Don’t know about you, but I was absolutely riveted by Gillian Flynn’s Gone Girl. Told in the alternating points of view of Amy and Nick, a childless couple married five years this creepy, plot- twisting novel kept my attention till the last page. Then there is The Silent Wife, by A.S.A Harrison. Here, another childless couple, though older, Jodi and Todd, go about their lives in alternating chapters, in mutual misunderstanding, evasion and outright deception. Like Flynn’s novel, murder is committed, and the characters are less than attractive. But their actions are understandable, and the plot-twisting ending is remarkably satisfying. Now I’ve just read a brand-new book with alternating viewpoints. It is Principles of Navigation, by Lynn Sloan. (Fomite, Burlington VT. 2015) Set in 1998-9, the book begins with the protagonist, Alice, desperately trying for a baby with her husband, Rolly. They’ve been trying for three years and Rolly refuses to get medical intervention. Alice appears to believe that the new millennium will give them a child and a new chance at happiness. The novel is told in the alternating viewpoints of Alice and Rolly and shows their disintegrating relationship as the months wear on. Interestingly to this reader the character of the husband, Rolly, is much more appealing. He has flaws and failures as a husband, but he hurts, he changes, and we care about him. The character of the wife, Alice, becomes harder and more alienating as time goes on. Her behavior drives the plot. Or rather, he makes a move, she resists. Like a chess game, each acts according to what pushes them forward, even as each is unaware of their most profound motivations. In life, we propel ourselves forward according to often unconscious instructions. Perhaps the title, Principles of Navigation, refers to this blind drive to reproduce, as locked into our genes as any other creature’s, and we push onward upstream against all obstacles, like the salmon when they spawn.