A number of years ago, Douglas Harper moved to northern New York to teach in a small college. Upon his arrival there his department chairman noted his eight-year-old Saab and said, "You'll be meeting Willie." Haper spent the next years establishing not only a working relationship but a friendship with Willie. In Working Knowledge, he introduces us to Willie, a mechanic and jack-of-all-trades. With this engaging and insightful profile--part...