Cellular Phone Spectra and Earth's SETI Invisibility

astrobio writes: "How long will the Earth's technology be detectable to other worlds? From an article today by the Chairman of the SETI Institute: 'Not long, with shared transmission spectra. To transmit ever-increasing amounts of information, portions of the spectrum must be shared. This is only possible if signal strengths are reduced so that transmissions on the same frequency do not interfere with one another. The textbook example of this paradigm is the cellular phone system. This signal reduction means we are well on our way to becoming invisible.'"

Comments

Invisible?

[Rhombus]

Perhaps this is why we don't hear any radio transmissions from alien civilizations...by the time we thought to start listening, they've already refined their communications to the point where they're no longer detectable by us.

Sounds like it could be the death knell for SETI...