Reference #144: Peopleware

Certain types of work — such as engineering, design, or writing — require a state of flow to be done productively. Re-entering flow after an interruption costs a re-immersion time of over 15 minutes.

A worker who is frequently interrupted has a greatly reduced effectiveness. And so the cost of their work increases.

Note this differs from the work of a manager, for whom frequent interruptions is part of the role.

DeMarco, Lister. Peopleware, 2013. (62)

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