 It appears then that there is no difficulty in holding both that Mary comes to know some new things upon her release, while already knowing all the pertinent real-world physical facts, even though the new experiences she undergoes and their introspectible qualities are wholly physical. In an ordinary, everyday sense, Mary’s knowledge increases. And that, it may be contended, is all the physicalist needs to answer the Knowledge Argument. (The term ‘fact’, it should be mentioned, is itself ambiguous. Sometimes it is used to pick out real-world states of affairs alone; sometimes it is used for such states of affairs under certain conceptualizations. When we speak of the physical facts above, we should be taken to refer either to physical states of affairs alone or to those states of affairs under purely physical conceptualizations. For more on ‘fact’, see Tye 1995.)