It's going to be interesting during the next ten years if NASA and ESA get their earth detectors launched. Who knows what might be found. There are some good ideas being converted to hardware, so if there is something out there it seems there is a good chance it will be spotted. We're counting chickens before they hatch at this time.
I figure that they'll go off instantly while pointing back down here. "Yup we detected earth. It's right over there"
I have the same problem with the stud detector that my wife bought me for Christmas. Everytime I pick it up it goes off
God Save America (Please)