The Great Explosion
Eric Frank Russell
 The Blieder drive, a faster-than-light drive system, has permitted the population of Earth to colonize the galaxy. Each planet has become the home for a particular social group. Four hundred years after the diaspora, a spaceship from Earth visits three of the planets, the first steps to unifying the galaxy under a new Empire. Things do not go entirely as hoped, as the incompetent military authoritarians of the ship encounter three very different societies. The first planet was a penal colony; it is now many independent kleptocratic despotisms preying on each other. The second planet, Hygeia, is populated by health and fitness fanatic nudists. The third planet, Kassim, was colonized by a religious group, but when the ship arrives, they can't find any human life, only empty villages overgrown by jungle. They decide not to land on the planet, because the captain fears that the colonists could have been killed by a disease and he doesn't want to endanger the crew. The final planet, K22g, has developed an unusual social system. The population call themselves Gands (after Gandhi) and practise a form of classless, philosophically anarchic libertarianism, based on passive resistance ("Freedom - I won't!" and "Myob!"); and a moneyless gift economy based on barter and favor-exchange, using "obs" (obligations). To perform a service for somebody "lays an ob" on them; they can then "kill the ob" by returning the favor.