RUMSFELD / KNOWNS
Overview
A CNN clip from February 2002 of Donald Rumsfeld explaining the idea of known knowns, known unknowns, and unknown unknowns at a press briefing.
On Hacker News
HN links it as the original footage of the famous framing of knowledge and ignorance.
Topics
Sources
Video by CNN, played through YouTube.
Data and selection notes
HN summaries and labels may contain AI errors. HN dates refer to discussions, not video publication.
HN Library: HackerTube export (2026-10-31) and open-index/hacker-news. Upstream summaries and classifications may contain AI errors.
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Selection checks
- SaaS & AI candidates: Topic keywords do not match
- Editor-approved picks: Editorial review is required
What people said