Author Eoin Colfer does a masterful job presenting a single nonbranching, static timeline, complete with three consistent causal loops (further described in our tag notes for this story). But really, Eoin, you missed the shuttle on “the kiss”! With the help of N°1, Artemis can time travel, so if you're intent on his first romantic kiss coming from Holly Short, couldn’t N°1 have brought Holly’s actual fourteen-year-old self into the story? Might have even presented an opportunity for a fourth causal loop: Fourteen-year-old Holly kissees fourteen-year-old Artemis, but only because fifteen-year-old Artemis had already told thirteen-year-old Holly that they would enjoy it.