THIS NOTE MAY SEEM, ODDLY, TO DISCUSS A DISTINCTION JUDGED not worth discussing. I am responding, however, to the invitation to take part in a symposium on the topic. The symposium-prompting materials suggest a defect found in much of the literature. It is useful to classify types of error—and, I’ll add, unsatisfactory styles of argument—so that each may be readily recognized when encountered. I wonder, though, whether the error under discussion here is best described as confusion between the meanings of two words.