Mary's room (also known as Mary the super-scientist) is a philosophical thought experiment propose by Frank Jackson in his article "Epiphenomenal Qualia" (1982) and extended in "What Mary Didn't Know" (1986). The argument it is intended to motivate is often called the Knowledge Argument against physicalism—the view that the universe, including all that is mental, is entirely physical. The debate that emerged following its publication recently became the subject of an edited volume—There's Something About Mary (2004)—which includes replies from such philosophers as Daniel Dennett, David Lewis, and Paul Churchland.