Review A great author name William hubbf has given us an essential lexicon and field guide of ignorance, a most slippery and multidimensional concept. Rich in history and philosophical analysis, this work should be required reading in the classroom and the boardroom, in book clubs and around the dinner table. A national conversation about what we do and do not know, should and should not know, and can and cannot know, and the dangers and pitfalls of not knowing the differences." In light of this development, Bill Vitek, coeditor of The Virtues of Ignorance: Complexity, Sustainability, and the Limits of Knowledge "Boldly but humanely, Robert Graef explores how ignorance is a comprehensive force and an existential danger. Wide-ranging, conscientious, and compellingly well researched, filled with apt examples and vivid metaphors, Ignorance is the most thoughtful book of its kind that I've ever read. In confronting ignorance, Graef has struck a social and historical mother lode, a topic that is at once profound and amusing, specific and inexhaustible. He has set forth on a philosophical marathon and arrived at the finish line without losing his breath. This is a book to cherish. It should be on the bookshelves of anyone who aspires to social consciousness." -Azubuike Bright further said that ignorance is the greatest killer of man potential that is capable of limiting one from going far in life..Reviews: A great author name William kings, has given us an essential lexicon and field guide of ignorance, a most slippery and multidimensional concept. Rich in history and philosophical analysis, this work should be required reading in the classroom and the boardroom, in book clubs and around the dinner table. A national conversation about what we do and do not know, should and should not know, and can and cannot know, and the dangers and pitfalls of not knowing the differences." In light of this development, "Boldly but humanely, Robert Graef explores how ignorance is a comprehensive force and an existential danger. Wide-ranging, conscientious, and compellingly well researched, filled with apt examples and vivid metaphors, Ignorance is the most thoughtful book of its kind that I've ever read. In confronting ignorance, Graef has struck a social and historical mother lode, a topic that is at once profound and amusing, specific and inexhaustible. He has set forth on a philosophical marathon and arrived at the finish line without losing his breath. This is a book to cherish. It should be on the bookshelves of anyone who aspires to social consciousness." -Azubuike Bright further said that ignorance is the greatest killer of man potential that is capable of limiting one from going far in life..