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Oh, so basically there will still be someone at home to teach the child and all the robot will do is execute for the child? If the child is really sick, there is no need to teach him at home. Just let him rest and recuperate. If hes is sick but can somehow be taught, let him do his part just like that raising his hand. Having a robot do very simple tasks like raise hand on behalf of the child is crippling functionality of human body.