Are there particular things, such as cabbages, kings, quarks, and galaxies? How many such things are there? Are there properties, the way things are? For example, is there a property of being green, circle, table, beautiful? Is truth itself a property? From the Big Bang to chemical bondings, does everything that changes have a cause? If yes, what is the causation? What is the essence of causation?
Is the whole nothing but some of its parts? Natural formations like the grains of sand, to rivers and lakes, mountains, and on to planets, stars, are any of these emergent wholes? The power of rice to nourish, the power of water to boil, the decay of certain atoms of radioactive isotopes, are these dispositions fundamental?
Why is time travel impossible? Are metaphysical questions nonsense and meaningless? Is it a reliable way to use reason to reach metaphysical conclusions? Is metaphysic unscientific?
These are some questions that the authors try to answer throughout the book. It starts out by giving a brief and clear introduction to the history of metaphysics with modern challenges and criticisms. The works of many philosophers are in the content of the book like (Aristotle, Leibniz, Kant, Sellars, Lewis, Armstrong, Inwagen, Descartes, Hume, Russel, Shoemaker) and so many others.
In philosophy as in other sciences, sometimes more than one theory fits into the data , and there are principles that are used to know which one is more useful; so Koons and Pickavance use Ockham’s Razor for comparing to know which theories will make the best account. The last chapter includes main arguments in defense of and against Metaphysics. But in the end, they reached their main goal which was to convey that metaphysics is inevitable. One of the weak points of the book is that its chapters are related, which makes it less useful since one can not read selected chapters without background. There are also minor issues with the book such as the misrepresentation of Nietzsche's doctrine of eternal return as a metaphysical theory for the possibility of ruling out classical bundle theory, which is actually a thought experiment. However one of the good points is there were terms used in the book like (Neo-Humeism, Powerism..etc.) that made it more simple and understandable for categorization of different arguments.
I read this book as an introduction to metaphysics, it is easy to understand even though some arguments are technical and detailed but their concept was still clear. The most enjoyable chapters for me were about Properties and Time, which greatly interested me personally.