There's a certain type of book structure that always makes me wonder if the work has its origins in the author's doctoral thesis. (I mean, in the specific subject matter and organization, not simply in the themes.) I have no idea whether that's the case for Dinshaw's Getting Medieval, but it has the earmarks that raise that suspicion: a group of highly focused discussions of specific works, people, or events, tied together by--and featuring a conclusion referencing--an overall theme that operates at a tangent to the objective content of the material.