Systems Thinking Article Index for
Systems
Website Links For
Systems
 

Information About

Systems Thinking




Systems thinkers consider that:
  • a "system" is a dynamic and complex whole, interacting as a structured functional unit

  • Information flows between the different elements that compose the system

  • a system is a community situated within an environment

  • information flows from and to the surrounding environment via semi-permeable membranes or boundaries

  • systems are often composed of entities seeking equilibrium, but can exhibit oscillating, chaotic, or Exponential Growth / Decay behavior

  • :For further details see Complex System



WHY USE SYSTEMS THINKING TECHNIQUES?

Systems thinkers are particularly interested in studying systems because changing a system frequently leads to counterintuitive system responses. For example Feedback Loop s may operate to either keep the organization in check or unbalance it.

Traditional decision making tends to involve linear cause and effect relationships. By taking a systems approach, we can see the whole complex of bidirectional interrelationships. Instead of analysing a problem in terms of an input and an output, for example, we look at the whole system of inputs, processes, outputs, feedback, and controls. This larger picture will typically provide more useful results than traditional methods.

System thinking also helps us integrate the temporal dimension of any decision. Instead of looking at discrete "snapshots" at points in time, a systems methodology will allow us to see change as a continuous process.

Systems Thinking is a Worldview based on the perspective of the systems sciences, which seeks to understand interconnectedness, complexity and wholeness of components of systems in specific relationship to each other. Systems thinking is not only Constructivist , rather systems thinking embraces the values of Reductionist Science by understanding the parts, and the constructivist perspectives which seek to understand wholes, and more so, the understanding of the complex relationships that enable 'parts' to become 'wholes' as noted in the example below.


WHAT IS A SYSTEM?

A system is any set (group) of interdependent or Temporally interacting ''parts''. '''Parts''' are generally systems themselves and are composed of other parts, just as systems are generally parts or ''components'' of other systems.

Systems thinking techniques may be used to study any kind of system -- natural, Scientific , Human , or conceptual.


Examples


Systems thinking often involves considering a "system" in different ways:
:Rather than trying to improve the braking system on a car by looking in great detail at the composition of the brake pads (reductionist), the ''boundary'' of the braking system may be extended to include not only the components of the car, but the driver, the road and the Weather , and considering the interactions between them.

:Looking at something as a series of conceptual systems according to multiple viewpoints. A supermarket could be considered as a "profit making system" from the perspective of management, an " Employment system" from the perspective of the staff, and a "shopping system" -- or perhaps an "entertainment system" -- from the perspective of the customers. As a result of such thinking, new insights may be gained into how the supermarket works, why it has problems, or how changes made to one such system may impact on the others.


METHODOLOGIES


Systems thinking uses a variety of techniques that may be divided into:
  • Hard Systems - involving Simulation s, often using Computer s and the techniques of Operations Research . Useful for problems that can justifiably be quantified. However it cannot easily take into account unquantifiable variables (opinions, culture, politics, etc), and may treat people as being passive, rather than having complex motivations.

  • Soft Systems - Used to tackle systems that cannot easily be quantified, especially those involving people interacting with each other or with "systems". Useful for understanding motivations, viewpoints, and interactions but, naturally, it doesn't give quantified answers. Soft systems is a field that the academic Peter Checkland has done much to develop. Morphological Analysis is a complementary method for structuring and analysing non-quantifiable problem complexes.

  • Evolutionary systems - the development of Evolutionary Systems Design by Bela H. Banathy integrates Critical Systems Inquiry and soft systems methodologies to create a meta-methodology applicable to the design of complex social systems. These systems, similar to Dynamic Systems are understood as open, complex systems, but further accounts for their potential capacity to evolve over time. Banathy uniquely integrated the multidisciplinary perspectives of systems research (including Chaos , Complexity , Cybernetics ), Cultural Anthropology , Evolutionary Theory , and others.



APPLICATIONS


Systems thinking is increasingly being used to tackle a wide variety of subjects in fields such as Management , Computing , Engineering and the Environment .


SEE ALSO



BIBLIOGRAPHY

  • Russell L. Ackoff (1999) ''Ackoff's Best'' NY: Wiley

  • Bela H. Banathy (1996) ''Designing Social Systems in a Changing World'' NY: Plenum

  • Bela H. Banathy (2000) ''The Guided Evolution of Society'' NY: Plenum/Kluwer Academic

  • John Gall ( 1978 ) '' Systemantics '' Pocket Books

  • Peter M. Senge (1990) ''The Fifth Discipline - The Art & Practice of The Learning Organization'' (Currency Doubleday).

  • Gerald M. Weinberg ( 1975 ) ''An Introduction to General Systems Thinking'' (1975 ed., Wiley-Interscience) ( 2001 ed. Dorset House).

  • Joseph O'Connor , Ian McDermott ( 1997 ) ''The Art of Systems Thinking: Revolutionary Techniques to Transform Your Business and Your Life'' HarperCollins.

  • Bradford Keeney (1983) ''Aesthetics of Change'' Guilford Press

  • Peter_Checkland (1981) Systems Thinking, Systems Practice. (Wiley)

  • Peter_Checkland Jim Scholes (1990) Soft Systems Methodology in Action. (Wiley) ISBN 0-471-92768-6

  • Charles L. Hutchins (1996) ''Systemic Thinking: Solving Complex Problems'' CO:PDS ISBN 1-888017-51-1

  • Tom Ritchey (2002) [http://www.swemorph.com/pdf/gma.pdf General Morphological Analysis: A General Method for Non-Quantified Modelling]



EXTERNAL LINKS