You may not believe it, but theater critics actually work. It’s not all plopping into an aisle seat, yawning, and scribbling in the dark. Perhaps we read a biography of Mary Todd Lincoln to understand that Cole Escola did not. Or we stream cast albums of Sunset Boulevard and Gypsy to prepare for their revivals this fall. Sometimes we even schlep 5,000+ steps through an immersive fable about American innovation and greed that fills six floors and 100,000 square feet, chasing 24 characters in a...