He didn't get it and the truth is, most of us read books without thought as to how the writers arrive at their conclusions, where they find their facts, what assumptions they operate under, what they want us to believe or think, or what facts they choose to keep hidden from their readers.
Historians, like writers and photographers, influence the way people see the world. We can prevent people from seeing truth or we can depict truth as close to reality as possible. No matter how truthful and honest, each historian presents a biased version of the truth. This is especially true when philosophical fads sweep the academic community -- presenting a "Marxist," "feminist," or any other "kind" of history is presenting a biased view. It may be naming the bias, but it is, nevertheless, a bias and might not, ultimately, be helpful as analytical tools.
Greg Marinovich and Joao Silva, South African photographers who depicted the secret war fought in South African townships during the four years between Nelson Mandela's release from prison and the first democratic elections in the country, depicted the internal struggle of presenting news -- or history -- in a biased manner in their book, "The Bang Bang Club." Though they were primarily concerned with demonstrating the personal moral struggle that occurred as they took photos of violence and death without lending a hand, they also demonstrated how snapshots, like articles and books, only show one aspect of the truth. This reality quickly caught up with one of the members of the "Bang-Bang Club," Kevin Carter.
Kevin Carter won a Pulitzer Prize in 1993 for his photo of a starving Sudanese child, stalked by a vulture a few feet away. The photo only shows the apparent imminent danger that the child is in, but fails to show how close the feeding center is or even that the vulture is not threatening the child in any way. Wherever he went, Kevin was dodged with questions about what happened to the little girl in the photo, and why he didn't help her to the feeding station after he had taken the photo, and whether she had made it at all (he didn't know).