As you say in your review of Donald Rumsfeld’s Known and Unknown: A Memoir (San Francisco: Sentinel, 2011), little unexpected emerges from the autobiography (“Ducking and Diving,” February 19, 2011). Except that it is still a “good read,” perhaps. Famous for his “unknown unknowns,” the phrase he used in February 2002, he focuses on “known knowns” instead. Iraq and Afghanistan are to blame on Condalezza Rice, for example. As well as on George Bush, too. But the only surprise, at least according to your review, is that Dick Cheney “escapes with no hint of blame.” You do not dwell on this tidbit, but this is where many “known unknowns” apparently hide. Oil and construction? Once upon a time, Cheney was Rumsfeld’s assistant, after all. The remaining quadrant to explore is that of “unknown knowns,” which will take a little time to come out. Iraq and Afghanistan are not about the White House, for sure. Bush and his team, including Rumsfeld, were a bunch of little helpers at best. The good old military-industrial complex?