text: This book's fourth appendix, "Nagel's Brain," refutes the notion that humans are identical with their brains.
full_question: This book's fourth appendix, "Nagel's Brain," refutes the notion that humans are identical with their brains. This book resolves the question of whether it is ideal to have a child at the age of fourteen with what its author calls "Theory X." This text uses a thought experiment in which a man enters a cubicle presses a button and is teletransported to Mars to illustrate the metaphysical implications of self. This book imagines that there exists two different Hells, and discusses why Hell two seems preferable over Hell one by the impersonal average principle. It uses the example of a 10 billion person society paradoxically being less ideal than a much larger society, even though the lives of the second society's members are barely worth living. That paradox leads to this book's formulation of the "Repugnant Conclusion." For 10 points, name this philosophical text on population ethics, authored by Derek Parfit.
first_sentence: This book's fourth appendix, "Nagel's Brain," refutes the notion that humans are identical with their brains.
raw_answer: Reasons and Persons