What is it with all this "belief".
There is or there isn't. There could be, but we don't know.
The chances of life developing could be far lower, or far greater than the number of planets in existence. We currently have absolutely have no idea of the odds of abiogenesis, so whatever that forumla is called for the odds is pretty pointless.
The need choose to be certain one side or another regarding aliens existence is unwarranted, unless you actually think you saw one I suppose.
|