[ExI] 30 Solutions to the Fermi Paradox

[Anton Sherwood]

On 2021-3-17 18:55, spike jones via extropy-chat wrote:
> I think you are right however: there is some form of radio 
> communications that we don’t know about yet, which I think
> is highly directional collimated EM.  If we are not in the
> line of sight, we don’t get the signal.

https://www.gregegan.net/INCANDESCENCE/00/Crocodile.html
Most of the galaxy has been thoroughly civilized for millions of years, 
but the Core is a mystery: not only is it quiet, every probe sent to a 
certain depth is bounced out with its memory wiped.

Eventually someone sees ionized fluorine along certain lines,
and guesses that these are created by communication lasers.

-- 
*\\*  Anton Sherwood  *\\*  www.bendwavy.org