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The Microsoft Excel World Championship is a reminder that anything can be competitive (and fun) if you’re skilled enough. At the HyperX Esports Arena in Las Vegas last month, 12 finalists faced off by solving puzzles with spreadsheets in an effort to be named the world’s best spreadsheeter.

The next time you look at the screen on your phone or the RGB on your keyboard, thank Shuji Nakamura, the inventor of the blue LED, who made it all possible and should have received way more recognition for it. His breakthrough is still changing the world.

The method by which this incredibly suspicious-looking device turns QR codes into human-readable menus printed on receipt paper would make Rube Goldberg weep. I love it.