The imaginary voyage, from which a hero returns made wise through extraordinary experience, is at least as old as Odysseus. But the major inspiration for this 1750 iteration is Gulliver’s Travels , with which it shares elements of early sci-fi. Wilkins’ new friends are a lens through which to contemplate the customs of his old English ones, as the Lilliputians and Brobdingnagians were for Lemuel Gulliver.