Affordances and Design
http://www.jnd.org/dn.mss/affordances_and_desi.html

Norman, Donald A.
JND.org
2004

Abstract:

In the world of design, the term 'affordance' has taken on a life far beyond the original meaning. It might help if we return to the original definition. Let me try to clarify the definition of the term and its many uses.