Imprecise language is the bane of group processes. Whether you are Donald Trump, Bill Maher, or the substitute teacher for the kindergarten Sunday school class, your audience deserves a better word choice. Unless you are referring to a recent blow on the head, as in to be knocked stupid, the word “stupid” is always a poor choice. Not only is it inflammatory, it distracts us from the choice we must make whenever we talk about motive. I write novels and none of my characters are stupid. Whenever they make a bad decision or commit a felony, the proper word for what they are doing is either incompetence or malevolence.