Describe Jackson's thought experiment about Mary and the black-and-white room.Explain Jackson's argument, boiled down to its premises. Introduce "qualia" and epiphenomenalism, as Jackson meant it, and show that if the statement is true, then physicalism is indeed refuted.Objection: Discuss the Acquaintance Hypothesis and how it undermines Jackson's argument.All good, but the main objection comes from Dennett: If Mary REALLY knew everything before her release, then there truly is nothing new she could learn. She should know exactly what to expect when seeing red etc.Analogy: ancient Greeks and irrational numbers. They were wrong, and Jackson is wrong.