 The examples of thick and thin terms and concepts with which we began exhibit an intuitive contrast: terms like generous, cruel, and tactful appear descriptively more specific or rich in content than terms such as wrong or good, which seem more general or more purely evaluative. Even if calling something selfish evaluates it as bad in some way or respect, not just any bad act can count as selfish; it must also involve the agent giving some significant degree of priority to herself over others. How this intuitive contrast is best understood is subject to several controversies and may have no theory-neutral answer.