Quote:
Originally Posted by WT Sharpe
And yet we still haven't found so much as even a simple radio message. I believe that the odds are overwhelmingly in favor of other extraterrestrial civilizations having developed in our galaxy, but the fact that we still have not one shred of evidence of their existence is disturbing. It leads to the disquieting speculation that perhaps advanced civilizations don't have a very long shelf life. Maybe the norm is for intelligent lifeforms to destroy themselves soon after achieving the capability to do so. It certainly isn't unreasonable to suppose that we're headed in that direction.
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And yes that's the "concerning" part. If you look at the timeline from the beginning of the universe and allow for the time for intelligent species to develop and play that into the distances and power of radio waves and technology to detect weak signals etc. etc. It may not be too unusual that we have not detected anything.
I guess Stephen Hawking is saying that we need to hide in any case. We shouldn't be trying to contact them.
