The Is-Ought Problem, the Open Question Argument, and the new science of morality

Abstract

Abstract The article deals with a recent attack by Sam Harris on two famous arguments that purport to establish a gap between factual and evaluative statements—Hume’s Is-Ought Problem and Moore’s Open Question Argument. I present the arguments, analyze the relationship between them and critically assess Harris’ attempt to refute them. I conclude that Harris’ attempt fails.