"In War Times" is a great novel of ideas and action, showing why contemporary science fiction may be the most important literary genre of our time, grappling with greater clarity of thought and literary skill, the very nature of human existence, than what one usually discerns from so-called literary mainstream fiction. Katherine Ann Goonan's elegantly sparse prose captures vividly the vicissitudes of love, war, peace, and indeed, of reality itself. She weaves concepts as arcane and as dissimilar as the structure of DNA, the nature of time, and the atomic bomb, into one long elegant literary tribute to jazz, with each new unexpected development, as the tale progresses, emerging like some unexpected jazz riff played with ample conviction by the likes of Thelonious Monk, Dizzy Gillespie and Charlie Parker. Jazz is the perfect metaphor to describe what the reader observes in this brilliantly conceived, vividly imagined novel; the merging and splitting of alternate realities, of different future histories, as witnessed by compelling characters such as Sam Dance, Bette Elegante, Wink and others, especially enigmatic physicist Dr. Eliani Hadntz, who presents Sam Dance with the plans of a mysterious device destined to alter all of their futures. Goonan explores how time - past, present and future - can be altered by the least likely of events, sending her characters into different alternate realities that differ by the slightest changing of a few details, relatively trivial in nature, with important implications for the respective futures of these realities. Hers is a novel whose historical settings range from Pearl Harbor to the American crossing of the Rhine near the close of World War II, the Kennedy assassination and the anti-war protests as the United States enters the Vietnam War; it is indeed a novel of grand ambitions which Goonan displays via her ample heartfelt conviction and exceptional literary craft. "In War Times" is certainly one of the most notable contemporary science fiction novels of the 21st Century, and one that should be required reading by mainstream literary audiences.