A number of ways of intervening rationally in human affairs are based
on systems thinking: understanding real-world complexity via systems i
deas. This article reviews the development of systems thinking and foc
uses on one of the systems approaches: Soft Systems Methodology (SSM).
It indicates how SSM embodies systems thinking by giving an account o
f the crucial steps in the thinking as SSM developed. Issues in curren
t work are reviewed by setting out a number of experientially derived
generalizations. These concern: SSM as an ideal-type process that the
user suitably adapts on each occasion of use; the fact that SSM's syst
emicity lies primarily in the process of inquiry; the fact that its fo
cus is the interaction between theory and practice; the implicit belie
f behind SSM that learning is axiomatically good; and the belief that
SSM is best used participatively.