It is simple! Just by existing, you are more than them! Sure, you have memory problems and rely on your notes to know all that you do. But even so, the person ultimately driving your actions is you yourself! You are the one who chooses how to read and write those notes, and how to inerpret them! Without you, what purpose would those notes serve?

Not to mention, the person who I acknowledge as a dear friend is Ryoko Otonashi-kun, not her notes! With that said, and considering your strength of character, I would certainly consider you to be much more than your notes! You are your own person, Ryoko Otonashi!