On Mar 9, 7:43 am, (Doug Miller) wrote:
In article . com, wrote:
There are three obvious explanations:

[for the failure, so far, of the SETI program to find anything]

Either it is rather unusual for a civilization
capable of our technology to get started in the
first place, or most of those that do are shy
about accidentally or deliberately making their
existence known, or they don't last long after
making it to our level of technology.

A fourth one: Most of them, after reaching the level of our current
technology, don't stay at that level very long, but progress beyond it -- for
example, abandoning broadcast communication in favor of optical fiber
transmission would drastically reduce a planet's RF signature.


By that point such a civilization _could_ deliberately broadcast
to its potential if slightly less advanced neighbors at very little
societal cost. We have done so briefly, and may do so again.

So your example fits into the second category of what I call
'shy' civlizations.

A fourth case could be the Prime Directive.

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FF