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Can we move away from video games ? I know games provide a closed loop for these kind of experiments/contests, but I want to see more practical application of RL. How about code generation that create programs based on the test cases or RL agent that can use a 3d design software.

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The problem is that reinforcement learning is far from solved and doesn't work all that well yet, so these toy problems are probably what researchers will stick with for some time to come.

Video games are a great environment because they are quite complex and they are already coded and we understand them. For basic research it doesn't matter whether is it a game, test cases or 3d design. They use games because it is less work as they already work and are easy to integrante. Moreover each game is a different domain.

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