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check out this retarded, egotistical cunt astrobiologist's study, what a retard!
Another researcher who breaks the bias barrier is the author of Lucky Planet: Why Earth is Exceptional-and What That Means for Life in the Universe, astrobiologist David Waltham, who states, "Because, by definition, we conduct our research from a habitable planet, we cannot generalize our experience assuming that it is universal."
Waltham blames his colleagues' disagreement with him on this point on observational bias. "Our view of what is really there has been misled by the accident of what we're able to see." He uses the example of the night sky to illustrate this point. The vast majority of stars in the galaxy are invisible to our naked eye. Only the very close or giant stars are bright enough to see. But our view of the night sky is misleading, since we don't see the real population of stars, only the visible bright ones. The Earth is our only example of a habitable planet, and due to the principle of mediocrity, we assume it is an average case.
Waltham only hints at the quantifiable rarity of the Earth when he posits that Earth might be one in a trillion, and says he doesn't think there is any evidence to suggest it should be higher odds than that.
This makes Earth, according to him, unique in at least the Milky Way, considering that there are only up to 200 billion planets in the galaxy. This probably means we are effectively alone, as intergalactic travel, and even communication, seems unlikely.
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