Knowledge: A Very Short Introduction by Jennifer Nagel My rating: 3 of 5 stars I can’t say I appreciate the very short nature of the book, contrasted with the vastness of the subject. It’s just not a good fit. The result is a book that does cover, in brief, a lot of important viewpoints on the nature of knowledge. But it is as hard to read as a dry, academic book of 500 pages because of its brevity.