[PatrickHenry]

I believe we are alone. Do you?

I assume you're speaking of intelligent life elsewhere. At the moment, yes, we're alone -- by which I mean only that we've not been contacted. But it's difficult to conclude that we're the only intelligent life in existence. Contact is possible, via signals. Actual interstellar travel is a whole different topic.

[PatrickHenry]

Get your tush into this thread! [Durned astronomers! Always star-gazing when you need them.]

[Pharmboy]

Yes...I should have been more explicit. I believe life has arisen elsewhere, but intelligent life, IMO, is a one-off that (likely) only happened here because of a great series of coincidences.

No, it's not falsifiable, but that's what I believe, fwiw.

[Vaquero]

You know we are at a stage in our technical development where we use various radio waves for communication. We know that we have only been using radio waves since the early 20th century...and in another century we may be able to harness other forms of communication undreamed of at this time. To think that all possible galactic civilizations have come up with the same systems in sync with us either through proximity or more probably through a serendipitous alignment of technologies based on light-year distances (probably where only one way communication is possible) is slim to nil. Just my $0.02 anyway