Every actor dreams of directing, but most theatregoers are blissfully unaware of exactly what it is that a director brings to a production. “If she’s lucky, theatergoers meeting her will say something vague, such as that they enjoyed the show. If a director is doing her job, her contribution may be undetectable, like the eggs in a cake. The finished product wouldn’t be nearly as delectable if the yolks had been left out, but you’re darned if you can single out their presence.”