⁣Yaba Blay, Ph.D. created the (1)ne Drop Project, a multiplatform endeavor that hopes to challenge perceptions of black identity. Blay, a consulting producer for “Who Is Black in America?” spoke to hundreds of those who may not immediately be recognized as “black” based on how they look, including CNN Anchor Soledad O’Brien. In this edited excerpt from her forthcoming book, Blay spoke to O’Brien about what makes a person black, and why the conversation is important.