I have no idea whether there are aliens, or whether they are visiting, or how they could be doing it. A little over a century ago we had no idea that matter bended spacetime, so who knows what we will know about FTL in another century.

> 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.

> 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.