Sheree R. Thomas is editor of Dark Matter:A Century of Speculative Fiction From the African Diaspora, "the first anthology to illuminate the presence and influence of black writers in speculative fiction, with 25 stories, three novel excerpts, and five essays. This anthology's critical and historical importance is indisputable. But that's not why it will prove to be the best anthology of 2000 in both the speculative and the literary fiction fields. It's because the stories are great: entertaining, imaginative, insightful, sharply characterized, and beautifully written." In his 1999 essay "Black to the Future," which is reprinted in Sheree Thomas's anthology, mystery and recent science fiction writer Walter Mosley writes, "The power of science fiction is that it can tear down the walls and windows, the artifice and laws by changing the logic, empowering the disenfranchised, or simply by asking, What if?"