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Fixes that fail is a system archetype that in system dynamics is used to describe and analyze a situation, where a fix effective in the short-term creates side effects for the long-term behaviour of the system and may result in the need of even more fixes.〔Senge, Peter M., "The Fifth Discipline" (1990). ISBN 0-385-26095-4.〕 This archetype may be also known as fixes that backfire〔(Fixes that backfire ) Isee systems, 2006. Retrieved 2011-11-01〕 or corrective actions that fail.〔Flood, Robert L., "Rethinking The Fifth Discipline: learning within the unknowable" (1999). ISBN 0-203-02855-4 p. 19〕 It resembles the Shifting the burden archetype. == Description == In a "fixes that fail" scenario the encounter of a problem is faced by a corrective action or fix that seems to solve the issue. However, this action leads to some unforeseen consequences. They form then a feedback loop that either worsens the original problem or creates a related one.〔〔 In system dynamics this is described by a circles of causality (Fig. 1) as a system consisting of two feedback loops. One is the balancing feedback loop B1 of the corrective action, the second is the reinforcing feedback loop R2 of the unintended consequences. These influence the problem with a delay and therefore make it difficult to recognize the source of the new rise of the problem.〔 Representation of the long-term disadvantages of the scenario can be seen on Fig. 2. Although the symptoms go through a decrease when fixes are applied, the overall crisis threshold rises.〔〔Kim, Daniel H., "Fixes that Fail: Why Faster is Slower," ''The Systems Thinker Newsletter,'' Vol. 10, No. 3 (Apr., 1999)〕 A representation with a stock and flow diagram of this archetype is on Fig. 3. The fix influences the amount of problems present in the system proportionally to the fix factor and the problems to be resolved. When activated by the action variable, the fix lowers the problems, thus creating a balancing loop. However, each fix also starts a delayed consequence which adds to the problems proportionally to the consequence factor and the fix applied. Combined, these create a growing amount of problems to be dealt with. 抄文引用元・出典: フリー百科事典『 ウィキペディア（Wikipedia）』 ■ウィキペディアで「Fixes that fail」の詳細全文を読む スポンサード リンク
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