Source: Will Douglas, TECHNOLOGY REVIEW, 4/8/21

A pair of robot legs called Cassie has been taught to walk using reinforcement learning, the training technique that teaches AIs complex behavior via trial and error. The two-legged robot learned a range of movements from scratch, including walking in a crouch and while carrying an unexpected load. But can it boogie? Expectations for what robots can do run high thanks to viral videos put out by Boston Dynamics, which show its humanoid Atlas robot standing on one leg, jumping over boxes, and dancing. These videos have racked up millions of views and have even been parodied.

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