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Naturalism

As defined by philosopher Paul Draper, naturalism is "the hypothesis that the natural world is a closed system" in the sense that "nothing that is not a part of the natural world affects it." More simply, it is the denial of the existence of supernatural causes. In rejecting the reality of supernatural events, forces, or entities, naturalism is the antithesis of supernaturalism.

As a substantial view about the nature of reality, it is often called metaphysical naturalism, philosophical naturalism, or ontological naturalism to distinguish it from a related methodological principle. Methodological naturalism, by contrast, is the principle that science and history should presume that all causes are natural causes solely for the purpose of promoting successful investigation. The idea behind this principle is that natural causes can be investigated directly through scientific method, whereas supernatural causes cannot, and hence presuming that an event has a supernatural cause for methodological purposes halts further investigation. For instance, if a disease is caused by microbes, we can learn more about how microbes interact with the body and how the immune system can be activated to destroy them, or how the transmission of microbes can be contained. But if a disease is caused by demons, we can learn nothing more about how to stop it, as demons are said to be supernatural beings unconstrained by the laws of nature (unlike natural causes).

In utilizing methodological naturalism, science and history do not assume a priori that, as a matter of fact, supernatural causes don't really exist. There is no conceptual conflict between practicing science or history and believing in the supernatural. However, as several of our authors argue below (e.g., Augustine, Fales, Forrest, and Oppy), methodological naturalism would not be as stunningly successful as it has in fact been if metaphysical naturalism were false. Thus the de facto success of methodological naturalism provides strong empirical evidence that metaphysical naturalism is probably true.

-- Keith Augustine


Materialism
Pluralistic Naturalism

Metaphysical Naturalism

Animadversions on Kitzmiller v. Dover: Correct Ruling, Flawed Reasoning (2009) by Evan Fales

In his recent opinion on the legality of teaching intelligent design in the classroom (Kitzmiller et al. v. Dover Area School Board), Judge John Jones correctly found against Dover, but did so by employing mistaken premises. Two unsound arguments appear in Section 4 of Kitzmiller, "Whether ID is Science." The first argument seeks to establish that ID is not a science by showing that it invokes supernatural causes outside of the purview of science. The second argument purports to show that even successful criticisms of Darwinism do not constitute evidence for ID. Neither flaw enhances the scientific credentials of ID, but each bolsters the erroneous perception that Darwinists assume as a matter of faith that either supernatural causes do not exist, or else cannot be investigated scientifically. A natural implication of this erroneous perception is that Darwinism is simply an alternative kind of faith, but in fact both Darwinism and many supernaturalistic hypotheses are amenable to empirical test.

Defending Naturalism as a Worldview: A Rebuttal to Michael Rea's World Without Design (2003) by Richard Carrier

This is a rebuttal of Rea's claim that naturalism "is without rational foundation." This essay shows that adopting the "research program" of basic empiricism is universally appealing, and since naturalism as a "worldview" follows from adopting basic empiricism and applying it to the facts of the world, naturalism has a rational foundation. Rea's conclusion that naturalism must abandon materialism and realism about material objects and other minds because naturalism cannot "discover" intrinsic modal properties is also disproved.

A Defense of Naturalism (2001) by Keith Augustine

In the first part of this essay Augustine discusses what naturalism entails for one's ontology, considers various ideas about how to define the categories "natural" and "nonnatural," and develops criteria for identifying a potentially supernatural event. In part 2 he presents a persuasive empirical case for naturalism based on the lack of uncontroversial evidence for any potential instances of supernatural causation, particularly in our modern scientific account of the history of the universe and in modern parapsychological research.

Defining Our Mission (2002) by Richard Carrier

A brief essay explaining the mission of the Internet Infidels, especially our focus on Metaphysical Naturalism. Includes a reading list of books on Naturalism and a discussion of our values and how the Secular Web is fulfilling its mission.

The Empirical Case for Metaphysical Naturalism (1999) by Jeffery Jay Lowder

Lowder argues that the physical dependence of minds upon the brain, along with the argument from evil, can be used to construct an empirical case for metaphysical naturalism.

Evolutionary Naturalism, Theism, and Skepticism about the External World (2000) by J. Wesley Robbins

In the closing chapter of Warrant and Proper Function Alvin Plantinga claims that the combination of naturalism and evolutionary theory is epistemologically self-defeating. As Robbins points out, however, Plantinga's argument only applies those who hold a "generically Cartesian" picture of the mind, not to those who hold a "generically pragmatist" view of mind. What Plantinga has shown to be self-defeating, if anything, is the generically Cartesian view of our minds. While generic Cartesianism generates the problem of knowledge of the external world, the generically pragmatist view of mind dissolves it.

Fundamental Flaws in Mark Steiner's Challenge to Naturalism in The Applicability of Mathematics as a Philosophical Problem (2003) by Richard Carrier

This is a critical rebuttal to Mark Steiner's book The Applicability of Mathematics as a Philosophical Problem (1998). Steiner argues that naturalism appears to be false because nature is fundamentally mathematical. Carrier argues otherwise.

God or Blind Nature? Philosophers Debate the Evidence (2007) [ Index ] edited by Paul Draper

The Great Debate, God or Blind Nature? Philosophers Debate the Evidence, aims to bring together nine distinguished philosophers in a series of four debates, each with a different focus on evidence for and against naturalism and theism. The first debate addresses evidence concerning the nature of the mind and the will as it relates to the truth of naturalism and theism. The second debate introduces an argument from evil informed by evolutionary biology and considers whether evolutionary naturalism is self-defeating. The third debate appeals to the physical sciences, alternatively providing a cosmological argument against theism on the one hand and considering design arguments against naturalism on the other. The final debate revolves around why, if God exists, he remains hidden from so many people, and whether we should believe in God for practical reasons even in the absence of compelling evidence for his existence.

Methodological Naturalism and Philosophical Naturalism: Clarifying the Connection (2000) by Barbara Forrest

Forrest argues that philosophical (or metaphysical) naturalism is supported by (1) the demonstrated success of methodological naturalism; (2) the massive amount of knowledge gained by methodological naturalism; (3) the lack of a method or epistemology for knowing the supernatural; and (4) the subsequent lack of evidence for the supernatural.

An assessment of the 1998 debate between William Provine and Eugenie Scott on methodological vs. philosophical naturalism. Pigliucci argues that (i) the distinction smacks of political correctness, designed to maintain NSF funding of evolutionary biology research; and (ii) metholodogical naturalism implies philosophical naturalism.

Naturalism vs. Theism: The Carrier-Wanchick Debate (2006) [ Index ]

In this online debate between Richard Carrier and Tom Wanchick, Carrier opens with a discussion of method followed by 5 arguments for naturalism and 2 arguments against theism, while Wanchick opens with 9 arguments for theism. In the first rebuttals, each debater criticizes the arguments offered by the other in the opening statements. In the second rebuttals, each debater defends their opening arguments against the criticisms of the other in the first rebuttals. Both closing statements focus on the purported deficiencies of the other debater's overall case.

Naturalistic Inquiry by Peter Kirby

Kirby explains what naturalism means to him and why he is a naturalist.

Plantinga's Probability Arguments Against Naturalism and Evolution (1997) by Brandon Fitelson and Elliott Sober (Off Site PDF)

In Chapter 12 of Warrant and Proper Function, Alvin Plantinga constructs two arguments against naturalistic evolution, suggesting that (unlike traditional theism) it is self-defeating. Both arguments hinge on the idea that naturalistic evolution cannot account for the reliability of human cognitive faculties. Fitelson and Sober conclude that neither theism or naturalism has an answer to hyperbolic doubt, as neither can construct a non-question-begging argument that refutes global skepticism.

Science, Confirmation, and the Theistic Hypothesis (1986) [ Index ] by Keith M. Parsons

This thesis examines various attempts to construe theism as an explanatory hypothesis and to defend it with arguments similar to those employed in the confirmation of scientific hypotheses. It is the aim of this work to show that such a construal fails to confirm theism and in actuality leads to its disconfirmation.

The Presumption of Naturalism and the Probability of Miracles: A Reply to Keith Parsons (2011) by Don McIntosh

In Chapter Four of Science, Confirmation, and the Theistic Hypothesis, Keith Parsons defends the dictum that extraordinary claims require extraordinary evidence as part of a general critique of miracle claims which aims to defend naturalism as a rational operating philosophy against potential defeaters. In this defense of miracle claims Don McIntosh argues, first, that for any unknown the burden of proof falls equally upon naturalists and supernaturalists; second, to repudiate all miracle claims in one fell swoop with a mere presumption of naturalism renders naturalism unfalsifiable and unscientific; and third, estimating the prior probability of miracles introduces an element of subjectivity that makes any general probabilistic argument against them suspect. These points leave open the possibility of confirming specific miracle claims on the basis of historical evidence and eyewitness testimony.

A Sermon on the Mount (1996) by Delos McKown

Both the teachings of old time and Jesus' new teachings are predicated on the same profoundly mistaken views of human nature, lodged in an egregiously mistaken mythology, a mythology of enormous importance for us because it is one of the wellsprings of Western culture.

Why I Am Not a Christian (2006) by Richard Carrier

In this explanation of why he is not a Christian, Richard Carrier outlines the top four reasons why he rejects Christianity: God's silence, God's inactivity, lack of evidence, and the overt conflict between discovered reality and Christian theory. Though a lay exposition geared at a general audience, the essay appeals to a variety of atheistic arguments, including the argument from religious confusion, an evidential argument from evil, divine hiddenness, the argument from biological evolution, and the argument from physical minds. In an interesting twist on the argument from design, Carrier turns the fine-tuning argument on its head, noting that several features of our universe--features predicted by naturalism--are highly improbable if Christian theism is true.

Why I Am Not a Christian (2006) by Graham Oppy

Graham Oppy explains the ways in which his reasons for rejecting Christianity differ from those offered by Bertrand Russell in his famous paper of the same title. In section I, Oppy considers how Christianity should be characterized, the best way to build a case against theism, and the nonrational reasons why people believe in God, among other things. In section II, he offers an account of his journey to unbelief and the philosophy of religion. By section III, Oppy explains why he is not a Christian, as well as some of the things that he does believe. Here he pines in on appeals to contingency and causality in theistic arguments, the problem of evil, free will, the mind-body problem, the history of the universe, human history, and the historicity of the Gospels--outlining his "supervenient naturalism" along the way. Oppy wraps up by considering the meaning of life and whether virtuous behavior relates to Christian belief.

Methodological Naturalism

Enterprising Science Needs Naturalism (1997) (Off Site) by Wesley Elsberry

Elsberry argues that scientific method excludes appeals to supernatural causation because naturalism is a corollary to the scientific presumption that the universe is comprehensible. Even if supernatural causation occurs, the presumption of naturalism is valuable because naturalistic explanations are often correct and "are the only known variety [of explanations] that produce an increase in scientific comprehension."

Justifying Methodological Naturalism (2002) by Michael Martin

In Tower of Babel, Robert T. Pennock faults the new creationists for failing to realize that science is committed--not to ontological naturalism (the view that only natural processes or events exist)--but rather to methodological naturalism (a position which, although it does not deny the possibility of the existence of the supernatural, assumes for the sake of inquiry that it does not exist). Martin considers how one can reject ontological naturalism while justifying methodological naturalism as an appropriate stance in the context of science.

Methodological Naturalism and the Supernatural (1997) by Mark I. Vuletic

Paper rejecting the claims that methodological naturalism leaves no room for appeals to the supernatural in science and that scientists must be methodological naturalists to fulfill the aims of science, as well as the claim that scientists should abandon methodological naturalism.

Naturalism is an Essential Part of Science and Critical Inquiry (1997) by Steven Schafersman (Off Site)

Our modern civilization depends totally for its existence and future survival on the methods and fruits of science, naturalism is the philosophy that science created and that science now follows with such success, yet the great majority of humans believe in the antithesis of naturalism--supernaturalism. This paper proposes to show that naturalism is essential to the success of scientific understanding, and it examines and criticizes the claims of pseudoscientists and theistic philosophers that science should employ supernatural explanations as part of its normal practice.

Supernaturalist Explanations and the Prospects for a Theistic Science (1997) by Robert T. Pennock (Off Site)

Paper presented at a conference on "Naturalism, Theism and the Scientific Enterprise," March 20-23, 1997, at the University of Texas, Austin. Pennock disputes the soundness of Phillip Johnson's proposal for "Theistic Science" in this detailed paper, which expands and draws on material from Pennock's book Tower of Babel: The Evidence Against the New Creationism.

Reviews

Moreland's 'Christian Science' (Review of In Defense of Miracles) (1999, 2005) by Richard Carrier

The problems with J.P. Moreland's defense of a 'scientific' theism in the book In Defense of Miracles are examined. This brings up relevant issues of how science is done, and involves a defense of compatibilism against Christian notions of 'libertarian free will.'

Nash on Naturalism v. Christian Theism (Review of In Defense of Miracles) (1999) by Richard Carrier

The problems with Ronald Nash's defense of Christian theism over naturalism in the book In Defense of Miracles are examined, which includes discussion of what naturalists "must" believe and why they really believe what they do, and why the Argument from Reason (and the similar Transcendental Argument) does not refute naturalism.

Review of Naturalism: A Critical Analysis (2000) by Graham Oppy

The editors of this collection claim that its essays aim to: (1) show that naturalism "fails to deal adequately with a number of desiderata"; (2) establish that a "consistent" naturalism must be a strong form of reductive physicalism; and (3) showcase "the contemporary resurgence of philosophical theism." While the volume clearly accomplishes the third objective, it doesn't get anywhere near accomplishing either of the other objectives.

Review of Reason for the Hope Within (2005) by Graham Oppy

The anthology Reason for the Hope Within aims to mount a broad defense of the Christian faith, in part by explaining how it can be reasonable for Christians to accept puzzling or paradoxical Christian doctrines, and in part by persuading nonbelievers that all of the core claims of Christianity are true. Oppy explains why he thinks that the book utterly fails to accomplish one of these aims, and thus fails to do much to advance the standing of Christian apologetics. Along the way, Oppy argues that science adopts methodological naturalism because metaphysical naturalism is probably true.


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