 The availability of so many traffic metaphors suggests something appropriate about this analogy. Another option identified by Keith Lloyd (2014) lies in perceptual metaphors, especially regarding what arguers can see. However, visual metaphors have a fraught history in feminist philosophy because ideal vision tends to be associated with abstraction, and to lean on a hierarchy of the senses (Keller &amp; Grontkowski 1983). In any case it is likely that no metaphor or analogy can capture all the shapes that arguments take and the purposes they serve (Cohen 1995: 187).