Those that involve the creation of something new
Those that signal a chance to improve
Problem solving usually gets triggered by a perceived "below-normal" performance measure or similar.
Improvement usually means to try to move above the normal performance measure.
There tend to be few differences between methods/techniques for problem solving vs improvement.
"Simple" means the opposite of "complex". It does not mean "easy to solve".
Flood and Jackson (Creative Problem Solving 1991) :-
Simple Problems:-
- Small number of elements
- Few interactions between elements
- Attributes of elements are predetermined
- Interaction between elements is highly organisaed
- Well-defined laws govern behaviour
- No evolution over time
- Single set of goals
- Strong boundary
Complex Problems:-
- Large number of elements
- Many interactions between elements
- Attributes of elements are not predetermined
- Interaction between elements is loosely organised
- Ill-defined laws govern behaviour
- Evolve over time
- Complex set of goals
- Weak Boundary
It is important to consider the context of the problem - the terms goals and boundary help with this.
Flood and Jackson's three types of political/cultural problem contexts:-
- Unitary (common interests, compatible values/beliefs, agreed ends/means, participative decision making, agreed objectives)
- Pluralist (compatibility of interest, some divergence of values/beliefs, compromise on ends/means possible, participative decision making, agreed objectives)
- Coercive (no common interests, conflicting values/beliefs, no compromise on unagreed ends/means, coercive decision making, unagreed objectives)
Ackoff's "messes vs problems" (see also B822)
Messes - dynamic situations that consist of complex systems of changing problems that interact with each other
Problems - extracted from messes by analysis. Atomic parts of messes. Individual problems may be "solved".
Ackoff says that the solutions to individual problems cannot be "added" to form a solution to a mess as those solutions will interact with themselves and the mess.
Rittel "wicked vs tame" (see also B822!)
Tame Problems - can be specified in a form agreed by the relevant parties ahead of the analysis
Wicked Problems - many alternative types and levels of explanation of the phenomena of concern, and the type of explanation determines the nature of the solution
Schon's metaphors (again B822!) - swamp vs high ground
swampy lowland - messy confusing problems defy technical solution where the important problems are
high ground - easier to solve less important problems
Ravetz - practical vs technical problems
Technical - those for which at the start of problem analysis there exists a clear function to be performed
Practical - those for which there is at least a basic general statement of purpose
Juran and Gryna's sporadic vs chronic
Sporadic - sudden adverse change in the status quo
Chronic - an adverse situation that has existed for a long time and remedied by changing the status quo
Ackoff says problems can be solved, resolved or dissolved:-
solved - decision maker selects those values of the controlled variables which maximise the value of the outcome
resolved - decision maker selects those values of the controlled variables that do not maximise the value of the outcome but produce an outcome that is good enough
dissolved - changing the calues so the choices available are no longer meaningful (eg the problem of which car to buy; deciding not to bother and take public transport instead)
No comments:
Post a Comment
Comments are moderated before posting.