I have tried, here, to expose a rough theory (if that is not too dignified a handle for my ideas) of the dynamics of the propagation of ideas which does requires activity, not on the part of ideas themselves, but, rather, on the part of the people who entertain the ideas. I should very much like it if Skoyles could reciprocate by taking me step by step through his own rival theory. Then I should have a better chance to understand what he is talking about and to see whether there are any reasons why I should thinkhe is right rather than myself. Of course, anyone else can join in, too. It's an open society.