Although it’s a game that can trace its origins back over 700 years, most people know Dominoes as a fun chain reaction toy that’s actually only fun when it comes to knocking them down, not the stressful process of stacking them up. With that in mind, Grant Davis built a self-stacking and self-toppling domino machine…
source https://gizmodo.com/brilliant-self-stacking-lego-domino-machine-is-perpetua-1849820984
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