Is Discounting for Tense Rational?

Abstract

Social science and philosophy appear to disagree on when or if temporal discounting is rational. Discounting the distant future in favor of the near future is judged irrational by philosophers and as often rational by social scientists. Discounting the past in favor of the future, by contrast, is viewed as rational by some philosophers and as (probably) irrational by social scientists. Are the two fields really in disagreement? With the goal of bridging this divide, the chapter focuses on the neglected fact that both time preferences are typically tensed in nature. Through the lens of tense, we’ll see that the conflict between social science and philosophy on discounting is mostly only apparent; and where genuine, it involves disputes within each field as much as between fields. Keeping an eye on tense will allow us to make several observations that will help us better understand temporal discounting.

Temporal Neutrality Implies Exponential Temporal Discounting

“…There is an ambiguity in what temporal neutrality means by "temporal location" (Callender 2022). In what type of temporal series is location not supposed to matter?…”