>> Besides, the visiting methodology of these aliens wouldn't match their alleged level of advancement (unless they evolved beyond what we on Earth call common sense), if you think about it
> How so? It's always good to understand whst other people think.
The post I linked from Eliezer explains it better than I can, so I'll just quote him:
> Their technology would not be such that, having arrived here across interstellar distances and then remained hidden, they'd need to fly around in large visible vehicles
> I have enormously wide uncertainty over the possible range of alien technologies. But I can use current knowledge of physics and chemistry, and the advance analyses that others have done of what technological possibilities those imply, to put a lower bound under alien technology that's comfortably above "needs to use giant flying vehicles for travel or surveillance".
> I don't need to know exactly what aliens are trying to do, to know that only a few and unlikely goals would imply a best possible strategy of flying around in sightable UFOs while staying otherwise hidden.
I think that about sums up my own views.