His reasoning is sound. I came to the same conclusion in my youth. I rebuilt and built old tube radios. And read old radio hobby magazines from the 1920s. They predicted that very soon we would be receiving proof of intelligent life. A hundred years plus and thousands of experiments in alien detection later: and the positive results are nil. The thousands of experiments to prove the Earth is flat also yielded nil results. Ships sail away, planes fly away and never see an edge to the planet. Those are enough experiments to convince me that the earth has a whole lot of roundishness to it. Another of my non beliefs: The failure of any UFO passenger to communicate with us, leads me to believe that there are no UFO's visiting Earth from other heavenly bodies. Perhaps there has been a thousand sightings, and zero received communications during those multitude of visits. The silence is just too much of a coincidence, it seems to me.