This extra footage follows the main 10-minute video at:    • Bertrand's Paradox (with 3blue1brown)...   (watch this first)
More links & stuff in full description below ↓↓↓

3blue1brown video on the shadow a cube:    • A tale of two problem solvers (Averag...  
3blue1brown:    / @3blue1brown  

Grant Sanderson on The Numberphile Podcast:    • The Hope Diamond (with 3blue1brown) -...  

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