind who had much to live for back on Earth. He likes getting laid, but left the planet with most human women on it, as he pointed out to Vickers. That means that he doesn't place much importance on it, and no other real reference points are given to him. He looks like the kind of guy who has been flying around the galaxy, so he doesn't have a lot holding him back. All of this gives me no trouble believing that if he found something worth dying for (like holding the homeworld), he would take it.

This is typical 'altruism' not atypical. Saving the earth will improve janeks fitness enormously as he has all his relatives there basically. This is typical of 'altruism' in nature. It basically happens to improve fitness (improve mathematical chances of survival of your genes). A good example is taking care of siblings children which we see in alot of species.

@hugoguzman, galacticnorth, The pilots can be altruists but they are also rational (they are engineers). They know that the Juggernaut goes to Earth, but they know nothing about a) the antimeasures the Juggernaut could deploy against the incoming Prometheus; b) the ability of the Enginner onboard the Juggernaut of transmitting a call to the other Engineers on takeoff. Both possibilities would made the demise of the Prometheus still more a waste. I think that the more rational approach would be to go fast to the nearest most developed human colony and organize a party to reclaim Earth and fight the Engineers...