ABSTRACT
As I look upon many researches in paranormal psychology and ESP, I am reminded of the state of affairs in physics some seventy years ago when scientists had first learned about the phenomenon of radioactivity. People might have gone around with Geiger counters or similar devices. They would have found them clicking here and there and everywhere—but just a little bit. On this evidence physicists surely could have tried to convince their colleagues that this was a real effect, that there was indeed something important in the idea of radioactivity—the emission of charged particles which was not understood by anyone at the time.
