Plain Language in IT, and yes even in Entrepreneurship are important. In IT the main focus is often documenting what happened or describing a process. There will be plenty of technical terms to complicate the writing, and no need for persuasion. You want to be as clear as possible in your writing, removing all emotion (no matter how much you hate that OS) to state the facts for what they are. Or describe a clear process for one to follow. With Entrepreneurship being genuine is what builds business relationships. Using facts to state what your product is about, or can do will go farther with an honest pitch than someone tweaking the data for a great presentation. Persuasion has a way of winning people over, but clear understanding of information is going to prevail more often than not.