I’m sharing my 2023 keynote presentation for World Information Architecture Day Des Moines, The Cause of Clarity, in a series of posts. To get closer to understanding what clarity is, I want to talk about what it's not. Language and meaning is complex, and the idea of an “opposite” isn't always useful. But people will ask, and I wonder as well, so I'm thinking about it. So: What is the opposite of clarity?