Abstract

AbstractMethodological realism accepts the axiological view that truth is one of the essential aims of science. Following Popper and Levi, truthlikeness as the aim of science, combines the goals of truth and information. This chapter discusses the relations between truthlikeness and other epistemic utilities like explanatory power (Hempel), problem‐solving capacity (Laudan), and simplicity (Reichenbach). While rationality in science can be defined relative to the goals accepted within scientific communities at different times, a critical realist defines scientific progress in terms of increasing truthlikeness. It is argued that progress in this sense can be assessed, relative to empirical evidence, by the notion of expected verisimilitude. An abductive argument is formulated to defend realism as the best (and even the only) explanation of the empirical and practical success of science.

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