May 2023
Intermediate to advanced
132 pages
13h 52m
English
book
Universal Principles of Design, Updated and Expanded Third Edition
by William Lidwell, Kritina Holden, Jill Butler
Content preview from Universal Principles of Design, Updated and Expanded Third Edition
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021 Bus Factor
The number of team members who, if lost, would put a project in jeopardy.
The name of the principle refers to the expression hit by a bus, which is intended to be a humorous metaphor for a person who becomes suddenly unavailable due to death, extended sick leave, changing jobs, etc.1
The bus factor refers only to team members who are essential to project success and cannot be easily replaced.
A high bus factor (e.g., bus factor = 5) means that multiple team members could be lost without compromising project success. Large bus factors have reduced risks but less agility and higher costs:
- Back-up team members must have the access, availability, project knowledge, skills, and willingness to cover the lost team member.
- More management ...
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