On 5/16/2018 5:43 PM, Gary Richmond wrote:
So, at very least, the jury is still out on this question.
I certainly agree. Ray K's predictions about AI have usually been unreliable or just wrong. The inverse square law implies that the energy of electromagnetic radiation falls off very rapidly *unless* the transmission is beamed directly at some intended target. The absence of any evidence of alien civilizations could just mean that nobody in our region of the Milky Way noticed, or nobody beamed any info at us, or that nobody on earth was listening if and when somebody did send a message our way. The likelihood that any civilization in another galaxy could have noticed our planet is vanishingly small. If they had detected our planet, they must have detected billions of others that were closer or more interesting to them. And if they had beamed a message our way, it's certain that we never beamed a response to them, and they probably gave up. John
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