(Oct 6, 2014 04:39 AM)cluelusshusbund Wrote: Why do you thank it is... that most people thank Aliens are quite likely...
The question whether "aliens" are quite likely depends on what words like 'alien' and 'life' mean, on what their range of reference is. Our problem is that we only have knowledge of life on one planet, so we naturally think of everything in terms of ourselves.
My own view is that if life emerged (through some as-yet unknown process) here on Earth, and assuming that similar physical and chemical processes are possible all over the universe, that functionally analogous self-reproducing biochemical systems probably emerged elsewhere as well. There are billions of galaxies out there, each with billions of stars. And evidence seems to be mounting that planets are common. That's lots of powers of ten.
Having said that, I also think that there's a huge fortuitous aspect to life. The precise nature of the early chemical replicators in each place, and the evolutionary pathways they subsequently follow once they exist, is probably going to have almost infinite chaotic variations.
That suggests (to me anyway) that space-aliens aren't likely to be humanoids like ourselves. Aliens will probably be far more... alien... than we currently imagine.
Which has interesting implications for all the many 'contactee' reports in UFOlogy. The aliens described in these reports are almost always humanoids, often very similar anatomically to ourselves. My guess is that the reason for this is that these aliens are the product of human imagination, conceived in our own image.
Another, far less likely possibility is that beings like the so-called 'Greys' are time-travelers, beings that do have some evolutionary connection with ourselves.
Quote:but dont seem all that concerned about the ufo acounts from eye witnesses... or those captured in pics an videos.???
I'm inclined to think of them in much the same way that I think of visions of the Virgin Mary or the miracles of the Saints. There's a vast body of reported evidence, but it's always anecdotal and intangible somehow.
How do I make my assumption that there are probably 'living' (in a broad sense) beings out there in the universe, probably even beings with very advanced cognitive abilities, consistent with my doubts about UFOs being extraterrestrial spaceships?
I guess that I'll say that being so fortuitous, I don't think that life is all that common out there. You may have to inspect thousands of planets before finding any. (And then, it might just be something analogous to bacteria.)
The existence of something functionally analogous to life doesn't necessarily imply advanced technological civilization either. The vast majority of the Earth's several billion year history elapsed without the presence of human beings. The scientific revolution was only about 350 years ago. So thinking about other planets, not only would we have to find one where something like life has appeared, we might also have to catch that planet at just the right time.
So my guess is that technological civilizations are likely to be widely separated.