21st Century Learning and Teaching

Das Paretoprinzip, benannt nach Vilfredo Pareto (1848–1923), auch Pareto-Effekt, 80-zu-20-Regel, besagt, dass 80 % der Ergebnisse mit 20 % des Gesamtaufwandes erreicht werden. Die verbleibenden 20 % der Ergebnisse benötigen mit 80 % die meiste Arbeit.

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In computer science and engineering control theory, such as for electromechanical energy converters, the Pareto principle can be applied to optimization efforts.[11]

For example, Microsoft noted that by fixing the top 20% of the most-reported bugs, 80% of the related errors and crashes in a given system would be eliminated.[12]

In load testing, it is common practice to estimate that 80% of the traffic occurs during 20% of the time.[citation needed]

In software engineering, Lowell Arthur expressed a corollary principle: "20 percent of the code has 80 percent of the errors. Find them, fix them!"[13]

Software frameworks have often been observed to make 80% of use cases easier to implement and 20% of use cases much more difficult to implement.[14]

In the mobile game industry, it has been noted that for free-to-play games, over 50% of the game's profit comes from 0.5% of the players.[15][16]

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