Mark, I wasn't really pointing at you with my comments, so I hope I didn't sound argumentative. I do see the relationship between the two since they were typically used together to achieve a common goal. I guess I was mainly stressing that retracts don't make a plane louder and they don't make a plane more expensive. They can make a plane more complicated and high-maintenance, however. But, if an individual pilot doesn't mind the pre-flight testing and tinkering, then why should that matter to others?