Introduction: Explaining Contingency
The first part of this introduction sketches the main project of the book, and the structure of the arguments for my proposed quantum modal realism. The second part describes the unsatisfying present state of the metaphysics of modality, setting out what I take to be the most serious objections facing the best extant proposals. A naturalistic approach to metaphysics promises to resolve these objections by providing an account of modality that draws only on scientifically respectable theoretical resources. In the third part, I distinguish two big-picture approaches to the metaphysics of modality, and argue for the viability of an unfamiliar approach that takes the nature of contingency as the core phenomenon that a theory of modality needs to explain. In the fourth part, I explain my methodology and briefly defend the general project of naturalistic metaphysics.