Then OpenAI built a system that mastered Dota 2,23 a game that plays like a more complex version of capture the flag, requiring collaboration between entire teams of autonomous agents. That spring, a team of five autonomous agents beat a team of the world’s best human players. The belief was that success in the virtual arena would eventually lead to automated systems that could master the real world. This was what OpenAI did with its robotic hand, training a virtual re-creation of the hand to solve a virtual Rubik’s Cube before moving this know-how into the real world. If they could build a
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