The story is told that some years ago the publisher of the New York Times was asked why the Times did not print any cartoons alongside its editorials. His explanation was that in a cartoon one couldn't say, "But, on the other hand."It is said that Harry Truman once expressed the wish that he could have a one-armed economist as an adviser. When asked why, Truman explained that he was tired of hearing economists respond, "But, on the other hand."The reader, therefore, will not be surprised when he finds that the remarks that follow, in relation to the . . .