Some subscribers to Phys-L might be interested in a discussion list post "Do 'Alien Species' Exist in the Universe?" [Hake (2014)]. The abstract reads:
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ABSTRACT: Paul Handover in his "Learning from Dog's" <http://learningfromdogs.com/> blog entry "One couldn't make it up: Stop the world, I want to get off" at <http://bit.ly/1dtBJJ9>, introduced George Monbiot's <http://bit.ly/1hyrg0O> (2014) brilliant investigative Guardian piece "Drowning in Money: the untold story of the crazy public spending that makes flooding inevitable: Every year billions are spent in Britain and Europe on policies that wreck homes and lives through flooding" <http://bit.ly/1i6eglA>, with the following:
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I am feeling somewhat forlorn about the way that we humans work things out! As the old saying goes:
Q1. Why has Planet Earth never been visited by an alien species?
A1. Because they have seen no signs of intelligent life!"
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BUT:
Q2. Do "alien species" exist in the Universe?
A2. Probably Not! – see " 'Where is Everybody?' Failure to Detect Intelligence in the Universe is Due to Failure of Universities Throughout the Universe" [Hake (2013)] at <http://bit.ly/H3roIC> (6.8 MB).
REFERENCES [URL shortened by <http://bit.ly/> and accessed on 17 Jan 2014.]
Hake, R.R. "Do 'Alien Species' Exist in the Universe?" online on the OPEN! AERA-L archives at <http://bit.ly/1kHEm0i>. The abstract and link to the complete post are being transmitted to several discussion lists and are also on my blog "Hake'sEdStuff" at <http://bit.ly/1dCUNHr>.