Notes From An Experiment is a book in Lies of P.
Location[]
The book is found in the Estella Opera House. After entering the building from the Stargazer, go up the stairs on the right and then another set with blood on it. Follow the path for an opening on the right which brings the player to a room with a large swinging chandelier thats on fire. Drop down to the area below the chandelier and follow the exit to be brought to a hallway. At the end of the hallway is a room where the book can be found on the counter.
Transcript[]
The test subject's body is better than expected. Its Ergo coordination, physical sensitivity, and modification adaptability figures all exceed expectations. Couldn't ask for better results. All that's left is to make a decision.
I won't be able to undo my crime. I don't regret it. I've come too far for regret. I'm ready to become a god or a devil. I just hope that the owner of the body finds peace through this revenge. Perhaps, this prayer is a remnant of my last bit of humanity.