Convergence to the truth and nothing but the truth
Philosophy of Science 56 (2):185-220 (1989)
| Abstract | One construal of convergent realism is that for each clear question, scientific inquiry eventually answers it. In this paper we adapt the techniques of formal learning theory to determine in a precise manner the circumstances under which this ideal is achievable. In particular, we define two criteria of convergence to the truth on the basis of evidence. The first, which we call EA convergence, demands that the theorist converge to the complete truth "all at once". The second, which we call AE convergence, demands only that for every sentence in the theorist's language, there is a time at which the theorist settles the status of the sentence. The relative difficulties of these criteria are compared for effective and ineffective agents. We then examine in detail how the enrichment of an agent's hypothesis language makes the task of converging to the truth more difficult. In particular, we parametrize first-order languages by predicate and function symbol arity, presence or absence of identity, and quantifier prefix complexity. For nearly each choice of values of these parameters, we determine the senses in which effective and ineffective agents can converge to the complete truth on an arbitrary structure for the language. Finally, we sketch directions in which our learning theoretic setting can be generalized or made more realistic | |||||||||
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Hannes Leitgeb (2005). What Truth Depends On. Journal of Philosophical Logic 34 (2):155-192.
Dale Jacquette (2010). Circularity or Lacunae in Tarski's Truth-Schemata. Journal of Logic, Language and Information 19 (3).
Donald Davidson (1994). What is Quine's View of Truth? Inquiry 37 (4):437 – 440.
Alexandru Baltag & Sonja Smets (2011). Keep Changing Your Beliefs, Aiming for the Truth. Erkenntnis 75 (2):255-270.
Panu Raatikainen (2000). The Concept of Truth in a Finite Universe. Journal of Philosophical Logic 29 (6):617-633.
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