Donald Rumsfeld Unknown Unknowns !
Overview
A one-minute clip of Donald Rumsfeld's 'known knowns, unknown unknowns' remarks at a Pentagon briefing.
On Hacker News
HN commenters cite it as the source of the known/unknown unknowns framing, sometimes noting he was unfairly ridiculed for it.
Topics
Sources
Video by Ali, 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.
Views, duration and playback status refresh separately from the published catalog. When an update fails, existing data remains visible.
Selection checks
- SaaS & AI candidates: Topic keywords do not match
- Editor-approved picks: Editorial review is required
What people said