What does Nozick mean when he says of someone that her belief ‘tracks the truth’? If her belief were false, she wouldn’t believe it, and if her belief were true, she would believe it. How does Nozick formulate the principle he calls ‘Principle P’? If a person knows that p, and knows that p entails q, then he knows that q. How is Nozick able to escape the threat of skepticism? He denies Principle P.