"David Martel" <marte005@earthlink.net> wrote in message 
news:3W3Jg.11760$Qf.10971@newsread2.news.pas.earthlink.net...

Eric,

  Always willing to shake things up.
  There seems to have been intelligent life on this planet for a very long 
time. The technology to transmit and receive radio waves is quite new and 
confined so far to one species (I'm aware that some animals do transmit or 
receive electrical signals but the signals are really weak). So is radio a 
good marker of intelligence?

I agree that RF may not be the ultimate marker of intelligence, but it is 
the most efficient in our current toolkit.

Plus, the "water hole" is one of the few things we can assume common with an 
intelligence we know absolutetly nothing about...