Hariri & Hariri exemplifies the spirit of the emerging generation of architects. Gisue Hariri and Mojgan Hariri, Iranian-born, Cornell-educated sisters, opened their New York City practice in 1986. At that time, writes esteemed architectural historian Kenneth Frampton, their work "first broke upon the New York scene, with the publication of a single spiral staircase executed in bent plate steel . . . an archetypal modern image set in a different key."...