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The True Love Tinder Robot Reads Your Skin Response to Swipe Left or Right

Looking for love online? Nicole He wants to lend a hand. To that end, He, a grad student at NYU, has designed the True Love Tinder Robot, a computerized system for those searching for The One on the dating app. "In a time when it's very normal for couples to meet online, we trust that algorithms on dating sites can find us suitable partners," He writes. She created the kit as a response to the idea that a computer "knows us better than we know ourselves."

The machine was built using an Arduino board, motors, LEDs, and a text-to-speech module. The system works, He explains, through a process called galvanic skin response, or "basically, how sweaty your palms get" in reaction to the Tinder photos that appear on your screen. The robot interprets that response as either positive or negative and uses a fake hand operated by servo motors to swipe accordingly. Engadget calls the invention a "modern spin on the classic love-tester machine," the penny arcade device that also used skin conductance to judge a couple's attraction.

Check out the video above to see the robot in action, and head to Nicole He's project page to learn more about how she built and coded the love machine.

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26 Facts About LEGO Bricks

Since it first added plastic, interlocking bricks to its lineup, the Danish toy company LEGO (from the words Leg Godt for “play well”) has inspired builders of all ages to bring their most imaginative designs to life. Sets have ranged in size from scenes that can be assembled in a few minutes to 5000-piece behemoths depicting famous landmarks. And tinkerers aren’t limited to the sets they find in stores. One of the largest LEGO creations was a life-sized home in the UK that required 3.2 million tiny bricks to construct.

In this episode of the List Show, John Green lays out 26 playful facts about one of the world’s most beloved toy brands. To hear about the LEGO black market, the vault containing every LEGO set ever released, and more, check out the video above then subscribe to our YouTube channel to stay up-to-date with the latest flossy content.

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Of Buckeyes and Butternuts: 29 States With Weird Nicknames for Their Residents
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Tracing a word’s origin and evolution can yield fascinating historical insights—and the weird nicknames used in some states to describe their residents are no exception. In the Mental Floss video above, host John Green explains the probable etymologies of 29 monikers that describe inhabitants of certain states across the country.

Some of these nicknames, like “Hoosiers” and “Arkies” (which denote residents of Indiana and Arkansas, respectively) may have slightly offensive connotations, while others—including "Buckeyes," "Jayhawks," "Butternuts," and "Tar Heels"—evoke the military histories of Ohio, Kansas, Tennessee, and North Carolina. And a few, like “Muskrats” and “Sourdoughs,” are even inspired by early foods eaten in Delaware and Alaska. ("Goober-grabber" sounds goofier, but it at least refers to peanuts, which are a common crop in Georgia, as well as North Carolina and Arkansas.)

Learn more fascinating facts about states' nicknames for their residents by watching the video above.

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