Colons are bad, according to many, especially in book titles. Example: Lincoln: A Life. Well, Im not so sure I am against colons as a matter of principle. One of the first interesting political scientists I ever read as an undergraduate was Wilmoore Kendall. And one of the reasons I started taking him seriously is because (as I recollect) he loved colons. "Now listen to me: Lockes relationship to the American founding is this." (Im paraphrasing) This got my attention. This was much better than the typical dry-as-dust academic writing that we were forced to read for classes. And then he would say things like this: self-government includes "feeling with your hips" and "thinking on your feet." This article considers disfluencies is speech. I want to say, ah, um, you know....Some interesting facts are noted (there are specialists who spend their whole life studying this, ah, stuff!), including how frequently it occurs in English speech (circa every 4.4 seconds) and why it is that social scientists and those in the humanities say, uh, um, etc. more often than those in the sciences.