The contents of the book are precise and the words are accurate, which implies that it is a book from an official. For years, the writing style of officials have been trained to be explicit whatever you want to write, for efficiency and also for the purpose of saving others' time. It's a pleasure to read books as concise and plain as this one. Actually, nowadays, too many writers write for the number of words but less consideration of its quality.
The Federal Reserve is the central bank of the United States. It plays a significant role in the world's economy since America is the largest economy and its performance has impacts on other economies. The major tools of the Federal Reserve are the lender of the last resort, and adjustment of the interest rate. It maintains the stability of the regular situations but can do quite few when the financial crisis comes. Both the Great Recession and 2008's financial crisis revealed this demerit. It's true that it has a lot of economists but there are quite few consensus among them. Moreover, crisis can be rarely predicted.
Theoretical analyses are pivotal when we make policies. Any policy instruments may be double-edged, which have a good side but also a bad side that might cause more damage than the good. There are many lessons we can learn. For example, when America tried to lower its inflation rate in 1970s, following the increase of the interest rate, the employment decreased, which caused serious social problems. Trade off is the key. And policy instruments shall not be implemented blindly without evaluation. The Chinese government carries out pilot experiments before an important reform takes place, so the effects of the new system can be deliberated carefully.
One thing is that as the chief of the Federal Reserve, Bernanke needed to defend for its previous peers and also the practice of the organization. In this aspect, some arguments of the book might be subjective.