When the World Health Organization launched a worldwide campaign to eradicate smallpox, it was engaged in diffusion. When Apple launched iPod, it was diffusing a new product. When Bob Dylan wrote “The Times They Are A-Changin’,” he was describing diffusion (Dearing & Meyer, 2006). When professional dancers-both standing up and sitting down (in wheelchairs)—perform on stage, as do the artistes of the Dancing Wheels dance company in Cleveland, they are diffusing a new image of what constitutes (dis)ability.1