On 5/10/2021 10:41 AM, Lawrence Crowell wrote:
Most interested in space and astronomy are familiar with Enrico Fermi’s question “Where are they?” concerning intelligent life. This so-called Fermi paradox poses the Copernican Principle, that any region of the universe is not unique and so life must be universal, conflicts with the lack of any evidence of intelligent life. So far, the SETI program has found radio noise and silence after several decades of looking. Of course, so far only a small segment of this galaxy has been searched, so the prospect is maybe still open. Yet, Fermi’s paradox remains, because if any form of intelligent life were to persist it suggests they, or maybe their robotic emissaries or successors, would move through the galaxy within a period of a million years or so. So far astronomical evidence reveals no instance of some intelligent life modifying a stellar system in any large manner. So, where are they?
I don't find that argument even plausible. Sure life must exist on other planets. But other planets are far away and I see no reason to think high techonology life exists within several hundred light years. And if this intelligent life exists I see no reason they would "send emissaries through the galaxy" either personally or robotically when no information would come back to them for several generations. All this would assume that they were not only high-tech but had developed long-lived intelligent and adventurous entities. This is a lot more suppositions that just "life is common".
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