As an approach to problem situations, systems thinking can be extremely powerful. Put simplistically, it considers situations in terms of inputs, transformations and outputs – so you could consider a company as being a system that transforms raw materials into profit through a process of manufacturing and selling.
The power of the technique is part of the problem – it’s often difficult to get a handle on a starting point, and the inherent messiness of the kind of situations that the technique lends itself to complicates things even further.
Soft systems methodology is one of the most commonly used techniques, and has been around since the mid-70s when it was first development by Peter Checkland at Lancaster University. It’s used a lot in the UK public sector, not least because it works well in the type of unstructured situations that are common in this area.
If you’re interested in getting to grips with the process, then unfortunately “difficult” doesn’t even begin to describe Checkland’s writing – while the methodology is sound, his explanations often come across as more philosophical than practical. Other books on the subject also take a highly-academic approach, which while interesting if you’re after that sort of thing, isn’t the rapid “get me up and running” approach that’s needed in most business situations.
Although it’s a good 15 years old, David Patching’s Practical Soft Systems Analysis is still one of the best introductions to the technique. It’s resolutely practical, focussing on the ‘how’ as much as the ‘why’, and resists the temptation to wander off on some of the more meditative cul-de-sacs that Peter Checkland visits. There’s a good practically-oriented treatment of the background to the soft systems methodology, detailed coverage of the process itself, and several examples of practical applications.
Overall, it’s written in a fairly accessible and down-to-earth style. It’s probably not a manual as such – I’m not convinced this is the only book you’ll need in order to become a practitioner of the technique – but it’s a good introduction to the methodology that’s a great deal more readable than the Checkland titles. Unfortunately it’s rather expensive as a new title, but Amazon generally have a number of second-hand titles for rather more affordable prices.