[Synthese] All Rationality Is Bounded

Year and volume: 2026 (Vol. 207).

Author(s): Gregory Wheeler.

Abstract: Bounded rationality is typically understood as a concession to human cognitive limitations, a departure from an ideal coherent in principle if unattainable in practice. I argue this gets the relationship backwards. Unbounded rationality is a physical impossibility, and its attendant normative standards—Bayesian updating, sure loss avoidance, expected utility maximization, logical closure—are techniques for favorable circumstances when resources permit, not ideals from which mortals regrettably fall short. The argument rests on the physics of computation: any information-processing system incurs irreducible costs in energy and time. Three independent lines of support establish this conclusion. The first runs through Landauer’s principle. The second draws on Wolpert’s stochastic thermodynamics framework, extended by Kolchinsky and Wolpert to Turing machines, where thermodynamic costs track algorithmic complexity. The third draws on quantum-mechanical and relativistic bounds that fix finite ceilings on the operations any physical system can perform in a given region of space and time. These constraints bind all physical systems, natural or artificial. Coherence conditions like Savage’s axioms and Bayesian probability evaluate global states, not local procedures. No finite physical process can construct, verify, or maintain global coherence over a realistic state space. They can still function diagnostically, as devices for flagging departures worth explaining; what they cannot do is serve as action-guiding norms from which bounded reasoners fall short. Normative theories that presuppose unbounded rationality demand the physically impossible. Bounded rationality is not a departure from ideal rationality. It is the only kind there is.

Doi: https://doi.org/10.1007/s11229-026-05625-7

[Argumentation] On the Differences Between Practical and Cognitive Presumptions

Year and volume: 2021 (Vol. 35).

Author(s): Petar Bodlović.

Abstract: The study of presumptions has intensified in argumentation theory over the last years. Although scholars put forward different accounts, they mostly agree that presumptions can be studied in deliberative and epistemic contexts, have distinct contextual functions (guiding decisions vs. acquiring information), and promote different kinds of goals (non-epistemic vs. epistemic). Accordingly, there are “practical” and “cognitive” presumptions. In this paper, I show that the differences between practical and cognitive presumptions go far beyond contextual considerations. The central aim is to explore Nicholas Rescher’s contention that both types of presumptions have a closely analogous pragmatic function, i.e., that practical and cognitive presumptions are made to avoid greater harm in circumstances of epistemic uncertainty. By comparing schemes of practical and cognitive reasoning, I show that Rescher’s contention requires qualifications. Moreover, not only do practical and cognitive presumptions have distinct pragmatic functions, but they also perform different dialogical functions (enabling progress vs. preventing regress) and, in some circumstances, cannot be defeated by the same kinds of evidence. Hence, I conclude that the two classes of presumptions merit distinct treatment in argumentation theory.

Doi: https://doi.org/10.1007/s10503-020-09536-w

[Synthese] More Than a Method? Reflective Equilibrium and the Structure of Philosophical Inquiry.

Year and volume: 2026 (Vol. 207).

Author(s): Tanja Rechnitzer.

Abstract: Reflective Equilibrium (RE) is often cited as an influential philosophical method but faces a range of objections, including that it is overly demanding, vacuous, or methodologically irrelevant. This paper identifies a fundamental issue that complicates both the evaluation of RE and broader discussions of philosophical methodology: the lack of clarity about what constitutes a method in philosophy, what we expect from such a method, and what kinds of objections against it are legitimate. By distinguishing between epistemology, methodology, and method, I identify three levels at which RE might be located. The term ‘reflective equilibrium’ is often used to encompass all three, obscuring important differences. I argue that while RE can be conceptualized at each level, for guiding philosophical inquiry, it is most plausible and fruitful to understand it primarily as a methodology rather than a method. Beyond debates about RE, the proposed tripartite distinction may also serve as a helpful framework for reflecting more systematically on how epistemological assumptions, methodological commitments, and the use of methods interact in philosophical inquiry.

Doi: https://doi.org/10.1007/s11229-026-05612-y

[AI and Ethics] Guidelines without Guidance: Underdetermination in AI Ethics

Year and volume: 2026 (Vol. 6).

Author(s): Raphael Max.

Abstract: AI ethics has become a global industry of principles. Across governments, intergovernmental bodies, research institutes, and firms, guideline documents repeatedly endorse fairness, transparency, accountability, privacy, and human dignity. Yet convergence on labels is often mistaken for convergence on normative content. This paper argues that much of the current discourse remains normatively influential while being insufficiently action-guiding. It develops two claims. First, normative concepts are genuinely useful only when they are determinate enough to support critique: they must specify what would count as satisfying them and what would count as failing them, and they must confront trade-offs rather than implying a moral free lunch in which all values can be maximized simultaneously. Second, even conceptually clear normativity is incomplete if it treats implementation as an afterthought. Normative claims about sociotechnical systems implicitly rely on assumptions about feasibility, institutional incentives, measurement, and human response. When these background assumptions remain unspecified or idealized, ethical guidance becomes aspirational and can even be normatively irresponsible. The paper therefore articulates minimal conditions for AI-ethical discourse that is criticizable and responsibly connected to implementation, without reducing ethics to technocracy or compliance checklists.

Doi: https://doi.org/10.1007/s43681-026-01188-y

[Topoi] On Technological Bullshit

Year and volume: 2026.

Author(s): Mandi Astola; Eugen Popa.

Abstract: The concept of “bullshit” (Frankfurt H (1986) On Bullshit. Raritan.) is a well-established philosophical tool for criticizing speech that lacks a serious relationship to truth conditions or evidence. While the concept has been employed primarily to evaluate discourse, we argue in this paper that bullshit is also relevant to the assessment of technology. We introduce the concept of technological bullshit as a means of critically reflecting on artifacts and their societal construction. As a case in point for the analysis of technological bullshit, we focus on a two-wheeler that has caused some recent controversy in the field of urban mobility: the fatbike. We illustrate the identification and analysis of technological bullshit by offering a case study on the pragmatics of fatbikes, i.e., how they are made, used, and talked about. Based on this, and some additional examples, we finally characterize different forms of technological bullshit and conclude with a note on how technological bullshit can be used as a form of critique.

Doi: https://doi.org/10.1007/s11245-026-10425-2

[Synthese] All Rationality Is Bounded

Year and volume: 2026 (Vol. 207).

Author(s): Gregory Wheeler.

Abstract: Bounded rationality is typically understood as a concession to human cognitive limitations, a departure from an ideal coherent in principle if unattainable in practice. I argue this gets the relationship backwards. Unbounded rationality is a physical impossibility, and its attendant normative standards—Bayesian updating, sure loss avoidance, expected utility maximization, logical closure—are techniques for favorable circumstances when resources permit, not ideals from which mortals regrettably fall short. The argument rests on the physics of computation: any information-processing system incurs irreducible costs in energy and time. Three independent lines of support establish this conclusion. The first runs through Landauer’s principle. The second draws on Wolpert’s stochastic thermodynamics framework, extended by Kolchinsky and Wolpert to Turing machines, where thermodynamic costs track algorithmic complexity. The third draws on quantum-mechanical and relativistic bounds that fix finite ceilings on the operations any physical system can perform in a given region of space and time. These constraints bind all physical systems, natural or artificial. Coherence conditions like Savage’s axioms and Bayesian probability evaluate global states, not local procedures. No finite physical process can construct, verify, or maintain global coherence over a realistic state space. They can still function diagnostically, as devices for flagging departures worth explaining; what they cannot do is serve as action-guiding norms from which bounded reasoners fall short. Normative theories that presuppose unbounded rationality demand the physically impossible. Bounded rationality is not a departure from ideal rationality. It is the only kind there is.

Doi: https://doi.org/10.1007/s11229-026-05625-7

[Argumentation] Reconstructing Resistance: Pragmatic Argumentation Against Scientific Metaphor

Year and volume: 2025.

Author(s): Andreas Bilstrup Finsen; Jean Wagemans.

Abstract: Metaphors abound in scientific discourse. Well-known examples include ‘the brain as a computer’ and ‘the organism as a machine’. Such metaphors, we argue, have both a theoretical and a practical aspect: they may serve as explanatory models, but also guide technological development, influence policy, reflect ideological assumptions, and reshape how we understand ourselves. These practical dimensions have prompted growing concern about the risks associated with metaphor use in science. While this concern has been widely noted, less attention has been paid to the argumentative forms such criticism may take. This article addresses that gap by reconstructing resistance to scientific metaphors—specifically computer and machine metaphors—as a form of pragmatic argumentation, in which metaphor use is challenged on the basis of its practical consequences. It further shows how such argumentation may be supported by subordinate causal arguments that appeal to the metaphor’s highlighting/hiding structure. Drawing on the pragma-dialectical theory of argumentation, and analyzing examples from cognitive science, philosophy, and bioethics, the article demonstrates how metaphor resistance can be understood as a reconstructable form of argumentative critique—one in which metaphors become sites of normative contestation.

Doi: https://doi.org/10.1007/s10503-025-09675-y

[Erkenntnis] A Notion of Relevance for Rational Decision Making

Year and volume: 2026 (Vol. 91).

Author(s): Malvina Ongaro.

Abstract: Decision theories have largely ignored the step of decision making in which the agent models the situation. Given that a decision can be represented with different models, and that these can lead to different recommendations, then without a principled way to assess them the agent’s choice is under-determined. As models require the agent to select the aspects that matter to the decision, an account of rational decision modelling must include a notion of relevance. I propose that the most rational model is the one taking into account all and only the considerations relevant for the decision. I define relevance for a decision as a matter of providing reasons for some option, and I identify four functional types of reasons leading to four corresponding types of relevance. I focus on what I call “constitutive relevance”, which provides the content of the decision model, and propose a formal definition of this concept: the central idea is that the model should include all and only those considerations the inclusion of which changes the utility of at least one of the alternative options.

Doi: https://doi.org/10.1007/s10670-025-00964-2

[American Philosophical Quarterly] A Capability Approach to AI Ethics

Year and volume: 2025 (Vol.62).

Author(s): Emanuele Ratti; Mark Graves.

Abstract: We propose a conceptualization and implementation of AI ethics via the capability approach. We aim to show that conceptualizing AI ethics through the capability approach has two main advantages for AI ethics as a discipline. First, it helps clarify the ethical dimension of AI tools. Second, it provides guidance to implementing ethical considerations within the design of AI tools. We illustrate these advantages in the context of AI tools in medicine, by showing how ethics-based auditing of AI tools in medicine can greatly benefit from our capability-based approach.

Doi: https://doi.org/10.5406/21521123.62.1.01