Imperfection

Alan Greenspan acknowledged in his recent book, The Age of Turbulence, "There are errors in this book. I do not know where they are. If I did, they wouldn’t be there. But with close to two hundred thousand words, my probabilistic mind tells me some are wrong. My apologies in advance." (Alan Greenspan, The Age of Turbulence. NY: Penguin, 2007, p. 507.)