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In a casual chat over lunch back in 1950, the Italian-American physicist Enrico Fermi posed a now famous question. If intelligent life has evolved many times in our galaxy and beyond, why do we see no sign of it?

There are a number of standard reposts to this paradox. The first is that life is actually quite rare and humanity is the first species to become advanced enough to contemplate other civilisations.

Another argument is that intelligent species have been common throughout history but end up destroying themselves or their habitat with their own technology, such as with nuclear weapons or fossil fuel burning.

Yet another approach is that advanced civilisations are common and aware of us but keep themselves hidden for fear of disturbing our delicate culture.

Today, Adrian Kent at the Perimeter Institute in Waterloo, Canada, puts forward another possibility. His idea is that civilisations are common, that they have interacted many times in the past but end up competing for scarce resources. When that happens, the process of evolution, operating over vast time scales, ensures that the survivors learn to keep quiet.

To read the rest of the article, click here.

"Hogwash, Adrian is not aware of the overwhelming evidence for UFO alien spacecraft in our skies for thousands of years."
e.g. http://en.wikipedia.org/wiki/National_Institute_for_Discovery_Science

Videos of presentations given to World Business Leaders in Saudi  Arabia...
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Category: Science