SaddamHuseinovic wrote:If the natives had killed columbus and his ships they would be still alive.
We would also need detention camps for Alienlovers/Traitors.
UN should be transformed in an unified confederation.
The 5 Vetopowers should mobilize, and accept foreigners in their ranks.
Well, you seem to be assuming that you can "fight" them.
The reality is, you could amaze the largest army of neanderthals, arm them with their best epoch-accurate weapons and knowledge and they still would not be able to down an SR71 flying over their heads, lead alone kill the pilot or mount any sort of retaliation.
The breath in advance of technology and available potential military power difference between any sort of intelligent alien race that sends any sort of alien scout/personnel/fleet to our planet, would be far more unbalanced (in their favor) than the difference between said nanthertheal and ourselves.
We could, potentially destroy probes and small alien devices that carry no pasangers depending on their complextiy and defensive features. We cannot defend against any out of this solar system "intelligent invader". In fact, if there is any alien race out there, with the capabilities to come and visit us, if they have any intention to destroy us... they don't even have to come to our planet, they can simply blow us out of existance from their own settlements wthout even coming here. The technology needed to basically evaporate our atmosphere from millions of ligthyears away is something that even current humans know how to make, and achieving such technology is far more easily achievable than interstellar travel and certainly faster-than-light travel, the latter of which, we don't even know if it is possible at all.