n-Disciplinarity

Back in the day, there was a lot of talk about multidisciplinary research.  As a human factors researcher, I am already used to being interdisciplinary - between the worlds of industrial engineering, psychology, and computer science. Now there is more talk of transdisciplinarity - such as the talk that Dan Stokols will give here at UIUC next month.  It is interesting to ponder this longitudinally -- that a topic that was once between disciplines, then becomes a discipline itself.