Much recent philosophical literature on happiness and satisfaction is based on the belief that empirical research is relevant to philosophical conclusions. In his2010 book What is This Thing Called Happiness? Fred Feldman begs to differ. He suggests that there is no evidence that empirical research is relevant to long-standing philosophical questions; consequently, that philosophers have little reason to pay attention to the work of psychologists or economists; and that philosophers need not fear embarrassing themselves by being ignorant of important scientific (...) findings that bear directly on their work. Relying on an example invoked by Feldman himself, this paper makes the case that all three theses are false. The argument suggests a picture according to which science and philosophy stand in a symbiotic relationship, with scientists and philosophers engaging in a mutually beneficial exchange of ideas for the advancement of thegeneral knowledge. (shrink)