This is some of my ideas...
History and Memory encapsulate the representative tension between objectivity(history) and subjectivity(memory).
1) Memory is lest factual than History however its subjective representation allows it to represent truths that cannot be expressed through History.
2) History and Memory can both easily be influenced by biased perspective; they will essential argue an exposition and pose binary oppositions.
3) History cannot always be 100% objective and factual "you cannot can't represent something to its full extent as it happened."
4) Our approach to history and memory allow us to reach a personal outcome wether this is in mourning or in the notion of national security