Ending [Spoiler]?????

[Yuhaney]

I think the idea was that people should leave the 'alien(s)' alone, and that's why Howard send the 'last' pieces of information about the Greenland and asked to destroy them so no one could ever find the place and finally alien(s) can be alone. But that's why Philip interested about it...

And the e-mail - was once again last piece of information.

That's my theory... Any one else? Theories?