Video story| Twenty-two years ago, Silicon Valley executive Henry Evans had a massive stroke that left him mute and paralyzed from the neck down. But that didn’t prevent him from becoming a leading advocate of adaptive robotic tech to help disabled people – or from writing country songs, one letter at a time. Correspondent John Blackstone talks with Evans about his upbeat attitude and unlikely pursuits.
https://www.cbsnews.com/video/a-robotics-activists-remarkable-crusade/