RedPhoenixxxxxx wrote:
Quote:
They have a completely arbitrary guess that is no more or less likely than life only even existing uniquely on Earth.
Hehe, I am tempted to use the gbaji "prove it then!" argument, but I wouldnt snoop so low. I still think that their guess is not "completely arbitrary", since they know quite a lot about other planets, about how life on Earth was formed, about the conditions necessary for life to exist and evolve, etc...
One thing that should be pointed out when talking about this... we may not even be talking about life-forms that can communicate in some verbal way... even something microscopic would count as life... of course, no chance in hell could we find something other then a huge city from earth pretty much. Unless there is some technology I don't know about.
Also, you're right, we don't know exactly the enviroment needed for life... however, we are still discovering new life-forms here in earth in some of the most extreme places you could immagine enviroment wise. Hell, I think at one point we found something that lives like near lava or something... I remember reading something awhile back about something living on the sea bottom, deeper then we've ever seen life before, near like a thermal crack or something. Extreme pressure, heat, no light... wouldn't think life could form there, and yet we found some.
RedPhoenixxxxxx wrote:
But all I can say, since neither you nor I can prove anything, is:
You say tomato...
Pretty good way to sum it up actually. Right now, no one can prove either way whether life exists somewhere else or not. Until we can actually go to planets and see first hand whether there is even a small orgainism we can't prove it one way or another. Of course, if we were visiting other planets in the name of exploration (think like stargate or startrek) I immagine we would be looking for more humanoid style species then organisms. Though either would (at first) be a major boon to science.