Conversation so far:
When did Roberto Mangabeira Unger's academic career begin?
The beginning of Roberto Mangabeira Unger's academic career began with the books Knowledge and Politics and Law in Modern Society, published in 1975 and 1976 respectively.
What year did Roberto Mangabeira Unger's academic career beginnings happen?
Did the books, Knowledge and Politics and Law in Modern Society help Roberto Mangabeira Unger's career?
The books, Knowledge and Politics and Law in Modern Society led to the co-founding of Critical Legal Studies with Duncan Kennedy and Morton Horwitz.
What happened next in Roberto Mangabeira Unger's career after the publications of the books, Knowledge and Politics and Law in Modern Society?
Throughout much of the 1980s, Unger worked on his magnum opus, Politics: A Work In Constructive Social Theory

Question: What kind of book was this?
Self-contained rewrite: What kind of book was Unger's Politics: A Work In Constructive Social Theory?