Quote:
Originally Posted by pmrid
Beg to differ: my point accepts the costraint of the speed of light. At those speeds, potential signs of intelligent activity (deliberate or not) have had 13.7 billion years to reach us - i.e. emanating from anywhere within a radius of 10+ billion lights years of us.
And it is not necessarily a planned and deliberate communication - it may be nothing more sophisticated that the equivalent of a 10 Billion-year-old episode of the Klingon Brady Bunch arriving here to be be enjoyed by us with no commerical breaks. Electromagnetic spectrum pollution of the kind at which we excel.
Peter
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Aah. Hadn't exactly got your point, but I do now.
Although, I still think that if we're going to get a signal from someone much further away than the immediate neighbourhood, the 1/r^2 decay says to me that it would have to be very deliberate and targeted - a random emission would seem to have no chance of lasting long and loud enough. So I still hold onto my scepticism.