What is the source of the woman’s information?

M: Have you ever read anything about pseudo sciences?
W: You mean fake sciences? Yes. In fact I was just reading some articles about the brain. I have been looking through some of my roommate’s science magazines and I came across an article on phrenology.
M: Phrenology, wasn’t that the pseudo science founded-by the scientist Franz Gall?
W: Yes. Gall maintained that people’s characters could be determined by the size and the shape of their skulls. For example he though that a pump in a certain place on the head means that the person had the ability of a musician.
M: Really? I wonder what phrenologists would say about the bumps on my head. Would they say I have the abilities to be a doctor, or a plumber, or a thief.
W: Well, I’m not sure exactly what the connection is between a person’s abilities and the physical characteristics of the head. But although there’s no scientific basis for phrenology, it is true that the head is the center of control for the rest of the body.
M: I guess you are right. Scientists now know that different parts of the brain control different parts of the body.
W: Yes. And I wouldn’t be surprised that the scientists one day discover that certain aspect of phrenology has scientific applications.