It’s not polite to stare. Especially in the hospital. But nearly everyone who passes Moxi the robot at Elmhurst Hospital in Elmhurst, Illinois, can’t help but goggle at it, as it slowly rolls through hallways and corridors. The robot is roughly human-shaped, stands about 5 feet tall and, perhaps most strikingly, has big blue eyes, reminiscent of circles on a Lite Brite screen, that occasionally blink. “That’s technology these days,” said David Crisp, of Westchester, Illinois, laughing, as he waited for an appointment with his mother at the hospital on a recent day. He sat there as the robot ro…