A Skeleton Account of SSM

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Presentation transcript:

A Skeleton Account of SSM The Use of Systems Ideas Systems ideas concern interaction between parts which make up a whole; also, the complexity of real situations is always to a large extent due to the many interactions between different elements in human situations. So it is not surprising that systems ideas have some relevance to dealing with real world complexity. The core systems idea or concept is that of an adaptive whole (a “system”) which can survive through time by adapting to changes in its environment. The concept is illustrated in figure 1.1.

Figure 1.1 The Core Concept: an Adaptive Whole

A Skeleton Account of SSM The Use of Systems Ideas A system S shocks from the changing environment E. if it is to survive it requires communication processes (to know what is going on) and control processes (possible adaptive responses to the shocks). Also the system may contain sub-systems SS, or may itself be seen by a different observer as only a sub-system of some wider system. The idea of a layered structure is thus fundamental in system thinking.

A Skeleton Account of SSM The Use of Systems Ideas Finally what is said to be a system must have some properties as a single whole, so called emergent properties. Thus the parts of a bicycle when assembled correctly, and only then, produce a whole which has the emergent properties of being a vehicle, the concept “vehicle” being meaningful only in relation to the whole. These four italicized phrases represent the core of system thinking. So how can it be used here?

A Skeleton Account of SSM The Use of Systems Ideas The relevance of this kind of thinking to SSM emerged when it was realised that every single real world problematical situation, - Whether in a small firm making wheelbarrows, - a multi national oil company, - or in the NHS (which employs more than a million people) has one characteristic in common. All such situations contain people trying to act purposefully, not simply acting by instinct or splashing about at random. From this observation comes the key idea of treating purposeful action as a system.

A Skeleton Account of SSM The Use of Systems Ideas A way of representing purposeful action as a system ie an adaptive whole was invented (in line with figure 1.1). Figure 1.1 shows the general form. A logical linked set of activities constitute a whole – its emergent property being its purposefulness. The activities concerned with achieving the purpose (the operations) are monitored against defined measures of performance so that adaptive control action (to make changes) can be taken if necessary.

Further reading of rich pictures Checkland, P., and Scholes, J. (2001) Soft Systems Methodology in Action, John Wiley and Sons, Chichester, UK. (p 18-25)