By an incredible coincidence, Gamow and Edward Condon, who had discovered simultaneously and independently the explanation of radioactivity (one in Russia, the other in this country), came to spend the the last ten years of their lives within a hundred yards of each other in Boulder.
I have said many times before, interactivity is the equivalent of radioactivity. For interactivity effects a kind of disintegration, a kind of rupture.
I do not believe in the commercial possibility of induced radioactivity.