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Want more? Try to solve the buried treasure riddle:

The Infinite Hotel, a thought experiment created by German mathematician David Hilbert, is a hotel with an infinite number of rooms. Easy to comprehend, right? Wrong. What if it's completely booked but one person wants to check in? What about 40? Or an infinitely full bus of people? Jeff Dekofsky solves these heady lodging issues using Hilbert's paradox.

Lesson by Jeff Dekofsky, animation by The Moving Company Animation Studio.

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With Dr Holly Krieger from Murray Edwards College, University of Cambridge. Have a look at Brilliant (and get 20% off) here:

Simpson's Paradox

Thanks to for sponsoring this video! This video is about Simpson's paradox, a statistical paradox and ecological ...

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View full lesson: Imagine you’re on a game show and you can choose between two prizes:...