No. 127 · People · Military and War
Power Vacuum
When authority disappears, someone always rushes to fill the gap, often not who you would choose.
In the Almanac
“Somalia after Siad Barre”, 1991–1993 · “Hewlett-Packard”, 2005–2011
Both stories in full, three ways to use it and where it misleads.
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Questions
What is Power Vacuum?
A Power Vacuum occurs when authority collapses or goes unclaimed, leaving no clear structure for decisions. Rivals rush in, and the scramble can do more damage than the old order ever did.
How do you use Power Vacuum?
Use it whenever you remove a leader, rule or routine. Name an interim owner before someone leaves, assign the tasks nobody owns, and replace habits instead of just dropping them. Fill gaps deliberately, or something else will fill them for you.
When does Power Vacuum matter?
Power Vacuum is one of the 60 mental models for people, the situations where you ask: Why do people act as they do, and how do I work with them? Within that, it belongs to “How groups behave”, alongside Bystander Effect, Chilling Effect and Dunbar’s Number.
What is an example of Power Vacuum?
Two stories show it at work: Somalia after Siad Barre (1991–1993) and Hewlett-Packard (2005–2011). Both are told in full in The Mental Models Daily Almanac, which has two stories for each of its 365 models.
Which mental models are related to Power Vacuum?
Hierarchical Organisation, Exit Strategy and Institutional Knowledge. Power Vacuum itself comes from military and war.