Mike Almeida

Suppose it is a reasonable assumption that there is no possible world that is overall highest in value. Some theists have found in thatassumption a basis for actualizing a less-than-best world. Some atheists have found in that assumption a basis for actualizing no world at all. I present a dynamic choice model for the problem and describe the rationality assumptions necessary to generate a rational choice problem for an ideally rational agent. I show that at least one of the rationality assumptions—the Rational Perfection Principle—is invalid in the relevant sorts of models. I conclude that the existence of no best world presents no rational choice problem for ideally rational agents.

The book discusses the structure, content, and evaluation of cosmological arguments. The introductory chapter investigates features essential to cosmological arguments. Traditionally, cosmological arguments are distinguished by their appeal to change, causation, contingency or objective becoming in the world. But none of these is in fact essential to the formulation of cosmological arguments. Chapters 1-3 present a critical discussion of traditional Thomistic, Kalam, and Leibnizian cosmological arguments, noting various advantages and disadvantages of these approaches. Chapter 4 offers an entirely new approach to the cosmological argument - the approach of theistic modal realism. The proper explananda of cosmological arguments on this approach is not change, causation, contingency or objective becoming in the world. The proper explananda is the totality of metaphysical reality - all actualia and all possibilia. The result is the most compelling and least objectionable version of the cosmological argument.

The main aim in the forthcoming discussion is to contrast theistic modal realism and theistic actualist realism. Actualist realism is the dominant view among theists and presents the most serious challenge to theistic modal realism. I discuss various prominent forms of theistic actualist realism. I offer reasons for rejecting the view of metaphysical reality that actualist realism affords. I discuss theistic modal realism and show that the traditional conception of God is perfectly consistent with the metaphysics of genuine modal realism. Indeed theistic modal realism is more suited to traditional theism than is any version of actualist realism.

_The Metaphysics of Perfect Beings_ addresses the problems an Anselmian perfect being faces in contexts involving unlimited options. Recent advances in the theory of vagueness, the metaphysics of multiverses and hyperspace, the theory of dynamic or sequential choice, the logic of moral and rational dilemmas, and metaethical theory provide the resources to formulate the new challenges and the Anselmian responses with an unusual degree of precision. Almeida shows that the challenges arising in the unusual contexts involving unlimited options sometimes produce metaphysical surprise.

I distinguish restrictive and permissive multiverse solutions to the problems of evil and no best world. Restrictive multiverses do not admit a single instance of gratuitous evil and they are not improvable. I show that restrictive multiverses unacceptably entail that all modal distinctions collapse. I consider Timothy O’Connor’s permissive multiverse. I show that a perfect creator minimizes aggregative suffering in permissive multiverses only if the actual universe is not included in any actualizable multiverse. I conclude that permissive multiverses do not offer a credible solution to the problems of evil and no best world.

The celebrated free-will defence was designed to show that the ideal-world thesis presents no challenge to theism. The ideal-world thesis states that, in any world in which God exists, He can actualize a world containing moral good and no moral evil. I consider an intriguing two-stage argument that Michael Bergmann advances for the free-will defence, and show that the argument provides atheologians with no reason to abandon the ideal-world thesis. I show next that the existence of worlds in which every essence is transworld untrustworthy provides atheologians with no better reason to abandon the ideal-world thesis. I conclude that neither the free-will defence nor Bergmann's revised free-will defence is a convincing response to the atheological challenge. (Published Online February 17 2004).

William Rowe has argued that if there is an infinite sequence of improving worlds then an essentially perfectly good being must actualize some world in the sequence and must not actualize any world in the sequence. Since that is impossible, there exist no perfectly good beings. I show that Rowe's argument assumes that the concept of a maximally great being is incoherent. Since we are given no reason to believe that the concept of a maximally great being is incoherent we have no reason to believe Rowe's Argument from Improvability is sound

Nick Trakakis and Yujin Nagasawa criticise the argument in Almeida and Oppy . According to Trakakis and Nagasawa, we are mistaken in our claim that the sceptical theist response to evidential arguments from evil is unacceptable because it would undermine ordinary moral reasoning. In their view, there is no good reason to think that sceptical theism leads to an objectionable form of moral scepticism. We disagree. In this paper, we explain why we think that the argument of Nagasawa and Trakakis fails to overthrow our objection to sceptical theism.