Critic Gabriel Josipovici is making a few waves by drawing what some call a "bravura" link between Dürer’s Melancholia and Duchamp’s Bride Stripped Bare By Her Bachelors, Even. But how? For the answers, as yet, one must read his latest book, but the shared presence of so-called "bachelor machines" in both works may have something to do with their apparent kinship . . . and enduring appeal.