The correct answer to this open question is the following.
If I were a historian studying a journal written by a citizen living in East Berlin when the Berlin Wall was being constructed. My process of interpreting the information would be the following.
First and foremost, I have to make sure this is a valid and original document written by a citizen who lived in that time of the Berlin Wall, during the Cold War years.
Then, I would have to check other important valid sources as is the case of newspapers of that time, magazines, or even radio programs. Once checked, I would proceed to divide the most important arguments of events in the journal. I dive these into facts, mere opinions, quotes, or anecdotes. Then I would have a more complete scenario to try to understand what was real in the journal and what were opinions or judgments.
