Yavuz Dağ

Debates in the history of the philosophy of religion are often shaped around specific arguments that are isolated from one another. While theistic literature focuses on cosmological evidence and fine-tuning, naturalistic objections are mostly based on the problem of evil and evolutionary history. This fragmented approach has created an unproductive methodological ground where parties interpret each other's arguments in their weakest forms (Strawman). But can a test be constructed that is free from epistemological biases and based on the objective framework of mathematics and probability? The aim of this article is to subject the ontological conflict between Theism (T) and Naturalism (N) to a systematic analysis within the framework of Bayesian cumulative probability. However, this test differs from classical naturalist arguments in one fundamental way: Steelmanning (Strongest Interpretation). For the rational limits of a hypothesis to be fully measured, it must be tested in its strongest and most advantageous form. In this article, the ontological complexity of theism was tested by accepting it with the assumption of "divine simplicity," tolerating its cosmological explanations, and allowing ample space for the major "ad hoc" (theory salvage) strategies in the history of philosophy. As a consequence of this methodological generosity, Naturalism (N) was assigned a complexity score of 4 at the beginning of the Bayes equation, while Theism (T) was given only 1, and the model was started with a 4x (4/1) prior probability advantage in favor of Theism. If Theism, despite these theoretical privileges granted to it and the probability advantages withheld from its opponent, still produces a low statistical result when compared with the data of the empirical world (biology, psychology, history, and cosmology), this indicates that Theism has reached its structural limits as an explanatory hypothesis. This cumulative model, consisting of 11 independent factors, offers a framework in which metaphysical claims are objectively confronted with empirical data.

Recent cumulative arguments in the philosophy of religion have utilized Bayes’ theorem to argue that multiple independent pieces of evidence can collectively render Theism probable. This paper adopts the same Bayesian framework but applies it to Naturalism, introducing a methodology we term ”Hyper-Conservative Cumulative Naturalism.” By assigning equal prior probabilities to both Theism and Naturalism (P(N) = P(T) = 0.5) and granting generous epistemic multipliers to Theism in core ontological domains, we demonstrate a mathematical paradox: Even if Naturalism holds only a microscopic explanatory advantage across various independent empirical domains, the exponential growth of these minimal multipliers leads to the epistemic collapse of Theism.

This paper presents a formal Bayesian analysis evaluating the probability of three major metaphysical hypotheses: Atheism, Deism, and Theism. The evaluation is grounded in an epistemological framework where cumulative subjectivity pragmatically approximates normativity. Adopting the baseline position of a Negative Atheist, prior probabilities are assigned based on a strictly linear application of the principle of parsimony (Ockham’s Razor). Subsequently, 26 major arguments from the philosophy of religion are analyzed. By assigning specific likelihoods to each hypothesis across these arguments—where the sum of the assignments for each argument strictly equals 1.0—and calculating the normalized posterior probabilities, the model determines the most mathematically and philosophically consistent worldview.

This paper argues that the God hypothesis is not merely unnecessary but theoretically problematic and ontologically costly. By examining the structure of reality through internal tension, cumulative dynamics, and the Principle of Sufficient Reason (PSR), we suggest that certain forms of classical theism face serious explanatory challenges. Drawing upon the concept of ”Universal Acid” and the history of scientific unification, we argue that if a transcendent, immutable God existed, empirical reality might be expected to exhibit more static features. However, evidence from thermodynamics, evolutionary biology, and quantum cosmology instead supports a fundamentally dynamic, self-organizing universe. The God hypothesis thus appears as an ontologically expensive and explanatorily unstable theoretical posit.

J.L. Mackie’s logical problem of evil is widely considered addressed by Alvin Plantinga’s Free Will Defense (FWD). Plantinga’s defense heavily relies on the logical possibility of libertarian free will. This paper argues that Plantinga’s defense faces a significant metaphysical tension when situated within Classical Theism. By formulating a deductive argument utilizing modal logic and the Principle of Sufficient Reason (PSR), I demonstrate that the core attributes of the Classical Theist God—namely, absolute immutability and perfect rationality—create a strong tendency toward a modal tension. A necessarily static and rational cause appears to entail a deterministic universe. Consequently, libertarian free will is shown to be difficult to reconcile ontologically with this framework, thereby posing a profound challenge to Plantinga’s FWD and revisiting the logical problem of evil.

Before undertaking an exploratory critique of the foundational arguments in the philosophy of religion, it is necessary to establish a consistent logical framework. This paper introduces the Argument Power Test (APT), a metaphilosophical heuristic designed to evaluate the entire spectrum of philosophical arguments regarding God, encompassing both theistic and atheistic paradigms. Moving away from continuous mathematical metrics, this methodology relies strictly on formal first-order and modal logic. By establishing three core axioms—Modal Necessity, Explanatory Parity, and Epistemic Parsimony—we provide a binary filtration system to evaluate whether any argument can successfully bridge the gap between internal logical validity and the external objective world without collapsing under the weight of excessive assumptions.

This paper presents a cumulative Bayesian analysis comparing the explanatory power of Theism (T) and Naturalism (N). Drawing upon the methodological frameworks of Swinburne and Oppy, the study evaluates a comprehensive set of arguments, including cosmological and teleological arguments, the problem of evil, divine hiddenness, and arguments concerning logical coherence. By assigning epistemic probability ranges to each evidential factor, the posterior probabilities of the competing hypotheses are calculated under lower-bound, upperbound, and average scenarios. The results indicate that while Theism receives significant support from fine-tuning and consciousness, the cumulative weight of existential and logical defeaters—specifically the problem of evil, divine hiddenness, and modal collapse—renders Naturalism the dominant hypothesis with a probability exceeding 89% in the realistic average scenario.

Background: A fundamental tension exists between Rational Choice Theory (which predicts rapid optimization) and Sociological Theory (which predicts inertia and lag). Standard Evolutionary Game Theory models adoption as a linear function of utility, failing to account for ”Threshold Behavior” observed in social change. Method: We perform a formal synthesis of the standard Replicator Dynamic Equation and the Time-Dependent Agency model proposed by Da˘g (2026). By scaling the micro-level ontogenetic parameters to the macro-level, we derive a ”Sigmoidal Inertia Equation.” Results: We demonstrate that cultural plasticity is not linear but logistic. The adoption of a new norm requires the utility gap (∆π) to exceed a specific ”Social Activation Energy.” Conclusion: This framework mathematically resolves four historical anomalies: Ogburn’s Cultural Lag, Granovetter’s Tipping Points, Pluralistic Ignorance, and Institutional Path Dependence.

Classical logic, rooted in the Aristotelian axiom of Identity (A = A) and Leibnizian Principle of Indiscernibles, represents a "frozen" abstraction of reality that implies zero entropic tension. This paper rejects this "static fallacy." Synthesizing the dialectical materialism of Engels with the process philosophy of Whitehead, Schelling, and Deleuze, I argue that tension (metabolic cost) scales inversely with stability but never vanishes. The transition between states involves a "Macro-Visual Contradiction Cloud", a thermodynamic singularity where tension is infinite. Crucially, unlike standard dialetheism which treats contradiction as a semantic property, I argue that this Cloud is phenomenologically unobservable (Noumenal/The Real); the act of observation collapses the tension. Thus, ontological contradiction is physically real but phenomenologically inaccessible, existing only as an unobservable thermodynamic singularity that logic can asymptotically approach but never inhabit. I propose "Thermodynamic-Dialectical Logic" (TDL) not as a calculus of inference, but as a formal ontology that grounds logic in the physical laws of energy dissipation.

Alvin Plantinga’s Evolutionary Argument Against Naturalism (EAAN) posits that the probability of our cognitive faculties being reliable (R) is low or inscrutable given naturalism and evolution (N&E). Critics argue that adaptive behavior does not necessitate true beliefs. In this paper, I address this challenge by introducing a Deflationary Asymptotic Model within the framework of the Ontogenetic Synthesis (Dağ, 2026a,b). By redefining ”Truth” not as a metaphysical correspondence but as a thermodynamic equilibrium state (A), I argue that complex cognitive sys tems are constrained to minimize metabolic cost by reducing the vector difference between internal models and environmental signals. While absolute truth remains structurally inaccessible (the asymptote), the algebraic rate of change (∆Ct) drives the belief state (Ct) to converge arbitrarily close to A as agency (w) increases. Thus, natural selection does not select for ”Truth” per se, but for ”Energy-Efficient Struc tural Alignment,” which is functionally indistinguishable from reliability in mature agents.

Traditional historiography often analyzes regime stability through qualitative narratives, leading to retrospective descriptions rather than predictive mechanics. This paper proposes a formal systems-theoretic framework aligned with the goals of Cliodynamics, based on the Ontogenetic Principle of Cultural Dynamics (Dağ, 2026a). We model political evolution as a discrete-time optimization problem under constraints using the equation Ct+1 = e ^−KCt + (1 − e ^−K)A⃗. By defining Institutional Conductivity (K) and Adaptive Targets (A⃗) as operational variables, we analyze three distinct system states: (1) Systemic Decoherence (e.g., Soviet Collapse); (2) Mass-Interaction Scaling (e.g., China); and (3) Vectorial Cancellation (e.g., High-Friction Democracies). We emphasize that this model is a first-order heuristic framework designed to generate structural hypotheses regarding the thermodynamic limits of cultural adaptation.

Background: Irritable Bowel Syndrome (IBS) remains a diagnosis of exclusion with no consensus on its ultimate evolutionary cause. Current treatments focus on symptom suppression rather than correcting the underlying regulatory logic. Hypothesis: This paper proposes the Thrifty Gut Hypothesis, a theoretical framework reframing IBS not as a defect, but as a manifestation of evolved energy management control policies driven by the "Selfish Brain." Moving beyond proximate pathological descriptions, I suggest that IBS phenotypes represent prioritized resource allocation strategies: IBS-C (constipation) minimizes metabolic variance via adaptive stasis, while IBS-D (diarrhea) represents a defense-biased regulatory response. Implications: By synthesizing data from postprandial hemodynamics and predictive processing, I posit that IBS represents a heuristic mismatch—where ancient regulatory biases optimized for scarcity and stochasticity become maladaptive in modern abundance. Crucially, this framework suggests that "hijacking" the vagal baroreflex via mechanical interventions could reset these priors.

The debate between Dual Inheritance Theory (DIT) and Cultural Attractor Theory (CAT) often overlooks the temporal dynamics of transmission. The Ontogenetic Synthesis (Dağ, 2026) proposes that human agency is time-dependent. In this study, we operationalize this framework through a discrete-time asymptotic model (M0). We introduce "Cultural Conductivity" (K) not as a direct neurological measure, but as a phenomenological proxy for the rate of adaptation. We apply this model to longitudinal IT usage trends (TÜİK, 2024) and normative data (Haerpfer et al., 2024). While the high fit (R2 > 0.98) is expected in cumulative diffusion models, the distinct fracture in conductivity parameters between cohorts (Fr ≈ 3.74) suggests that ontogenetic constraints provide a consistent algebraic framing for the divergence in adaptive trajectories.

The mechanisms of cultural transmission have long been debated between two dominant frameworks: Dual Inheritance Theory (DIT) and Cultural Attractor Theory (CAT). This paper articulates the Ontogenetic Synthesis, a comprehensive framework positing that these mechanisms operate sequentially within the human life history. Central to this synthesis is the Ontogenetic Principle of Cultural Dynamics (OPCD). Using a formal derivation based on linear response approximations, we demonstrate that DIT and CAT can be understood not as competing alternatives, but as limiting cases of a continuous ontogenetic parameterization governed by the maturation of agentic control.

Current literature on cultural evolution is often polarized between Darwinian selection (Memetics) and Lamarckian guided variation. This paper proposes the Ontogenetic Principle of Cultural Dynamics (OPCD) as a unifying theoretical framework to bridge this divide. I argue that these two models are not mutually exclusive but operate sequentially based on the cognitive maturity of the agent. The hypothesis posits that cultural transmission in childhood functionally resembles “Passive Memetic Replication” (High-Fidelity), whereas adulthood shifts towards “Lamarckian-like Knowledge Evolution” (Reconstructive). Furthermore, this study clarifies the terminology: while aligned with the concept of Guided Variation, we retain the term “Functionally Lamarckian” to emphasize the computational shift from ‘read-only’ access to ‘write-access’ regarding cultural information streams. The framework is supported by a stochastic hybrid model and computational illustration detailed in the Appendix.