Abstract
This paper is a non-technical paper on the kinematics of rational decision-making. lt focuses upon Williams’s Regret argument. The Argument is directed against injunction implicit in standard decision theory and formulated by Rawls: a rational agent is always ready to act so that she need never blame herself “no matter how things finally transpire”. The purpose of this paper is to offer new insights into theweaknesses of the Argument, introducing new considerations regarding coherence of the self of the would-be repentant. The opaqueness of one’s future preference-structure is argued at length, stressing that standard decision theory cannot possibly allow that the decision tree is not comprehended at the time of making one’s choice, even if it is about one’s final end.