One of the things that copyright law allows some courts to do in the nineteenth century is to essentially exert control over what gets put onstage, because in theory, if you say this has no copyright, you’re saying an author can’t realize any value from it, economic value from it, because you can’t monopolize it. In fact, if you say, you don’t have any right to prevent other people from doing it, things that one might want to censor, for example, the display of partially nude women onstage, which is one case I discuss, tends to proliferate rather than to disappear.