Quote:
Originally Posted by jaYMan
So says who?
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According to this line of thinking, the Earth should already have been colonized, or at least visited. But no convincing evidence of this exists.
Furthermore, no confirmed signs of intelligence elsewhere have yet been spotted in our galaxy or (to the extent it would be detectable) elsewhere in the observable universe.
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I can only imagine the guy that came up with this.
So we went from 1,000,000 years of species, and not a single wheel. Then, out of nowhere, we have the past 50 years, which has seen more tech & dev than the million years before.
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Fermi does and he illustrates that in the Fermi Paradox
http://www.seti.org/seti-institute/p.../fermi-paradox
the drake equation also
http://www.seti.org/drakeequation
and the great filter, The Great Filter, in the context of the Fermi paradox, is whatever prevents "dead matter" from giving rise, in time, to "expanding lasting life". The concept originates in Robin Hanson's argument that the failure to find any extraterrestrial civilizations in the observable universe implies the possibility something is wrong with one or more of the arguments from various scientific disciplines that the appearance of advanced intelligent life is probable; this observation is conceptualized in terms of a "Great Filter" which acts to reduce the great number of sites where intelligent life might arise to the tiny number of intelligent species actually observed (currently just one: human).