Ergo there is more to have than that, and Physicalism is false " (Jackson 25-26). Jackson knew that since physically knowing everything about what the rest of the human race sees is not the same as experiencing it, Mary had to be surprised. Through his experiment, Jackson concludes that there is no way Mary will not acquire new information after this incredible experience. Despite having all of the physical knowledge of brain and color stimuli before the first time she left her laboratory, Mary learned information she had not known through the experience. This argument can prove that the knowledge obtained through experience and physical learning, are two completely different feels of information. The knowledge argument therefore rightfully can be said to invalidate Physicalism, however, there are some who repudiate Frank Jackson's logic, such as philosopher Daniel Dennett.
In his writing, What RoboMary Knows, Daniel Dennett's thought experiment, RoboMary, was a response to Frank Jackson's thought experiment against Physicalism. Dennett argues that Mary would not, in fact, learn something new if she left her black and white laboratory to experience color. In order to defend his claim, Dennett presents us RoboMary: "RoboMary is a standard Mark 19 robot, except that she was brought on line without color vision; her video cameras are black and white, but everything else in her hardware is equipped for color vision, which is standard in the Mark 19 " (Dennett 94). While she has the software that enables her to see color, RoboMary has built in black and white camera lenses. This means she sees black and white at all times, that is until her colored lenses come into mail. Dennett simulates the same experiment with RoboMary as Jackson had done with Mary, and theorizes that once RoboMary gains her colored lenses, she will not be surprised by her new color experience whatsoever. In the amount of time she must wait for her colored lenses to arrive, RoboMary learns everything about Mark 19's color vision, million-shade color-coding system, and the differences in internal and external responses to what the other Mark 19's colored vision sees compared to what she sees.