 of the entire electromagnetic spectrum that we have been able to identify to the extent that we have. We're only seeing an eye drop of water in the whole thing. The visible spectrum that you can see with your eyes is a very, very small part of the energy that is flowing around you. You can't see the Wi-Fi spectrum in which you're living right now. I mean, I'm flooded with Wi-Fi from several different directions in this office building I'm in.