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Unknowns Quote by Steven J. Wangsness

“There are things we know we know. . . . We know there are some things we do not know. But there are also unknown unknowns—the ones we don't know we don't know. —Donald Rumsfeld” quote by Steven J. Wangsness
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““There are things we know we know. . . . We know there are some things we do not know. But there are also unknown unknowns—the ones we don't know we don't know. —Donald Rumsfeld””

Steven J. Wangsness

About This Quote

Source Speech: Press briefing, Department of Defense, 2002

We recognize what we know, what we don’t know, and the unknown unknowns that can affect decisions.

In simple terms: We must account for knowns, unknowns, and hidden unknowns.

Key Takeaway

Plan for uncertainty and stay adaptable.

Themes

knowledge uncertainty decision‑making

Mood

analytical thoughtful

Type

philosophical strategic

When to use this quote

  • policy planning
  • military strategy
  • business risk assessment

Key Concepts

risk management strategic thinking cognitive bias

Questions to Reflect On

  • How can you identify hidden risks?
  • What steps reduce uncertainty in your field?
A Different Perspective

Overemphasis on unknown unknowns can paralyze action.

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