Each Communication Corneressay is self-contained; however, they build on each other. For best results, before reading this essay and doing the exercise, go to the first essay How an Ugly Duckling Became a Swan,then read each succeeding essay. Today it is generally accepted that to fully achieve in most fields of endeavor you must be a competent (if not a superior) writer and public speaker. Computer science and computer programming are no exception. However, it is a mistake to believe that good expository (non-fiction) writing public speaking are distinct disciplines. They are flipsides of the same coin. Recognizing this essential dualism makes achieving competence in both faster and significantly easier. This essay (slightly modified) originally appeared in the March 2010 edition of Toastmaster, the official monthly magazine of Toastmasters International, which has more than 14,000 clubs for members seeking to grow their public-speaking and leadership skills. © 2025 Owner/Author.