The Fabric of the Cosmos the book, such as discussions revolving around classical physics, quantum mechanics, and cosmological physics. Chapter 2, "The Universe and the Bucket", features space as its key point. The question posed by Greene is this: "Is space a human abstraction, or is it a physical entity?" The key thought experiment is a spinning bucket of water, designed to make one think about what creates the force felt inside the bucket when it is spinning. The ideas of Isaac Newton, Ernst Mach, and Gottfried Leibniz on this thought experiment are discussed in detail. Chapter 3, "Relativity and the Absolute", focuses on spacetime.
Amount in controversy Amount in controversy Amount in controversy (sometimes called jurisdictional amount) is a term used in civil procedure to denote the amount at stake in a lawsuit, in particular in connection with a requirement that persons seeking to bring a lawsuit in a particular court must be suing for a certain minimum amount (or below a certain maximum amount) before that court may hear the case. In United States federal courts, the term currently applies only to cases brought under diversity jurisdiction, meaning that the court is able to hear the case only because it is between citizens of different states.