6. motivation for burning is so they will not get caught, keep all information inside head, not doing it to destroy them, doing it to keep themselves safe
7. This passage notes that Granger is aware of the fact that the literature they've stored in their minds will force people to recognize and think about themselves. The mirror factory (knowledge) will provide the self-awareness and wisdom needed to rebuild.
Explanation:
6 is good not sure if number 7 is what you want though
