This blog is currently addressing business processes, human workflows, etc. However, at the very bottom of this page appears my bibliography [partial] with prior articles on topics like cost benefit analysis, six sigma, service level agreements, etc
To reconcile these two, sometimes opposed approaches to system design, I recommend the following talk (in a one-hour video) by John Seddon, an occupational psychologist. Just click on the image below to watch his January 03, 2010 presentation.
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In the course of his talk, Seddon refers to the 2008 Wiley book
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Customer service, often a human task, they assert, is only needed when an organization does something wrong -- eliminating the need for service is the best way to satisfy customers. To be successful, organizations need to treat service as a data point of dysfunction and figure what they need to do to eliminate the demand.
You decide!