Explicating Truth: Minimalism and Primitivism

This paper pursues two goals. The first is to show that Horwich's anti-primitivist version of minimalism must be rejected because, already for formal reasons, the truth-schema does not achieve a positive explication of any property of propositions. The second goal is to develop a more moderate primitivist version of minimalism according to which the truth-schema is admittedly powerless to underpin truth with something more basic but it still succeeds in giving a complete account of the necessary and sufficient conditions for a proposition to be true. This revised version was published online in August 2006 with corrections to the Cover Date.     

Models of Success Versus the Success of Models: Reliability without Truth

In computer simulations of physical systems, the construction of models is guided, but not determined, by theory. At the same time simulations models are often constructed precisely because data are sparse. They are meant to replace experiments and observations as sources of data about the world; hence they cannot be evaluated simply by being compared to the world. So what can be the source of credibility for simulation models? I argue that the credibility of a simulation model comes not only from the credentials supplied to it by the governing theory, but also from the antecedently established credentials of the model building techniques employed by the simulationists. In other words, there are certain sorts of model building techniques which are taken, in and of themselves, to be reliable. Some of these model building techniques, moreover, incorporate what are sometimes called “falsifications.” These are contrary-to-fact principles that are included in a simulation model and whose inclusion is taken to increase the reliability of the results. The example of a falsification that I consider, called artificial viscosity, is in widespread use in computational fluid dynamics. Artificial viscosity, I argue, is a principle that is successfully and reliably used across a wide domain of fluid dynamical applications, but it does not offer even an approximately “realistic” or true account of fluids. Artificial viscosity, therefore, is a counter-example to the principle that success implies truth – a principle at the foundation of scientific realism. It is an example of reliability without truth.     

Minimalism and Paradoxes

This paper argues against minimalism about truth. It does so by way of acomparison of the theory of truth with the theory of sets, and considerationof where paradoxes may arise in each. The paper proceeds by asking twoseemingly unrelated questions. First, what is the theory of truth about?Answering this question shows that minimalism bears important similaritiesto naive set theory. Second, why is there no strengthened version ofRussell's paradox, as there is a strengthened Liar paradox? Answering thisquestion shows that like naive set theory, minimalism is unable to makeadequate progress in resolving the paradoxes, and must be replaced by adrastically different sort of theory. Such a theory, it is shown, must befundamentally non-minimalist.     

Minimalism and Truth-Value Gaps

Philosophical Studies -     

Minimalism deflated: independence without substance

The paper examines Wright’s attempt to inflate deflationism about truth. It accepts the details of Wright’s argument but contends that it should best be seen as posing a dilemma for the deflationist: either truth is independent of norms of warranted assertibility—in which case it is substantial—or it is not—in which case epistemicism about truth is a consequence. Some concerns about epistemicism are raised in avoiding the second horn. The first is avoided by distinguishing between independence and substantiality and arguing that only the first applies to truth and only the second is worrisome to deflationism. So, despite its sub-title, the following is not a diatribe against Home Rule but a modest defence of deflationism.     

Beyond Realism and Moralism: A Defense of Political Minimalism

What is the relationship between morals and politics? What is the relationship between moral philosophy and political philosophy? Defenders of political moralism postulate moral aims or constraints for politics, and hence they see political philosophy as a chapter of moral philosophy. Contrastingly, advocates of political realism describe politics as an independent endeavor aiming at providing order and security, and conceive of political philosophy as an autonomous discipline. This article claims that political moralism and political realism share the mistake of assuming that politics has substantial, permanent goals or constraints. After criticizing political substantialism, the article explains the main ingredients of its alternative, political minimalism: (1) the idea that politics, understood as collective instrumental rationality, aims at providing adequate means for the accomplishment of people's goals, whatever these are; and (2) the conception of the relationship between morality and politics as one of “reciprocal containment.” Finally, it addresses some foreseeable criticisms of political minimalism.     

Coherence and Truth: A Cognitive Model of Propositional Truth Attribution

The truth value assigned to a proposition is treated by philosophers, logicians, and most psychologists as an abstract construct, a theoretical object outside the cognitive system. Breaking away from this consensus, we propose to carry out a psychological investigation to analyse the objective, verifiable properties of representations categorized as true by human individuals. We shall reject the conception whereby attributing a truth value to a proposition is the result of the activation of knowledge about the truth of that proposition. We shall also exclude the conception of truth as the result of the establishment of a correspondence with the world. We propose that truth be understood as the result of a decision about the values taken on by the conditions for fulfilment of the act of referencing in a mental model. Our cognitive model of propositional truth attribution is built on the assumption that the truth value of a proposition is determined by the ability of that proposition to fit into the theory of the field to which it refers. This attribution is viewed as a two-stage cognitive activity. During the first stage, the features defining the coherence of the proposition in the activated mental model determine its plausibility value. This defines a generally inconsistent set of truth candidates. The second stage involves selecting the subset containing all propositions which, in context, will be considered true. Two selection criteria are used: maximum consistency and connectivity. The preliminary experimental results proved to be compatible with the proposed model.