بررسی و نقد دیدگاه پل دِرِیپِر در مسئلۀ شر 

Abstract
Paul Draper is one of the most sophisticated contemporary defenders of the evidential argument from evil. In his seminal 1989 paper “Pain and Pleasure: An Evidential Problem for Theists,” he argues that the observed distribution and intensity of suffering in the world provide strong evidence against classical theism. Using a Bayesian framework, Draper compares theism (T) with the Hypothesis of Indifference (HI) and contends that the data of pain and pleasure (O) are far more probable under HI than under T. This article offers a detailed analytical-critical examination of Draper’s argument, focusing on its conceptual foundations, probabilistic methodology, and epistemological presuppositions. After reconstructing the key elements—including gratuitous evil, prior probability, and explanatory power—the study presents several interlocking critiques: the epistemic limits of human cognition in identifying truly pointless evil (skeptical theism), the subjectivity of assigning prior probabilities, the underestimation of traditional theodicies (free-will and soul-making), and anthropomorphic assumptions about divine purposes.The analysis concludes that, while Draper’s formulation poses a formidable challenge to theism, it rests on contestable epistemological and methodological assumptions that significantly weaken its force. Thus, despite its influence, the argument does not constitute a decisive refutation of theistic belief.

Keywords
Paul Draper, evidential argument from evil, gratuitous evil, skeptical theism, theodicy, hypothesis of indifference, philosophy of religion
 

Introduction
The problem of evil remains the most persistent challenge to classical theism. While logical versions of the argument have largely been answered by Plantingian free-will defenses, evidential or probabilistic formulations continue to command attention. Among these, Paul Draper’s 1989 argument stands out for its clarity, use of Bayesian reasoning, and shift of focus from isolated instances of horror to the overall pattern of suffering and pleasure. This extended abstract reconstructs Draper’s position and subjects it to sustained critical scrutiny, revealing both its strengths and its significant philosophical vulnerabilities.
Draper’s Evidential Argument: Structure and Key Concepts
Draper frames the debate as a competition between two hypotheses. Theism (T) asserts that an omnipotent, omniscient, and perfectly good God created the world. The Hypothesis of Indifference (HI) states that, if supernatural beings exist, they are indifferent to the pain and pleasure of sentient creatures. The relevant evidence (O) consists of the vast quantities of intense suffering and the biological character of pain and pleasure, which appear geared toward survival rather than moral or spiritual ends.
Using Bayes’ theorem, Draper contends that P(O | HI) is significantly higher than P(O | T). Because the observed distribution of suffering is precisely what one would expect under indifference but surprising under theism, the evidence strongly favors HI over T. Central to the argument is the concept of gratuitous (pointless) evil—suffering that serves no greater good and could have been prevented without losing any compensating benefit. Draper maintains that the world contains massive amounts of such evil, which theism should not permit.
Epistemological, Conceptual, and Methodological Weaknesses
Despite its elegance, Draper’s argument faces formidable objections on several fronts.
First, the very identification of gratuitous evil presupposes an epistemic capacity that skeptical theists deny. Human cognitive limitations (“cognitive distance”) mean we are poorly positioned to judge whether any particular instance of suffering is truly pointless. As Wykstra and Alston have argued, the absence of a discernible reason is not evidence of the absence of a reason; God’s purposes may simply lie beyond our ken. Draper’s reliance on the appearance of pointlessness therefore begs the question against skeptical theism.
Second, the Bayesian component introduces unavoidable subjectivity. Assigning prior probabilities P(T) and P(HI), as well as the likelihoods P(O | T) and P(O | HI), depends heavily on one’s antecedent worldview. A committed naturalist will naturally rate P(O | HI) highly, while a theist who already accepts other theistic arguments (cosmological, fine-tuning, moral) will assign a much higher prior to T. This renders the argument less a neutral piece of evidence than a reflection of prior commitments, risking circularity.
Third, Draper underestimates the resources of traditional theodicies. The free-will defense can account for moral evil, while the soul-making theodicy explains much natural suffering as necessary for character formation. Even apparently gratuitous evils (animal suffering, infant death) may play indirect roles in a larger providential order. Draper’s dismissal of these responses often rests on the assumption that divine goodness must conform to a narrowly utilitarian calculus—an assumption that critics label anthropomorphic.
Finally, by concentrating almost exclusively on pain and pleasure, Draper brackets other significant data—cosmic fine-tuning, the existence of consciousness, objective moral values, and religious experience—that many theists regard as positive evidence for theism. A comprehensive Bayesian assessment must weigh all relevant evidence, not merely the negative data of suffering.
Conclusion
Paul Draper’s evidential argument from evil is a sophisticated and influential challenge to theism, skillfully shifting the debate onto probabilistic terrain. Nevertheless, the argument is undermined by serious epistemological, conceptual, and methodological difficulties. The inability of finite minds to certify gratuitous evil, the unavoidable subjectivity of Bayesian priors, the underestimation of theodicies, and the selective focus on suffering all weaken its force. While Draper rightly highlights a serious evidential cost that theism must bear, he does not succeed in showing that this cost is decisive. The data of evil remain compatible with the existence of a perfectly good, omnipotent, and omniscient God whose purposes may legitimately transcend human comprehension. Future work in philosophy of religion should therefore integrate Draper’s insights with a more comprehensive evidential balance sheet and a deeper appreciation of skeptical theism.