Shakespeare’s As You Like It is a play without a theme. Instead, it repeatedly poses one question in a variety of forms: What if the world were other than it is? As You Like It is a set of experiments in which its characters conditionally change an aspect of their world and see what comes of it: what if I were not a girl but a man? What if I were not a duke, but someone like Robin Hood? What if I were a deer? “What would you say to me now an [that is, “if”] I were your very, very Rosalind?” (4.1.64-65). “Much virtue in ‘if’,” as one of its characters declares near the play’s end; ‘if’ is virtual. It releases force even if the force is not that of what is the case. Change one thing in the world, the play asks, and how else does everything ch...