As a real estate agent's adage is "location, location, location," a communicator's is "know your audience." Legal, scientific and academic audiences indeed require highly technical and complex language to precisely convey the correct meaning. But politicians do not speak to these specialized communities. They speak to all Americans, and, for the most part, they know this requires simple language. The Carnegie Mellon study found that "most candidates using words and grammar typical of students in grades 6-8, though Donald Trump tends to lag behind the others." Sanders was the only candidate whose speeches were above a 10th-grade level, making him a notable outlier.