La Repubblica recently was examining the topic of placing webcams in pre-school classrooms so that parents can check in on their kids. One Antonello Soro, president of a data privacy group, is against these, because they violate the privacy of the children and the liberty of the teachers. Look, I don't know if these cameras are good ideas or not. But what sort of "privacy" do four-year-olds have a right to expect in a pre-K classroom? The webcams aren't being put in the toilet, after all. More disturbingly, what do the teachers want the liberty to be doing that they can't do if there is a webcam around? Consider this: when I coached youth swimming my practices were always open for parents to watch. Had I somehow lost some of my liberty because of this? Sure, parents might sometimes try to interfere with my coaching methods. I would just tell them, "If you want me as your coach, you have to let me coach my way. If you want a different coach, you are free to l...