Impairment and Design
http://www.uiandus.com/2008/08/12/announcements/impairment-and-design/

Lang, Keith
UI and Us
2008

Abstract:

We are all impaired to some amount. I realized this a few years ago as a musician, moving heavy amplifiers to gigs. Those little ramps that had been required by law (at least here in Australia) for wheelchairs were my saving grace.. instead of lifting the hefty equipment I could roll it into the building. It probably saved me more than once from back injury. And yet, there would be no way the institutions would have put in those ramps for my convenience.