He had faithfully written down the events of the voyage in his journal, which became the chief source of information about the expedition. Also, he was, at that time, the only person who gave credit to Magellan for the success of the voyage

an informal structure in a bureaucracy would be something like so-called "office politics". where there's a formal structure set up for the organization, but then an informal subculture as well that has a way of organizing the bureaucracy further. this can be positive because it sets up an added degree of organization, albeit informal, within the bureaucracy.

answer; belief perseverance;

answer; genetics;