Should we start looking into techniques for keeping the mind and body young? One measure would probably be how quickly you can learn new technologies and methods for getting work done. As I get older, I'm always trying to learn something new and coming up with ideas for solving problems. The last thing I want my employer to think is that I'm only good for maintaining the existing code. Another thing is how well you can relate to younger people and work with them. You can't afford to have them thinking of you as being out of touch with the current tech.