“Toward Eternity,” the debut novel by Anton Hur, who has built a worldwide reputation as a star Korean-to-English literary translator, borrows heavily from the ideas of technofuturists. They theorize a point — the singularity — at which superintelligent machines tilt things toward a posthuman sci-fi future, and human-machine hybrids start to replace us. Hur’s story begins at the cusp of that revolution. Those who have heard the technofuturist gospel will readily recognize the premise behind the novel. Ray Kurzweil, computer scientist and the real-world chief prophet of technofuturism, predicted superintelligent machines by 2045 in his 2005 magnum opus, “The Singularity is Near.” “[T]he social and philosophical ramifications of these changes will be profound,” Kurzweil wrote, “and the threats they pose considerable.” With these ideas in mind, “Toward Eternity” grapples with an increasingly timely question: How can human meaning survive in a world of superintelligent machines? The first central character in “Toward Eternity” resembles Hur himself: a cosmopolit