Unlike many who have reviewed this book so far, I'm not a long-time reader of Brad DeLong's blog and I'm not particularly familiar with his previous work, either academic or popular. Unfortunately, I didn't find his account of what he calls "the long 20th century" (the period from 1870 to 2010) to be particularly enlightening on many fronts, largely due to the a few glaring holes in the narrative (most notably climate change). DeLong reassures readers at the start of the book that not being able to cover some topics is a consequence of writing a grand narrative history which he understands well, but I really think he uses this as a crutch to avoid talking about topics which he doesn't feel comfortable in or which disturb his grand narrative.
DeLong's narrative is basically as follows: starting in 1870, the world had achieved some measure of progress in living standards compared to pre-industrial societies, but this was concentrated among the upper and upper-middle classes in the most prosperous countries, while the vast majority of people were either still in a poverty trap, or worse, in servitude or even slavery. After 1870, however, something changed. The coming of the industrial-scientific research lab, the legal structure of the modern corporation, and the globalisation-enhancing technologies of communication and travel, all meant that economic growth went into overdrive, first in the period from 1870-1914, and later in the post-war period until the 1970s. This growth miracle was then complemented (in DeLong's view) by the fact that the world's pre-eminent economic power during the period was liberal-democratic and a supporter of the market system. While the increases in average living standards and aggregate production have been astounding over the long twentieth century, the ways in which increased wealth is dealt with as a society is a long way from the utopias which were envisaged by 19th century political theorists, such as Karl Marx or John Stuart Mill. Instead, as DeLong puts it, humanity learned to 'slouch towards utopia' - i.e. increase the lot of most people through the compounding effect of year-on-year wealth and income growth. With the fractures which have emerged in the twenty-first century (geopolitics, economic stagnation, climate), this progressive advance of global living standards seems to have gone off track, perhaps indefinitely.
Let me start with the things I did like about the book.
DeLong is obviously a competent analyst when applying the lessons of mainstream economics to historical events. When these events happen to be closer to the United States and closer to the times in which DeLong has been working as an economist, his analysis is often really clear, level-headed and focused. The closing chapters on neoliberalism, globalisation, and the great recession are the highlights of the book in my opinion, and perhaps a more humble book which covered the period of 1973-2010 would've made a much more compelling read (although there are quite a few books which tread this path already).
DeLong clearly cares about the state of public policy and economic governance in the United States and provides a clear narrative about how economic mismanagement is at the root of many of the causes of malaise in the modern-day U.S. To try to use the lessons of history as guidance for future policy action is admirable and something which I wish that more economic historians were brave enough to put into their books. DeLong notes at the end of the book that his focus on individual action and contingency is unlikely to be favoured by most historians, but that this is the narrative that he wanted to tell. Again, that probably doesn't make for the most compelling history, but has a function in DeLong's unstated aim of using the history of 20th century economic progress to inform responses to America's current economic woes.
Now for what I didn't like in the book.
DeLong's writing style irked me quite a lot (although I know this kind of personal blogging style has been praised by other reviewers) and some of the stylistic quirks he chooses are odd - particularly insisting on listing some of the places where people lived alongside their national/ethnic identity (for instance, why was Karl Polanyi described as a 'Torontonian'). DeLong also comes up with some catchphrases to summarize ideas which he sees as being too complex to treat at length - notably those of Polanyi and Friedrich Hayek. I can see where this would work in a short blog post, but this is supposed to be a 550 page book of economic history. Treat your readers as if they have the attention span to read something more than crude simplifications.
Content-wise, I found DeLong out of his depth when talking about history which didn't relate to the United States, with the chapters on Really-existing socialism and Fascism/Nazism being particularly boring. It feels like in these chapters that DeLong has nothing to add, past what you would get in a high-school history textbook. There is also a weird trend in the book, that the further away from the US you get, the further away from economic history you get. The extensive detours into the battlefield history of World War II are boring, add nothing to the narrative, and reads like something from an amateur military history aficionado. Not what you pick up an economic history book for. DeLong's treatment of political economy then in the post-war period reads like an economist who is unwilling to learn from other social scientists. Instead, the narrative comes off like an apologia from a self-described 'left neoliberal', who wants you to know that while he is nostalgic for the era of social democracy from 1945-1973, he also doesn't regret the policies which were implemented during his time in the Clinton administration from 1993 to 1995. DeLong also is reluctant to try to step out of his own political point of view, and to give opposing points of view a fair hearing. He seems to think the hybrid of Polanyi and Hayek (mediated by Keynes), or of social democracy and neoliberalism, which he supports is so reasonable and unimpeachable that no further discussion is warranted.
The book ends with DeLong discussing the issues which are most important for the 21st century in brief. These are also issues which DeLong knowingly omits from the analysis of his long twentieth century. Climate is the most obviously glaring omission. DeLong knows and accepts the science on climate change, supports policies to redress it, and is aware that it is the biggest challenge which humanity faces. And yet, he's unwilling to take the leap into how this should completely reshape his analysis. He doesn't even begin to entertain the idea that the period after 1945 marked the entry into a new geological era, in which nothing can be understood without considering humans' indelible effect on the climate. How on earth can you sit and write in the 2010s on the history of economic growth and living standards without thinking about how this is related to climate change? DeLong's cursory glances at the history of energy and resources in the twentieth century is also incredibly disappointing. I could go on about the lack of analysis of geopolitics, but at this point I think you get the idea that there just isn't any.
Overall, I can say I learned quite a few things reading DeLong's book and that the actual reading is not at all difficult for a book of this length or scope. Nevertheless, it is a disappointing work of economic history, containing more than a few flaws. Chapters from it could maybe be recommended for high school students or introductory economic history courses in university, but overall this is not a book I would recommend to people who already have a decent understanding of the 20th century.
DeLong's narrative of the three drivers of 20th century growth (the industrial lab, the corporation, communication and travel technologies) is not wrong in many ways, but it is also not that enlightening when it comes to many of the most important questions. The reader is eventually left with questions that are better answered by better books on the subject.