Many years ago, a hippopotamus decided to learn typing. As you may imagine, the task was difficult and discouraging. The hippopotamus however was unusually persistent. First she learned the parts of the typewriter, then she studied all available typing manuals, (even one for an antique which had neither name nor function in any western language; It could best be likened to a linotype machine which set type for haiku poetry in Japanese.) and finally she enrolled in a good secretarial school. In spite of her diligence, there were some practical difficulties; in fact so many that the best of her…