Well, that's how I feel about automating the parenting of 4 and 5 year olds. I'm not saying he should let them make as much noise as they wish - although he probably should, some of the time, I'm a quiet-loving person myself. I am saying that he's better off telling them in person. If he's tired of doing so and automates that task away they're learning something from the experience, but not necessarily what he intends.