This world, ‘Adams worlds’, and the best of all possible worlds

2003 ◽  
Vol 39 (2) ◽  
pp. 145-163 ◽  
Author(s):  
STEPHEN GROVER
Keyword(s):  
Actual World ◽  
Possible Worlds ◽  
Worth Living ◽  
Possible World ◽  
The World ◽  
Rule Out

‘Adams worlds’ are possible worlds that contain no creature whose life is not worth living or whose life is overall worse than in any other possible world in which it would have existed. Creating an Adams world involves no wrongdoing or unkindness towards creatures on the part of the creator. I argue that the notion of an Adams world is of little value in theodicy. Theists are not only committed to thinking that this world was created without wrongdoing or unkindness but also must rule out the possibility that the world might have been better had God not existed. Nor is there much reason, independent of the availability of a satisfactory theodicy, for believing that the actual world is an Adams world. The need for a theodicy constructed along Leibnizian lines, incorporating the claim that this world is the best possible, is thus reinforced.

The World Essence

Dialogue ◽  
1990 ◽  
Vol 29 (2) ◽  
pp. 205-218 ◽  
Author(s):  
John Bigelow
Keyword(s):  
Natural Kind ◽  
Actual World ◽  
Possible Worlds ◽  
Natural Kinds ◽  
Laws Of Nature ◽  
Joint Paper ◽  
Essential Properties ◽  
The World ◽  
Natural Necessity

Recently, Brian Ellis came up with a neat and novel idea about laws of nature, which at first I misunderstood. Then I participated, with Brian Ellis and Caroline Lierse, in writing a joint paper, “The World as One of a Kind: Natural Necessity and Laws of Nature” (Ellis, Bigelow and Lierse, forthcoming). In this paper, the Ellis idea was formulated in a different way from that in which I had originally interpreted it. Little weight was placed on possible worlds or individual essences. Much weight rested on natural kinds. I thought Ellis to be suggesting that laws of nature attribute essential properties to one grand individual, The World. In fact, Ellis is hostile towards individual essences for any individuals at all, including The World. He is comfortable only with essential properties of kinds, rather than individuals. The Ellis conjecture was that laws of nature attribute essential properties to the natural kind of which the actual world is one (and presumably the only) member.

The Actual World

2015 ◽  
pp. 64-85
Author(s):  
Donald Rutherford
Keyword(s):  
Actual World ◽  
Possible Worlds ◽  
The World

This chapter discusses Gottfried Wilhelm Leibniz’s theory of the actual world as the best of all possible worlds. The chapter opens with Leibniz’s response to the two most basic questions of metaphysics: Why is there something rather than nothing? And, why do certain things exist while other equally possible things do not? It examines Leibniz’s critique of Baruch Spinoza’s metaphysics, with particular reference to the argument that God must make a choice among possible worlds because not all possibles are “compossible.” In addition, it explores Leibniz’s claim that the best of all possible worlds is the world containing the highest level of perfection or reality, intelligibility, order, and harmony. The chapter concludes by looking at three theological doctrines underlying Leibniz’s conception of the best of all possible worlds: divine creation, conservation, and concurrence.

Analysing Modality

2020 ◽  
pp. 22-73
Author(s):  
Alastair Wilson
Keyword(s):  
Actual World ◽  
Possible Worlds ◽  
Modal Realism ◽  
Possible World ◽  
Metaphysical Modality ◽  
Novel Theory ◽  
Reductive Theory

This chapter presents and defends the basic tenets of quantum modal realism. The first of these principles, Individualism, states that Everett worlds are metaphysically possible worlds. The converse of this principle, Generality, states that metaphysically possible worlds are Everett worlds. Combining Individualism and Generality yields Alignment, a conjecture about the nature of possible worlds that is closely analogous to Lewisian modal realism. Like Lewisian modal realism, Alignment entails that each possible world is a real concrete individual of the same basic kind as the actual world. These similarities render EQM suitable for grounding a novel theory of the nature of metaphysical modality with some unique properties. Also like Lewisian modal realism, quantum modal realism is a reductive theory: it accounts for modality in fundamentally non-modal terms. But quantum modal realism also has unique epistemological advantages over Lewisian modal realism and other extant realist approaches to modality.

scholarly journals Mathematical Proof on the Existential Necessity of the World

2021 ◽  
Author(s):  
Young Hyeon Lee
Keyword(s):  
Possible Worlds ◽  
Mathematical Proof ◽  
Multiple Impacts ◽  
Possible World ◽  
The World ◽  
World Theory ◽  
Modern Physics ◽  
Solid Foundation ◽  
Entire World ◽  
Null Set

The "best of all possible worlds" theory (hereinafter the "possible world theory") was presented by Leibniz many centuries ago, and provided an opportunity for metaphysics to understand the ontological meaning of the world in an in-depth way. Furthermore, the theory has multiple impacts on the multiverse theory of modern physics. However, considering the ontological questions of the world solely on linguistics logic leads to basing the possible world theory or the multiverse theory on relatively uncertain inferential reasons. In this study, symbolic logic was used to consider the possible world theory on a more solid foundation. The entire world was made into oneness, and tracking the existential process at the beginning of the world, realized the existential necessity of the world, even though the initial causal point of the world was assumed to be completely void (null set). The existential system in this study, was generalized without specific elements, apart from existence and non-existence. It was discovered that existential possibility and existential necessity are logically equivalent.

scholarly journals Induction and Natural Kinds Revisited

2021 ◽  
pp. 284-300
Author(s):  
Howard Sankey
Keyword(s):  
Actual World ◽  
Possible Worlds ◽  
Inductive Inference ◽  
Natural Kinds ◽  
Problem Of Induction ◽  
Shared Set ◽  
Essential Properties ◽  
The World ◽  
Dispositional Essentialism ◽  
Previous Account

Howard Sankey reconsiders a special issue closely connected with causal powers—the problem of induction. He addresses a deep version of problem of circularity originally raised by Psillos, and argues that the circularity can be avoided. The key is recognizing certain epistemically externalist results of the Megaric consequences of the commitment to dispositional essentialism. Circularity can be avoided, Sankey argues, because it is the way the world is, rather than the inductive inference itself, that grounds the reliability of the inductive inference in his previous account. What are doing the work for Sankey here are the Megaric consequences of his adoption of Ellis’s dispositional essentialism. The uniformity in question is one that stretches across possible worlds: nature is uniform in the precise sense that there are natural kinds whose members all possess a shared set of essential properties. The significance of this commitment lies in how the possible and the temporal intersect through restrictions placed on the accessibility relation between the actual and the possible. Ipso facto, when considering questions about the future behaviours of objects, which is how Sankey understands the problem of induction to be, the uniformity of nature can ground the reliability of beliefs about those future behaviours precisely because the domain of possibility is restricted to those worlds accessible to the actual world, which is fixed by the commitments of dispositional essentialism.

Monadic Perception

2015 ◽  
pp. 380-392
Author(s):  
Heinrich Schepers
Keyword(s):  
Possible Worlds ◽  
The State ◽  
Possible World ◽  
The Real ◽  
The World ◽  
Definition Of ◽  
Momentary State

This chapter discusses Gottfried Wilhelm Leibniz’s notion of monadic perception as a key component of his metaphysics. It first considers Leibniz’s thesis about monads, together with their perceptions and appetites, and his definition of perception as the representation of external variation in the internal. It then examines Leibniz’s belief that the world is a community of all compatible substances or monads, and that compatibility is the real principle underlying existence and the composition of possible worlds. The content of a monad’s perception is the momentary state of the whole world or, more precisely, the state of all the monads that are compatible with that monad. In every possible world these sequences are fully determinate. The chapter also analyzes Leibniz’s assertion that all monads are accompanied by a “manière de corps organique”.

Possible worlds

2018 ◽  
Author(s):  
Joseph Melia
Keyword(s):  
Modal Logic ◽  
Actual World ◽  
Possible Worlds ◽  
Abstract Objects ◽  
Causal Powers ◽  
Possible World ◽  
Space And Time ◽  
Wide Range ◽  
Concrete Objects

The concept of Possible worlds arises most naturally in the study of possibility and necessity. It is relatively uncontroversial that grass might have been red, or (to put the point another way) that there is a possible world in which grass is red. Though we do not normally take such talk of possible worlds literally, doing so has a surprisingly large number of benefits. Possible worlds enable us to analyse and help us understand a wide range of problematic and difficult concepts. Modality and modal logic, counterfactuals, propositions and properties are just some of the concepts illuminated by possible worlds. Yet, for all this, possible worlds may raise more problems than they solve. What kinds of things are possible worlds? Are they merely our creations or do they exist independently of us? Are they concrete objects, like the actual world, containing flesh and blood people living in alternative realities, or are they abstract objects, like numbers, unlocated in space and time and with no causal powers? Indeed, since possible worlds are not the kind of thing we can ever visit, how could we even know that such things exist? These are but some of the difficult questions which must be faced by anyone who wishes to use possible worlds.

Classical theism and modal realism are incompatible

2016 ◽  
Vol 52 (4) ◽  
pp. 561-572 ◽  
Author(s):  
CHAD VANCE
Keyword(s):  
Actual World ◽  
Possible Worlds ◽  
David Lewis ◽  
Counterpart Theory ◽  
Possible Worlds Semantics ◽  
Intrinsic Properties ◽  
Modal Realism ◽  
Possible World ◽  
Necessary Being ◽  
Special Case

AbstractThe classical conception of God is that of a necessary being. On a possible worlds semantics, this entails that God exists at every possible world. According to the modal realist account of David Lewis, possible worlds are understood to be real, concrete worlds – no different in kind from the actual world. But, modal realism is equipped to accommodate the existence of a necessary being in only one of three ways: (1) By way of counterpart theory, or (2) by way of a special case of trans-world identity for causally inert necessary beings (e.g. pure sets), or else (3) causally potent ones which lack accidental intrinsic properties. I argue that each of these three options entails unacceptable consequences – (1) and (2) are incompatible with theism, and (3) is incompatible with modal realism. I conclude that (at least) one of these views is false.

From “Possible Worlds” to “Possible Experience”. Real Possibility in Leibniz and Kant

Kant Yearbook ◽  
2014 ◽  
Vol 6 (1) ◽  
Author(s):  
Osvaldo Ottaviani
Keyword(s):  
Actual World ◽  
Possible Worlds ◽  
Pure Reason ◽  
Critique Of Pure Reason ◽  
Possible World ◽  
Short Account ◽  
Real Possibility ◽  
The Real ◽  
Conditions Of Possibility ◽  
Metaphysics Of Modality

AbstractThis paper moves from a disagreement with those interpreters who explain Kant’s doctrine of real possibility in terms of possible worlds. It seems to me that a possible world framework is too much indebted to the Leibnizian metaphysics of modality and, therefore, cannot serve to make sense of Kant’s theses. Leibniz’s theory of possibility, indeed, has been deeply criticized in Kant’s Critique of Pure Reason (CPR). Interestingly enough, however, Kant’s principal argument for rejecting that the field of what is possible is greater than the field of what is real was already anticipated by Leibniz. However, Leibniz employed it to demonstrate that there cannot be more than one actual world only (the others being purely possible ones). Moving from this fact, I argue that there is a certain tension between what Leibniz says about the actual world and his commitment to a plurality of possible worlds conceived as ideas in God’s mind. The first part of my paper is devoted to show that such a tension can be traced back to Leibniz’s claims about the relation between the possible and the real. In the second part, then, I maintain that Kant’s theory of real possibility grows from a dissatisfaction with (and a rejection of) Leibniz’s attempted solution to the problem of characterizing a kind of possibility narrower than the merely logical one and, nonetheless, not identical with existence. Finally, I present a short account of Kant’s theory of real possibility, based on the notion of transcendental conditions as conditions of possibility of experience, showing how it works in the case of the forms of intuition.

Free Will and the Problem of Evil

1987 ◽  
Vol 23 (2) ◽  
pp. 289-294 ◽  
Author(s):  
C. Mason Myers
Keyword(s):  
Free Will ◽  
Actual World ◽  
Possible Worlds ◽  
Problem Of Evil ◽  
The Other ◽  
Human Reason ◽  
Other Hand ◽  
The World ◽  
The Problem Of Evil ◽  
Traditional Theist

Hume after arguing for the compatibility of liberty and necessity, a view now known as soft determinism or compatibilism, noted that it is not ‘possible to explain distinctly, how the Deity can be the mediate cause of the actions of sin and moral turpitude’. It seems that Hume is correct if the explanation must show specifically why an omnipotent and omnibenevolent deity must permit certain actions that to human reason seem to be unnecessary evils. On the other hand if such specifity is not required, the soft determinist who also happens to be a theist can argue that it is possible that the actual world is the best of all possible worlds even though the reason for any specific apparent evil cannot be known. If seemingly evil choices are free in the soft determinist's sense but determined by an omnipotent and omniscient deity, then either that deity is not omnibenevolent or that deity has determined the world to have the maximum possible goodness through including seemingly evil choices in the scheme of things. Consequently if, as the traditional theist believes, the creator is omnibenevolent as well as omnipotent and omniscient, the occurrence of seemingly evil choices are necessary for maximizing the goodness of the whole.

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