One of the more well known arguments against FTL travel is this: If FTL travel were possible, then civilizations that have mastered it and put it to good use, would be swarming in the Milky Way and we should have already ment ET. But consider this: What if the local space around Sol were populated with a super advanced alien civilization. Now, this civilization has FTL travel already (that's how they colonized the place so fast). Now see, these ETs are very friendly and curios. They know were hear, and they know compared to them, were very primitive. But they want to preserve our civilization. They know that if they came in direct contact with us, that the idea of aliens being real to the general public, would make our civilization self destruct. So there hiding from us and watching us. Why have'nt we picked up there radio singels? Easy, they use communication systems we can only speculate at or have'nt even imagined yet. There waiting for us to become mature (if we ever do). Or maybe other civilizations die out before they have the ability to go FTL. Or maybe they just think it's impossible. Can this be true?