From How to Live Safely in a Science Fictional Universe by Charles Yu:
And so I am reading this book and somehow in act of reading it, I am, with the help of TOAD [Textual Object Analysis Device] and TAMMY [the user-interface personality of the onboard computer of the character’s TM-31 Recreational Time Travel Device], creating a copy of it, in a very real sense I’m generating a new version, actually, that is being simultaneously written into and store in TAMMY’s memory banks. In doing this, I am making the book my own, in retyping a book that already exists in the future, producing the very book I will eventually write. I am transcribing a book that I have, in a sense, not yet written, and in another sense, have always written, and in another sense, am currently writing, and in another sense, am always writing, and in another sense, will never write.
Some days, I feel like I’ve been there.