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<blockquote data-quote="Ryujin" data-source="post: 6652109" data-attributes="member: 27897">No doubt, but then one would assume that at least some of these postulated &quot;more advanced&quot; races might want to make their presence known. Sending more powerful, or even tight beamed transmissions at some likely source of life. And if life is that plentiful, then the odds of there being someone in our range rise accordingly. There just seems to be so much working against a &quot;plentiful life universe&quot;, from where I sit.A short story and a book that I read, some years back, both come to mind. In the short story the Earth was the subject of an alien invasion, by a multi-species empire. They landed their ships, opened up the doors, and were cut to pieces by Earth weaponry. It seems that the trick of FTL travel was much more simple than we supposed and we had somehow missed it when they had discovered it, roughly about the same time that they discovered the use of muzzle loading gunpowder weapons.The book was sort of the flip side. The aliens found us, somehow, from many hundreds of light years away, and sent a powerful LASER transmission that contained all of their knowledge. The aliens were never met, nor visualized. The knowledge that they sent was the sort that we could use to destroy ourselves over the course of a bad weekend but, apparently, the originating aliens could not conceive of a race that would be as stupid as we are.</blockquote>

[QUOTE="Ryujin, post: 6652109, member: 27897"] No doubt, but then one would assume that at least some of these postulated "more advanced" races might want to make their presence known. Sending more powerful, or even tight beamed transmissions at some likely source of life. And if life is that plentiful, then the odds of there being someone in our range rise accordingly. There just seems to be so much working against a "plentiful life universe", from where I sit. A short story and a book that I read, some years back, both come to mind. In the short story the Earth was the subject of an alien invasion, by a multi-species empire. They landed their ships, opened up the doors, and were cut to pieces by Earth weaponry. It seems that the trick of FTL travel was much more simple than we supposed and we had somehow missed it when they had discovered it, roughly about the same time that they discovered the use of muzzle loading gunpowder weapons. The book was sort of the flip side. The aliens found us, somehow, from many hundreds of light years away, and sent a powerful LASER transmission that contained all of their knowledge. The aliens were never met, nor visualized. The knowledge that they sent was the sort that we could use to destroy ourselves over the course of a bad weekend but, apparently, the originating aliens could not conceive of a race that would be as stupid as we are. [/QUOTE]

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