The Venetian lagoon was one of Europe's major migratory bird routes. Gondola business was much worse in winter than in summer; after all, not everyone could accept spending dozens of euros to sit in a little boat and be blasted by the wind. Couples were different—they could hold each other for warmth.
Single people only wished those showy couples would break up soon. If they were on the same boat, shivering with cold while the couple huddled together for warmth, the single person would dearly love to shove them overboard and demonstrate firsthand that question no man in the world knew how to answer: if his wife and mother fell into the water at the same time, whom would he save?
How nice it would be to have a brother then—one person could save each of them, and he would lose neither his wife nor his mother. The question was, could a brother be trusted?
Birds also had a tendency to live in groups. They lacked human intelligence and could not make fires to keep warm. Penguins gathered together to survive the winter, while migratory birds flew somewhere warmer. The lagoon was very lively in winter.
But when natural enemies appeared, they only fled. They did not organize themselves to resist. Those of their kind that were eaten simply became part of the food chain. Only when their own chicks were attacked would parent birds launch an assault.
Humans and animals were sometimes very alike, especially in their group behavior. Jung called this the "collective unconscious," also known as the soul of the world or the memory of the universe. It was not the part that had been forgotten, but what people had never been aware of. Jung once used an island as an analogy: the small islands above the