Awesomely Bad Ideas: Teaching a Robot to Sword Fight

Georgia Tech has given a robot a sword and told it that humans are out to get it, all in the name of safety

2 min read
Awesomely Bad Ideas: Teaching a Robot to Sword Fight

In a paper presented this week at the IEEE International Conference on Robotics and Automation (ICRA), in Shanghai, Georgia Tech researcher Tobias Kunz starts thusly: "In order to deploy safe and flexible robots for service and automation, robots must act safely in close contact with humans." Accompanying this innocuous first sentence is this picture:

human robot sword fight

You're probably wondering, at this point, just what the heck a robot with a sword has to do with safety of all things. And why do people keep giving swords to robots anyway? There was Hubo II dancing with one last year, and just three days ago we saw two industrial manipulators dueling with lightsabers.

As it turns out, Kunz says that one good way to get a robot to be dynamically safe around humans is to just program it to think of humans as adversaries. Huh? You may still be wondering why giving a robot a sword and teaching it to think of humans as bad guys is somehow a good thing, but bear with me.

On a fundamental level, a lot of what sword fighting is about is predicting the intentions of a human and then deciding how to respond. By teaching a robot to defensively (just defensively, mind you) block incoming sword attacks, the idea is to create a general model that robots can use to react quickly and safely around the unpredictable movements of nearby humans.

Plus, come on, it's just awesome. Here's a simulation of the work in progress:

So far, the sword fighting is only taking place in a computer, but as you can see from the pic, Georgia Tech does apparently have a real robot that's capable of wielding a real(ish) sword. Letting this thing loose against a pack of real-life ninjas is clearly the next logical step.

Kunz did the work with colleagues Peter Kingston, Mike Stilman, and Magnus Egerstedt, and their ICRA paper was titled, "Dynamic Chess: Strategic Planning for Robot Motion."

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The Bionic-Hand Arms Race

The prosthetics industry is too focused on high-tech limbs that are complicated, costly, and often impractical

12 min read
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A photograph of a young woman with brown eyes and neck length hair dyed rose gold sits at a white table. In one hand she holds a carbon fiber robotic arm and hand. Her other arm ends near her elbow. Her short sleeve shirt has a pattern on it of illustrated hands.

The author, Britt Young, holding her Ottobock bebionic bionic arm.

Gabriela Hasbun. Makeup: Maria Nguyen for MAC cosmetics; Hair: Joan Laqui for Living Proof
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In Jules Verne’s 1865 novel From the Earth to the Moon, members of the fictitious Baltimore Gun Club, all disabled Civil War veterans, restlessly search for a new enemy to conquer. They had spent the war innovating new, deadlier weaponry. By the war’s end, with “not quite one arm between four persons, and exactly two legs between six,” these self-taught amputee-weaponsmiths decide to repurpose their skills toward a new projectile: a rocket ship.

The story of the Baltimore Gun Club propelling themselves to the moon is about the extraordinary masculine power of the veteran, who doesn’t simply “overcome” his disability; he derives power and ambition from it. Their “crutches, wooden legs, artificial arms, steel hooks, caoutchouc [rubber] jaws, silver craniums [and] platinum noses” don’t play leading roles in their personalities—they are merely tools on their bodies. These piecemeal men are unlikely crusaders of invention with an even more unlikely mission. And yet who better to design the next great leap in technology than men remade by technology themselves?

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