Jacques Derrida and the philosophical movement known as deconstruction were once the rage on college campuses. Those days have passed, but deconstruction's influence is everywhere. We talk with Gayatri Chakravorty Spivak, who first translated Derrida's landmark book "Of Grammatology" into English 40 years ago. Today, Spivak herself is an academic superstar - a pioneering feminist Marxist scholar and one of the founders of post-colonial studies. In this wide-ranging interview, Spivak tells Steve Paulson about her friendship with Derrida and the tragic family story behind her seminal essay "Can the Subaltern Speak." We also hear from intellectual historian Greg Jones-Katz, who's writing a history of deconstruction in America.