Richard Otte

If one compares various skeptical arguments about our perceptual beliefs with arguments against scientific realism one immediately notices important similarities. Skeptical arguments about perceptual beliefs are often based on the premise that all of our perceptual beliefs could be wrong. Our experience is consistent with many different states of affairs; some familiar examples are hallucination, an evil demon, and brains in a vat. Thus it is claimed we have no reason to believe that the perceptual beliefs we normally form are true and alternative beliefs are false.One of the most powerful arguments against scientific realism is based on the claim that our data underdetermines our theory. There exist empirically equivalent theories, which means that there is no observation that could lead us to accept one and reject the other. Each member of a class of empirically equivalent theories will be equally supported by the evidence.

Theories of scientific explanation have taken different forms, but many philosophers are adopting models of explanation in which causation plays a central role. The intuition behind this idea is that we explain the occurrence of an event by displaying its causal history, or by listing its causes. As natural as this may seem, problems arise when we attempt to use this model of explanation with a system that is indeterministic. If we want to give a causal explanation of an event that is not causally determined, then we need a theory of causation which allows for causation in indeterministic systems.

In this chapter, I investigate two recent arguments by Michael Tooley that begin with some facts about evil and conclude that the probability of God existing is low or extremely low. Tooley's first argument fails because it relies on a very controversial assumption about unknown rightmaking and wrongmaking properties. Tooley's second argument makes use of some ideas about formal inductive logic and logical probability that Carnap developed, but this argument fails because it applies Carnap's ideas in ways that conflict with our inductive intuitions. Thus, Tooley's arguments depend on very controversial assumptions that should be rejected.

Alvin Plantinga's free will defense is based on the idea of transworld depravity. Plantinga claims that if every essence suffers from transworld depravity, then it is not possible for God to actualize a world in which there is moral good but no moral evil. I describe possible worlds that imply it is impossible for every essence to suffer from transworld depravity. I then show how to modify the concept of transworld depravity to avoid this problem, and formulate an alternative free will defense that is based on the concept of unobtainable worlds instead of transworld depravity.

No Abstract Alvin Plantinga's free will defense is based on the idea of transworld depravity. Plantinga claims that if an essence suffers from transworld depravity, then it is not possible for God to actualize a world in which the instantiation of that essence only does what is right. If every essence suffers from transworld depravity, then it is not possible for God to actualize a world in which there is moral good but no moral evil. I begin by describing possible worlds that imply it is impossible for every essence to suffer from transworld depravity. I then show how to modify the concept of transworld depravity to avoid this problem, and to allow for the possibility that every essence suffers from transworld depravity. This new formulation of transworld depravity has an interesting consequence, and this leads to an alternative free will defense that is not based on the concept of transworld depravity. I introduce the concept of an unobtainable world, and use this to develop an alternative version of the free will defense that is preferable to one based on the concept of transworld depravity.

This paper investigates the justification of certain beliefs central to scientific realism. Some have claimed that the underdetermination of a theory by empirical evidence implies that belief in the truth of the theory and in the existence of the corresponding unobservable entities is unjustified. It is argued that the justification of certain realist beliefs is similar to the justification of our perceptual beliefs. Neither are justified by argument from more basic beliefs, and their underdetermination by the evidence does not affect their justification.

It is reasonable to take Kierkegaard and Plantinga as presenting very different approaches to the rationality of adopting religious beliefs. Kierkegaard says Christian doctrines are absurd, and Plantinga argues that the existence of God is part of the deliverances of reason. I argue that in spite of these apparent differences, Kierkegaard and Plantinga agree on some foundational epistemological issues. I begin by exploring the topic of radical conversion, as discussed by van Fraassen. I use the notion of radical conversion as a tool, to focus our investigation and illuminate the agreements between Kierkegaard and Plantinga. Because of the role of passions and affections in epistemology, we will see that Kierkegaard and Plantinga share a basic epistemological outlook.

It is reasonable to take Kierkegaard and Plantinga as presenting very different approaches to the rationality of adopting religious beliefs. Kierkegaard says Christian doctrines are absurd, and Plantinga argues that the existence of God is part of the deliverances of reason. I argue that in spite of these apparent differences, Kierkegaard and Plantinga agree on some foundational epistemological issues. I begin by exploring the topic of radical conversion, as discussed by van Fraassen. I use the notion of radical conversion as a tool, to focus our investigation and illuminate the agreements between Kierkegaard and Plantinga. Because of the role of passions and affections in epistemology, we will see that Kierkegaard and Plantinga share a basic epistemological outlook

George Schlesinger has recently presented a reply to Hume’s argument concerning miracles. Schlesinger argues that probability theory and some simple assumptions about miracles show that testimony for a miracle increases the probability of God existing; furthermore this testimony can raise the probability of God existing enough that it is rational to believe that God exists. I argue that one of the assumptions that Schlesinger makes is false, and that the justification Schlesinger gives for it does not succeed. Thus I claim Schlesinger’s reply to Hume fails

In this article I investigate Rowe's recent probabilistic argument from evil. By using muddy Venn diagrams to present his argument, we see that although his argument is fallacious, it can be modified in a way that strengthens it considerably. I then discuss the recent exchange between Rowe and Plantinga over this argument. Although Rowe's argument is not an argument from degenerate evidence as Plantinga claimed, it is problematic because it is an argument from partitioned evidence. I conclude by discussing the modified argument and the epistemic framework Rowe is assuming in his argument

In this chapter probability and confirmation theory are used to investigate the problem of evil, concentrating on whether a theist should consider our ignorance of a good reason for God to permit evil to support a non-religious alternative over a typical theist's beliefs. It is argued that according to Likelihoodism, our ignorance of a good reason does not favor a competing hypothesis over the religious view that there is an incomprehensible good reason for God to permit evil. Bayesian accounts of comparative confirmation, which are alternatives to Likelihoodism, have the same result. Furthermore, according to both Likelihoodism and Bayesian accounts of contrastive confirmation, our ignorance of a good reason for God to permit evil may actually support typical religious beliefs over the alternative hypotheses.

In this paper I wish to argue that counterfactual analyses of causation are inadequate. I believe the counterfactuals that are involved in counterfactual analyses of causation are often false, and thus the theories do not provide an adequate account of causation. This is demonstrated by the presentation of a counterexample to the counterfactual analyses of causation. I then present a unified theory of causation that is based upon probability and counterfactuals. This theory accounts for both deterministic and indeterministic causation, and is not subject to many of the traditional problems facing theories of causation

A recent discussion of Hume’s argument concerning the rationality of accepting a belief that a miracle has occurred is given by J. L. Mackie in The Miracle of Theism. Mackie believes that Hume’s argument is essentially correct, although he attempts to clarify and strengthen it. Any version of Hume’s argument depends upon one’s conception of miracles and laws of nature; I will argue that Mackie commits a simple logical error and that given his conception of laws of nature and miracles there is no reason to reject rational belief in miracles

Recent discussion of the problem of evil has centered around what is known as the probabilistic or evidential argument from evil. According to this argument the evil in our world is evidence against the existence of God, even though evil is logically consistent with God’s existing. Based on this it is claimed it is irrational to believe one of the traditional theistic religions, unless there is overwhelming positive evidence to counter this negative evidence. One of the most important and widely discussed versions of this argument is due to Paul Draper.1 In this paper I will look at Draper’s argument and argue that he has made a simple fundamental error; as a result his argument is irrelevant to most theists. After discussing this error in Draper’s argument, I will discuss probabilistic arguments from evil from the perspective of confirmation theory. The error in Draper’s argument is easily made and could occur in any probabilistic argument from evil; looking at confirmation theory and probabilistic arguments from evil will provide insight into reasoning about evil and belief in God.