In The 100, a memory device called the Flame contains the memories of all the leaders of Wanheda and is implanted in each new leader's head. This device wasn't meant for this purpose. It was designed by Rebecca Franko over a hundred years ago to store an advanced AI system she created.
The Flame eventually is implanted in the mind of Madi, a young girl. Eventually, the memories of Wanheda's worst and most brutal ruler, Sheidheda, begin to take over Madi's mind and she begins to commit terrible acts to incite a war. The Flame can't be removed without compromising Madi's mind, or so they think.
Raven Reyes has Rebecca Franko's research notebook that contains notes from all her research, including the Flame. Raven decides to study the notebook so she can crack the code and erase the memories of Sheidheda from the device.
Rebecca's notes are comprehensive and Raven is successful in wiping the code from the Flame, saving Madi's life.
Had Rebecca not kept such helpful notes about the device and its code, Raven would not have been able to hack it and Madi would have been taken over by Sheidheda or killed by those who wanted to stop him.
Keeping good notes ensures that you and anyone else using your data will understand what they're looking at. Research notebooks are one way to accomplish this. As Penn researchers, you have access to an electronic notebook service called LabArchives. Creating ReadMe files, data dictionaries, codebooks, or metadata are other ways to specifically describe your data.
Read more about taking good notes on the Documentation page of the Data Management Best Practices guide.