This Ball Machine Fakes Perpetual Motion As Long As the Sun Is Shining

Why is watching a marble snake its way around a twisty maze so mesmerizing? Maybe it's an allegory on the human condition as we all try to make our way through the world? What's for certain is that they make for great desk toys, and as long as your office gets a bit of sun during the day, this one could—at least in theory—keep running until our local star eventually burns out.

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