In support of "Roadside Picnic", if they've been hanging around all these years and just making the ocassional look-around and flybys without landing on the white house lawn and asking us to join the Interstellar Federation, we must be extremely unimpressive. Basically, life is common in the universe. We are a somewhat interesting tourist attraction and pit stop on the way to alpha centauri or whatever, but not really that special. They get here, pick up water and air maybe, take some pictures, some dna samples and fly off to wherever they were on their way to. Everything we have here they have in a million other places all around the galaxy.
The breakaway civilization seems more plausible if one assumes that travelling interstellar distances is flat out impossible though. However, there could be a mix of the two...
Now if this is all just a bug on the windshield "swamp gas", I understand the downvotes, but otherwise please tell me how it's not one or the other given the evidence.
1.http://www.theeventchronicle.com/study/breakaway-civilizatio...