The behaviour and way of thinking wich always lead to death when noticed are not officialy forbidden and the resulting actions to repress and prevent them from happening are not a response to past crimes, but a measure to actually put in a safety place people who might at some time commit such crimes. Being a Party member is more than having the right opinion, it is having the right intuition. A lot of beliefs and attitudes requested from him are not fully defined and could not be because it would show and reveal the inconsistencies of Ingsoc. If he is a person naturally orthodox, he will at any time and in any situation know, without even thinking, what is the true ideal believed or the desirate emotion. But in any case, a complex mental training, realised in childhood and focusing around the Newspeak words CRIMESTOP, BLACKWHITE, and DOUBLETHINK, will leads him to become demotivated and to lost his ability to think to deeply on a subject of any kind.