This book is a defense of modal realism; the thesis that our world is but one of a plurality of worlds, and that the individuals that inhabit our world are only a few out of all the inhabitants of all the worlds. Lewis argues that the philosophical utility of modal realism is a good reason for believing that it is true.

An expansive, yet succinct, analysis of the Philosophy of Religion – from metaphysics through theology. Organized into two sections, the text first examines truths concerning what is possible and what is necessary. These chapters lay the foundation for the book’s second part – the search for a metaphysical framework that permits the possibility of an ultimate explanation that is correct and complete. A cutting-edge scholarly work which engages with the traditional metaphysician’s quest for a true ultimate explanation of the most (...) general features of the world we inhabit Develops an original view concerning the epistemology and metaphysics of modality, or truths concerning what is possible or necessary Applies this framework to a re-examination of the cosmological argument for theism Defends a novel version of the Leibnizian cosmological argument. (shrink)

• If we always see b after a, we are justified in thinking b will follow a the next time we see a. • “A hundred instances or experiments on one side, and fifty on another, afford a doubtful expectation of any event; though a hundred uniform experiments, with only one that is contradictory, reasonably beget a pretty strong degree of assurance” (74).

David Wallace argues that we should take quantum theory seriously as an account of what the world is like--which means accepting the idea that the universe is constantly branching into new universes. He presents an accessible but rigorous account of the 'Everett interpretation', the best way to make coherent sense of quantum physics.

The multiverse hypothesis is growing in popularity among theistic philosophers because some view it as the preferable way to solve certain difficulties presented by theistic belief. In this paper, I am concerned specifically with its application to Rowe’s problem of no best world, which suggests that God’s existence is impossible given the fact that the world God actualizes must be unsurpassable, yet for any given possible world, there is one greater. I will argue that, as a solution to the problem (...) of no best world, the multiverse hypothesis fails. To defend my thesis, I will first define the multiverse hypothesis and articulate the problem of no best world and how the multiverse hypothesis is thought to solve it. I will then show that the solution fails by articulating two problems that have been mentioned, but not developed, in the literature—what I call the problem of no highest standard and the problem of multiverse cardinality. In each case, after articulating the problem, I will offer possible responses to the problem and show why those responses are inadequate. (shrink)

Suppose that God exists, and that God does not violate the laws of nature he created for the world. God can nevertheless act in the world, by acting at the indeterministic quantum level. This chapter makes two specific points about God’s quantum action. First, on some ways of understanding quantum mechanics (specifically, the GRW theory, and the associated Continuous Spontaneous Localization theories), God’s actions are almost unlimited, contrary to those who say that God would be quite constrained in his action, (...) if he only acted at the indeterministic quantum level. Second, on these ways of understanding quantum mechanics, God’s actions in the world need not be episodic, contrary to what for example John Polkinghorne has claimed about God’s quantum action. This discussion builds on discussions by Al Plantinga about noninterventionist special divine action. (shrink)

An extraordinary and challenging synthesis of ideas uniting Quantum Theory, and the theories of Computation, Knowledge and Evolution, Deutsch's extraordinary book explores the deep connections between these strands which reveal the fabric ...

Skeptical theists argue that no seemingly unjustified evil (SUE) could ever lower the probability of God's existence at all. Why? Because God might have justifying reasons for allowing such evils (JuffREs) that are undetectable. However, skeptical theists are unclear regarding whether or not God's existence is relevant to the existence of JuffREs, and whether or not God's existence is relevant to their detectability. But I will argue that, no matter how the skeptical theist answers these questions, it is undeniable that (...) the skeptical theist is wrong; SUEs lower the probability of God's existence. To establish this, I will consider the four scenarios regarding the relevance of God's existence to the existence and detectability of JuffREs, and show that in each—after we establish our initial probabilities, and then update them given the evidence of a SUE—the probability of God's existence drops. (shrink)

ExtractGottfried Wilhelm Leibniz was quite a thinker. As a philosopher, he made major contributions to epistemology, logic, the philosophy of religion and metaphysics. He was also an accomplished scientist, historian, and linguist. In mathematics, he built the first calculating machine able to perform all four elementary arithmetical operations, and devised the first proper formulation of binary numbers. Although Chinese and Indian scholars had developed several types of rudimentary binary notation centuries earlier, the number system at the heart of every modern (...) computer was put together by Leibniz. As if that were not enough to guarantee his immortality, he also developed calculus independently of Isaac Newton, and it is mostly Leibniz's version that survives in our textbooks, due to his superior notation.Send article to KindleTo send this article to your Kindle, first ensure [email protected] is added to your Approved Personal Document E-mail List under your Personal Document Settings on the Manage Your Content and Devices page of your Amazon account. Then enter the ‘name’ part of your Kindle email address below. Find out more about sending to your Kindle. Find out more about sending to your Kindle. Note you can select to send to either the @free.kindle.com or @kindle.com variations. ‘@free.kindle.com’ emails are free but can only be sent to your device when it is connected to wi-fi. ‘@kindle.com’ emails can be delivered even when you are not connected to wi-fi, but note that service fees apply. Find out more about the Kindle Personal Document Service.FINE-TUNING THE MULTIVERSEVolume 12, Issue 33Tim WilkinsonDOI: https://doi.org/10.1017/S1477175612000292Your Kindle email address Please provide your Kindle [email protected]@kindle.com Available formats PDF Please select a format to send. By using this service, you agree that you will only keep articles for personal use, and will not openly distribute them via Dropbox, Google Drive or other file sharing services. Please confirm that you accept the terms of use. Cancel Send ×Send article to Dropbox To send this article to your Dropbox account, please select one or more formats and confirm that you agree to abide by our usage policies. If this is the first time you use this feature, you will be asked to authorise Cambridge Core to connect with your account. Find out more about sending content to Dropbox. FINE-TUNING THE MULTIVERSEVolume 12, Issue 33Tim WilkinsonDOI: https://doi.org/10.1017/S1477175612000292Available formats PDF Please select a format to send. By using this service, you agree that you will only keep articles for personal use, and will not openly distribute them via Dropbox, Google Drive or other file sharing services. Please confirm that you accept the terms of use. Cancel Send ×Send article to Google Drive To send this article to your Google Drive account, please select one or more formats and confirm that you agree to abide by our usage policies. If this is the first time you use this feature, you will be asked to authorise Cambridge Core to connect with your account. Find out more about sending content to Google Drive. FINE-TUNING THE MULTIVERSEVolume 12, Issue 33Tim WilkinsonDOI: https://doi.org/10.1017/S1477175612000292Available formats PDF Please select a format to send. By using this service, you agree that you will only keep articles for personal use, and will not openly distribute them via Dropbox, Google Drive or other file sharing services. Please confirm that you accept the terms of use. Cancel Send ×Export citation. (shrink)

Roger White (God and design, Routledge, London, 2003) claims that while the fine-tuning of our universe, $\alpha $ , may count as evidence for a designer, it cannot count as evidence for a multiverse. First, I will argue that his considerations are only correct, if at all, for a limited set of multiverses that have particular features. As a result, I will argue that his claim cannot be generalised as a statement about all multiverses. This failure to generalise, I will (...) argue, is also a feature of design hypotheses. That is, design hypotheses can likewise be made insensitive or sensitive to the evidence of fine-tuning as we please. Second, I will argue that White is mistaken about the role that this evidence plays in fine-tuning discussions. That is, even if the evidence of fine-tuning appears to support one particular hypothesis more strongly than another, this does not always help us in deciding which hypothesis to prefer. (shrink)

It is claimed that the universe appears to be fine-tuned so as to admit the development of life. In this article Rodney Holder examines the evidence for fine-tuning and the chief rival explanation to design, namely the existence of a.

In recent decades, there has been astonishing growth in scientific theorizing about multiverses. Once considered outré or absurd, multiple universe theories appear to be gaining considerable scientific respectability. There are, of course, many such theories, including (i) Everett’s (1957) many worlds interpretation of quantum mechanics, defended by Deutsch (1997) and others; (ii) Linde’s (1986) eternal inflation view, which suggests that universes form like bubbles in a chaotically inflating sea; (iii) Smolin’s (1997) fecund universe theory, which proposes that universes are generated (...) through black holes; (iv) the cyclic model, recently defended using string/M theory by Steinhardt and Turok (2007), which holds that distinct universes are formed in a never-ending sequence of Big Bangs and Big Crunches; and (v) Tegmark’s (2007) “Level IV” multiverse, which contains many universes governed by distinct mathematical and scientific laws. While not all of these preclude each other, the details and implications of each one are hotly contested. In one area within the philosophy of religion (the debate concerning the “fine-tuning” argument), scientific multiverse theories are widely held to be hostile to theism. This is because such theories appear to account for the relevant data – the biophilic parameters of the universe we inhabit – without appeal to an intelligent designer. Yet, in recent years, several philosophers and one physicist have offered reasons for thinking that if theism is true, the actual world comprises (or probably comprises) many universes. I first set out some requirements – both scientific and otherwise – for such a theory. I then survey some problems such theories are held to face, and some prospects they are thought to have. Finally, I examine arguments both for and against the claim that multiverse theories can help theists respond to the problem of evil. I conclude that such theories advantage neither the theist or the atheist in the debate about evil: they merely require reframing arguments from evil. (shrink)

In this paper I shall define a thesis I shall call ' determinism ', and argue that it is incompatible with the thesis that we are able to act otherwise than we do. Other theses, some of them very different from what I shall call ' determinism ', have at least an equal right to this name, and, therefore, I do not claim to show that every thesis that could be called ' determinism ' without historical impropriety is incompatible with (...) free will. I shall, however, assume without argument that what I call ' determinism ' is legitimately so called. In Part I, I shall explain what I mean by ' determinism '. In Part II, I shall make some remarks about 'can'. In Part III, I shall argue that free will and determinism are incompatible. In Part IV, I shall examine some possible objections to the argument of Part III. I shall not attempt to establish the truth or falsity of determinism, or the existence or nonexistence of free will. (shrink)

This paper argues that Pascal's formulation of his famous wager argument licenses an inference about God's nature that ultimately vitiates the claim that wagering for God is in one's rational self-interest. In particular, it is argued that if we accept Pascal's premises, then we can infer that the god for whom Pascal encourages us to wager is irrational. But if God is irrational, then the prudentially rational course of action is to refrain from wagering for him.

The Nature of God explores a perennial problem in the philosophy of religion.

I formulate and defend a version of the many universes (or multiverse) reply to the atheistic argument from evil. Specifically, I argue that (i) if we know that any argument from evil (be it a logical or evidential argument) is sound, then we know that God would be (or at least probably would be) unjustified in actualizing our universe. I then argue that (ii) there might be a multiverse and (iii) if so, then we do not know that God would (...) be (or at least probably would be) unjustified in actualizing our universe. It follows that we cannot know that the atheistic argument from evil is sound, in which case we cannot be certain that the argument succeeds, and so it is rational to refuse to reject theism because of such arguments. (shrink)

In this paper I show that two arguments for the inconsistency of skeptical theism fail. After setting up the debate in Introduction section, I show in The initial debate section why Mylan Engel’s argument (Engel 2004) against skeptical theism does not succeed. In COST section I strengthen the argument so that it both avoids my reply to Engel and parallels Jon Laraudogoitia’s argument against skeptical theism (Laraudogoitia 2000). In COST* section, I provide three replies—one by an evidentialist theist, one by (...) a closure-denying theist, and one by a necessitarian theist, and argue that the necessitarian’s reply successfully rebuts the inconsistency charge. I conclude that skeptical theism which accepts God’s necessary existence is immune to both kinds of arguments for its inconsistency. (shrink)

The past forty years or so have witnessed a renaissance in the philosophy of religion. New tools (modal logic, probability theory, and so on) and new historical research have prompted many thinkers to take a fresh look at old topics (God’s existence, the problem of evil, faith and reason, and the like). Moreover, sophisticated examinations of contentious new issues, such as the problem of religious diversity or the role of emotions and other non-evidential factors in shaping rationally held religious beliefs, (...) have also emerged. Addressing the need for an authoritative reference work to make sense of this rapidly growing and ever more complex corpus of scholarly literature, Philosophy of Religion is a new title in the Routledge Major Works series, Critical Concepts in Philosophy. Edited by a leading scholar, it is a four-volume collection which brings together key examples of the most important recent work, together with carefully selected historical pieces needed to understand them. Volume I focuses on concepts of the divine while Volume II explores arguments for and against the existence of a divine reality, with special attention to the problem of evil, the problem of divine hiddenness, and the case for naturalism. Volume III and the first part of Volume IV are devoted to broadly epistemic issues: the cognitive value of religious experience; the proper role of evidence in the formation of religious belief; the nature of justified religious belief; and pragmatic arguments for religious belief. The remainder of Volume IV introduces some of the best recent work on religious diversity, tolerance, and the public role of religion in a pluralistic society. The Philosophy of Religion is fully indexed and has a comprehensive introduction, newly written by the editor, which places the material in its historical and intellectual context. It is an essential work of reference and is destined to be valued by scholars and students as a vital one-stop research resource. Available now at a special introductory price. This price is applicable until 3 months after publication. For more information, please contact us ( [email protected] ). (shrink)

From pre-Christian times until the present day, philosophers have discussed whether, given evil, belief in God can logically be maintained. Theists and non-theists remain unconvinced by one another's arguments. This study re-examines the question of God and evil from a neutral standpoint and claims that neither side has come to adequate grips either with the question itself or with the other side's case, chiefly because of failure to distinguish the kinds of problem raised by evil.

Proof and perception : the context of the argumentum cartesianum -- Refutations of atheism : ontological arguments in English philosophy, 1652-1705 -- Being and intuition : Malebranche's appropriation of the argument -- An adequate conception : the argument in Spinoza's philosophy -- Ontological arguments in Leibniz and the German enlightenment -- Kant's systematic critique of the ontological argument -- Hegel's reconstruction of the argument.

The book falls into four segments. In the first (Chapter 1), the particular conception of deity that has been predominant in western civilization—the theistic idea of God—is explicated and distinguished from several other notions of the divine. The second segment considers the major reasons that have been advanced in support of the belief that the theistic God exists. In chapters 2 through 4 the three major arguments for the existence of God are discussed, arguments which appeal to facts supposedly available (...) to any rational person, whether religious or not. Chapter 5 considers religious and mystical experience as a source and justification for theistic belief. And in Chapter 6 we examine the role that faith may play in the formation and justification of religious belief. We also consider the important issue of whether belief in God may be entirely rational quite apart from any evidence in its behalf. The third segment undertakes an examination of the problem of evil, which some have thought to provide rational grounds for atheism, the belief that the theistic God does not exist. A number of topics quite central to theistic religion are considered in the fourth segment of the book, chapters 8 through 11. These topics include miracles, the question of life after death, problems in relating the idea of divine foreknowledge to the belief in human freedom, and problems arising from the existence of diverse religions. (shrink)

This book is a unique contribution to the philosophy of religion. It offers a comprehensive discussion of one of the most famous arguments for the existence of God: the ontological argument. The author provides and analyses a critical taxonomy of those versions of the argument that have been advanced in recent philosophical literature, as well as of those historically important versions found in the work of St Anselm, Descartes, Leibniz, Hegel and others. A central thesis of the book is that (...) ontological arguments have no value in the debate between theists and atheists. There is a detailed review of the literature on the topic (separated from the main body of the text) and a very substantial bibliography, making this volume an indispensable resource for philosophers of religion and others interested in religious studies. (shrink)

The late John L. Mackie, formerly of University College, Oxford.

ports the thesis that there exist very many universes. The view has found favor with a number of philosophers such as Derek Parfit ~1998!, J. J. C. Smart ~1989! and Peter van Inwagen ~1993!.1 My purpose is to argue that this is a mistake. First let me set out the issue in more detail.

This essay examines some of the arguments in David Deutsch's book The Fabric of Reality , chief among them its case for the so-called many-universe interpretation of quantum mechanics (QM), presented as the only physically and logically consistent solution to the QM paradoxes of wave/particle dualism, remote simultaneous interaction, the observer-induced 'collapse of the wave-packet', etc. The hypothesis assumes that all possible outcomes are realized in every such momentary 'collapse', since the observer splits off into so many parallel, coexisting, but (...) epistemically non-interaccessible 'worlds' whose subsequent branchings constitute the lifeline-or experiential world-series- for each of those proliferating centres of consciousness. Although Deutsch concedes that his 'multiverse' theory is counter-intuitive, he none the less takes it to be borne out beyond question by the sheer observational/predictive success of QM and the conceptual dilemmas that supposedly arise with alternative (single-universe) accounts. Moreover, he claims the theory resolves a range of longstanding philosophical problems, notably those of mind/body dualism, the various traditional paradoxes of time, and the freewill/determinism issue. The essay suggests on the contrary, that Deutsch unwittingly transposes into the framework of presentday quantum debate speculative themes from the history of rationalist metaphysics, often with bizarre or philosophically dubious results, and that he rules out at least one promising rival account, namely Bohm's 'hidden variables' theory. It goes on to consider reasons for resistance to that theory among proponents of the 'orthodox' (Copenhagen) doctrine, and for the strong anti-realist, at times even irrationalist bias that has characterized much of this discussion since Bohr's debates with Einstein about quantum non-locality, observer-intervention, and the limits of precise measurement. Finally, the contrast is pointed out between Deutsch's ontologically extravagant use of the many-worlds hypothesis (akin to certain ideas advanced by speculative metaphysicians from Leibniz down) and those realist modes of counterfactual reasoning- e.g. in Kripke and the early Putnam- which deploy similar arguments to very different causal-explanatory ends. (shrink)

This work has been selected by scholars as being culturally important, and is part of the knowledge base of civilization as we know it. This work was reproduced from the original artifact, and remains as true to the original work as possible. Therefore, you will see the original copyright references, library stamps (as most of these works have been housed in our most important libraries around the world), and other notations in the work. This work is in the public domain (...) in the United States of America, and possibly other nations. Within the United States, you may freely copy and distribute this work, as no entity (individual or corporate) has a copyright on the body of the work. As a reproduction of a historical artifact, this work may contain missing or blurred pages, poor pictures, errant marks, etc. Scholars believe, and we concur, that this work is important enough to be preserved, reproduced, and made generally available to the public. We appreciate your support of the preservation process, and thank you for being an important part of keeping this knowledge alive and relevant. (shrink)

This Element analyzes the various forms that design arguments for the existence of God can take, but the main focus is on two such arguments. The first concerns the complex adaptive features that organisms have. Creationists who advance this argument contend that evolution by natural selection cannot be the right explanation. The second design argument - the argument from fine-tuning - begins with the fact that life could not exist in our universe if the constants found in the laws of (...) physics had values that differed more than a little from their actual values. Since probability is the main analytical tool used, the book provides a primer on probability theory. (shrink)