To have to grapple with divergent problems tends to be exhausting, worrying, and wearisome. Hence people try to avoid it and to run away from it. A busy executive who has been dealing with divergent problems all day long will read a detective story or solve a crossword puzzle on his journey home. He has been using his brain all day; why does he go on using it? The answer is that the detective story and the crossword puzzle present convergent problems, and that is the relaxation.
