Observed arrival · 2026-11-08
Concepts you can take apart
An interactive explainer collection spanning subjects from voting methods and metric units to quantum mechanics, maps, and infinity.
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- Curious learners exploring big ideas
- Worth noticing
- Its voting-methods section describes an election simulator where the same voters can produce different winners under different counting methods.
Field notes
The homepage is arranged as numbered subject areas, with compact labels for the demonstrations and concepts within each. Examples include a live unit converter, a 51% attack race, a Bell test, and a comparison of world-map projections. It also pairs the voting-methods material with Arrow’s theorem and a simulator, making the site’s emphasis on trying ideas visible in the page structure.
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Editorial observations of this landing page, not a rating.
○OpenPublic substance visible
✦PrettyNotable craft visible
●ProPolished or operationally mature
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