A system is here defined to be
an assembly of components, connected together in an organised way, where
the components are affected by being in the system and the behaviour of the system is changed if they leave it
the organised assembly of components does something, and
the assembly has been identifed as being of particular interest1.
Here we focus on the first two of these. The second two are developed further in our sister course Systems Thinking and Complexity.
Thus a system is composed of a set of at least two elements and at least one relation that holds between them. Each of a system’s elements is connected to every other element, directly or indirectly. As the poster above illustrates2, cities are systems with many elements, many relationships, and many subsystems.
Russell Ackoff, an important early systems thinker, gave great insights into social and economic systems of systems.2 Ackoff argued that many management interventions failed because they attempted to improve the whole by improving the parts in isolation.
1 Jeffrey Johnson, Joyce Fortune and Jane Bromley, Systems, Networks, and Policy, in Non-Equilirbrium Social Science, Johnson et al (eds), Springer, 2017, DOI 10.1007/978-3-319-42424-8_8
2 A City in the Making. Poster available from the Open University. The Open University, 2017.
3 Russel L. Ackoff, ‘Towards a system of system concepts’, Management Science, Vol 17, No. 11, July 1971.
Meadow, D. H., 2008, Thinking in systems, Chelsea Green Publishing (Vermont).