“Surrendering to desires in the moment is rational for a mortal being in an uncertain world, as long as future moments are not discounted too steeply or shortsightedly” DesireMortalityRationalityIrrationalityDiscounting Function Book:Rationality: What It Is, Why It Seems Scarce, Why It Matters Source: Rationality: What It Is, Why It Seems Scarce, Why It Matters