Book excerpt: Although Rebecca Wright has pieced her life back together after a major tragedy, she can’t shake a sense that the world around her feels off-kilter. Meanwhile, her husband’s dedication to his invention, “the causality violation device” (which he would greatly prefer you not call a time machine) has effectively stalled his career—but he may be closer to success than either of them can possibly imagine. Emotionally powerful and wickedly intelligent, Version Control is a stunningly prescient novel about the effects of science and technology on our lives, our friendships, and our sense of self that will alter the way you see the future—and the present.