Sometimes it's an accident, sometimes it's repetitive motion. I worked in a shop where people had carpal tunnel from handling parts the same way for years, or

Sometimes it's an accident, sometimes it's repetitive motion. I worked in a shop where people had carpal tunnel from handling parts the same way for years, or bad eyes from welders. It really depends. Of course, some people take more precautions than others, and that helps, but it's no guarantee of safety.