 It might seem that what is needed is a phenomenal contrast case that plausibly controls for both verbal and perceptual phenomenology, as well other kinds of sensory phenomenology. Mendelovici (2010: 107) argues that thoughts about chiliagons (one-thousand sided figures) and megagons (one-million sided figures) might involve the same mental imagery (both shapes effectively look like circles) and so might provide the basis for such cases. Imagine a person who mistakenly uses the word “megagon” to mean chilliagon. Compare her experience of viewing a chilliagon and thinking that it is a chilliagon with your experience of viewing a megagon and thinking that it is a megagon. Since you both use the word “megagon” to describe the shape you are thinking about, and since the two shapes are perceptually similar, you will likely have the same perceptual and verbal imagery. If there is a phenomenal difference between the two cases, it is plausibly attributed to a difference in thought content.