High Time for a Change? A Response to Callender on Rationality and Time Preferences

Abstract

Craig Callender attempts to overturn conventional wisdom within decision theory by contending that rational intertemporal choices need not always conform to an exponential discounting function. He argues that there are cases in which hyperbolic discounting is the height of rationality. This paper does not seek to undermine Callender’s conclusions, but instead raises two interrelated theoretical concerns with his way securing them. The first concern is with his dismissal of influential dual-system explanations of rationality. It is argued that Callender’s criticisms of said explanations fail to assess them at anything like their full weight. It is then suggested that dual-systems approaches in cognitive science do have substantial theoretical problems, but that Callender fails to identify them. The second concern builds on the first and suggests that Callender’s arguments against consensus normative standards might motivate a more dramatically reimagined notion of rationality than the one he seems to embrace.

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