This article focuses on the use of these "dark patterns" to mislead people, but the basic idea is used positively in many, many contexts. Quality engineers use

This article focuses on the use of these "dark patterns" to mislead people, but the basic idea is used positively in many, many contexts. Quality engineers use the concept of a "poka-yoke" (http://en.wikipedia.org/wiki/Poka-yoke http://en.wikipedia.org/wiki/Poka-yoke) to failsafe their processes and systems all the time.