Without spoiling anything about The Last of Us Part II, there's an note in an aquarium and the information within it gives important context to the story and contrasts the critical decisions characters have already made. One of The Last of Us Part II’s major themes explores vengeance and how communities get lost in cycles of violence. This small note reflected those themes and called out major characters on their actions. It was an important story beat, tucked away in an easily ignored note.
This is a companion discussion topic for the original entry at https://www.vice.com/en_us/article/akzkwe/i-hate-reading-notes-in-the-last-of-us-part-ii