No one, not even a philosopher, is morally obligated to live as if the world were the way he wishes it were. Robert Nozick pays taxes and is entitled to enjoy the government benefits they finance --even benefits he thinks should not exist. Perhaps the libertarian philosopher should not be expected to opt out of rent control voluntarily. But should he be pursuing his landlord through the maze of rent control regulations like a man possessed? And should he be using his ability to make a nuisance of himself under these regulations for simple, if lawful, cash extortion?They say that policeman make the best burglars. After a few years on the job, they know all the tricks. The same thing seems to be true of philosophers. If you're looking for someone to manipulate a rent control ordinance, find an advocate of the free market.