Well obviously if a bunch of girls were stranded on an island, they would quickly build a wonderfully Utopian socialist society which would exist in harmony with nature and all the creatures of the earth. There would be no squabbling or hostility. Everything would be re-cycled and no animals would be harmed. By the time the ship discovered them the crew would be amazed to find a gleaming immaculate city and a perfect society.
We would have done all this before all over the world if it were not for the patriarchy holding us back. But feminism is going to do it very soon, just you wait and see.