 Some physicalists respond that knowing what it is like is know-how and nothing more. Mary acquires certain abilities, specifically in the case of red, the ability to recognize red things by sight alone, the ability to imagine a red expanse, the ability to remember the experience of red. She does not come to know any new information, any new facts about color, any new qualities. This is the view of David Lewis (1990) and Lawrence Nemirow (1990).