> Maybe we are awash in signals propagated by other than electromagnetic waves?
That was Thomas Gold’s take on it.
*shrug* Any civilization that discovered a way to use Einstein’s spooky action at a distance would drop RF communications in an instant.
Why settle for poky-slow radio for instant communications?
Why use radio where any munchkin with an antenna can intercept your signal?
Why lose signal strength with the inverse square of the distance?