Re: Misleading headline
Yes in the tiny subset of star/frequency combinations they looked at, they found nothing they could interpret as an artificial signal.
Our own galaxy is believed to have at least a billion stars, never mind the bilions of other galaxies. Maybe there's nothing out there, but they've barely scratched the surface.
Signals could be too weak to detect, could be disguised to appear natural (why advertise?), maybe not using radio. Some species must be the first to achieve radio comms - statistically it's as likely to be us as it is any other species that might exist.
Galactically speaking searching for 3 years, even 35 years (SETI) is a blink of an eye. It's a very, very narrow observation window - we could so easily miss the few decades of high-powered broadcasts before emitters become more directed and efficient.
Biting the hand that feeds IT
