Such teaching takes a lot of repetition. rather than do all the dancing or table-setting himself, though, Jenkins has figured out a way to crowdsource the work. Prescreened users will log on to his Brown lab's website and, through simple keystrokes, guide a robot—such as the PR2, a humanoid robot made by the Silicon Valley company Willow Garage—through a job. Instead of observing the person, the robot will learn by observing itself, recording its every movement and action, and using learning algorithms to find the most efficient way to complete a task. eventually, after someone demonstrates to the PR2 how to successfully pick up and set down a wineglass, the robot should be able to master it.