How not to be ignorant about the world | Hans and Ola Rosling
Overview
Hans Rosling and his son Ola run an audience quiz with global population, health and income data to show how wrong most people are about the world. Ola then gives four ways to get less ignorant.
On Hacker News
Recommended as evidence that the world is improving despite negative news, and for how people misjudge global trends.
Topics
Sources
Video by TED, played through YouTube.
Data and selection notes
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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
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