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Work and experience create and broaden our knowledge. It is of value to test the veracity of the indirect book knowledge by applying it to reality. Sir Isaac Newton, applied mathematics to his personal experience, resulting the discovery of kinetic theory. Nicholus Copernicus, through extensive observation and existing scientific analysis, calculated the earth and other planets’ orbit around the sun. Such knowledge is now easily assessable in textbooks, but would require decades of work on our own to research and understand that phenomenon.

Books are valuable when knowledge is beyond the scope of our experiences. Perhaps the most obvious examples are those fluent writers. They write various stories, the scopes of which are far beyond any individual's experiences. Take Joyce Carol Oates for example, her productivity has been prodigious, accumulating in less than two decades to nearly thirty titles, including novels, collections of short stories and verse, plays and literary criticism. Although some of them appear to come from her own direct observations, her dreams, and her fears, much more is clearly from the experiences of others. Her fictive world remains strikingly akin to that real one reflected in the daily newspapers, the television news and talk shows, and the popular magazines of our day.