Noise | Glossary

Definition
Anything that interrupts the team or disturbs the flow of work within an iteration/sprint is called Noise. It causes significant disturbance within a Team, and causes lack of focus on delivery, ultimately leading to delivery failure.

Origin
Early 13th century,derived from “loud outcry”,from Old French noise “uproar, brawl” and from Latin word nausea, meaning“disgust, annoyance, discomfort,” and in some cases, literally “seasickness”. Used in Software development since late 1980’s.

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Muri | Glossary

Definition
Eliminating waste is one of the top priorities of Lean Software Development methodologies, and Muri is in itself, a key waste. Muri means overburdening people or equipment with more work than they can reasonably manage.

Origin
A Japanese term meaning “unreasonableness,very difficult, by compulsion”.

Further Reading

  • “Leading Lean Software Development: Results Are Not the Point”, by Mary Poppendieck and Tom Poppendieck.
  • Lean-Agile Software Development: Achieving Enterprise Agility”, by Alan Shalloway, Guy Beaver, and James Trott.

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