What is the author's tone in Buffett: The Making of an American Capitalist by Roger Lowenstein?

The reading of this book is not for the "faint of heart" in economics. It is filled with facts and analyses of investing and the stock market that can be difficult to grasp if one does not have a relatively sound basic understanding. In this respect, the tone is often academic and thus difficult, requiring re-reading of entire sections, in order to grasp exactly what specific financial and investment maneuvers actually involved (for example, LBOs). Fortunately, however, Lowenstein provides significant relief, as he switches to Buffett's own simplification and lay-friendly explanations of Wall Street activity and of investment in general.