“He carries out an experiment which serves to generate both a new understanding of the phenomenon and a change in the situation. (Schön 1983: 68)
We test out our ‘theories’ or, as John Dewey might have put it, ‘leading ideas’ and this allows to develop further responses and moves.
Significantly, to do this we do not closely follow established ideas and techniques – textbook schemes.
We have to think things through, for every case is unique. However, we can draw on what has gone before.”
http://www.infed.org/thinkers/et-schon.htm