Seventeen landfalls from Troy to Ithaca, each with the Greek of the passage set beside it and every word tappable. Tap πολύτροπος at line one and you get the root τρέπω, “to turn” — then the note that whether Odysseus is turned by fortune or does the turning was already being argued in Plato, and that the same root gives us trope and the tropics. A toggle swaps ancient names for modern coastline.