From the opinion: > Both [the right to remain silent and the right to an attorney] protect the privilege against compulsory self-incrimination by requiring an

From the opinion: > Both [the right to remain silent and the right to an attorney] protect the privilege against compulsory self-incrimination by requiring an interrogation to cease when either right is invoked. It seems that if he had explicitly stated he did not wish to talk, the interrogation would have ended immediately. Because it was not explicitly stated, the police were allowed to continue asking questions. After several hours of being asked questions, he broke his silence and answered. It appears that explicitly invoking your right to remain silent saves you a lot of stress.