In The Measure of Progress: Counting What Really Matters, Diane Coyle challenges the dominance of Gross Domestic Product (GDP) as the primary metric for economic success. She argues that traditional economic indicators like the GDP, developed in the mid-twentieth century, are ill-suited to capture the complexities of today’s digital and service-based economies. Coyle highlights GDP’s inability to account for environmental degradation, unpaid labor, and digital services. She draws on her extensive experience in policy and academia to illustrate how measurement shapes our understanding of progress and how flawed metrics can lead to misguided decisions.

Coyle introduces the topic of economic measurement by looking at the problems with measuring innovation. GDP does not measure the cases of innovation that use old technology to do new things—the first page of Coyle’s book explains a case of how ultrasound is now being used to treat Parkinson’s disease, which would not be captured by GDP (p. 1). She ends the introduction by posing her key question: “Is there economic progress?” (p. 8), because, as she argues in chapter 1, this is the central question in economics (p. 11). The question can be deconstructed into several questions—some including “value judgements about which people count and who are the ‘we’ doing the evaluation” (p. 11). “It also raises questions about how to define and measure economic growth and the evaluation of economic welfare” (p. 11). The structure of the book is effective, with well-organized chapters and smooth transitions that guide the reader through Coyle’s personal and professional journey. For instance, the chapter titles are short and easy to understand—e.g., “Free,” “Borders,” “Value,” “Wealth”—and section titles are often short with easy-to-follow phrases or questions, such as “Where Does Economic Value Lie?” (p. 85). She sums up every section and chapter effectively and explains the next item on her agenda (see, e.g., pp. 70–72, 97–98, 176–177). She is clear where she stands—rare in academic books where the first person pronoun is only starting to be encouraged; she writes, for instance, “I am Team Optimism” (p. 42).

Chapter 1 explains how “political arthemetick” (p. 22)—the way economic activity is measured and interpreted by governments and others—experiences breaking points when new syntheses of “economic theory and statistical classifications occur” (p. 25). Coyle argues that our current moment is one such breaking point. The gap “between the structure of the economy and the picture painted by economic statistics” is too big (p. 15). The following chapters 2 to 7 diagnose the failure of the current statistical framework. Chapter 2 deals with the disappearance of meaningful growth and hints at the error of not measuring rising digital innovation. Chapters 3 to 5 discuss the difficulties of measuring digitalization, the “dematurialisation of economic value, the disintermediation of activities and business model changes, and the provision of free products” (p. 32). Chapter 6 looks at the impossibility of measuring flows of value across borders. Chapter 7 analyzes the problems with price indices. Chapter 8 offers an alternative measure: the comprehensive wealth framework embedding sustainability and including non-market values.

The final chapter brings the threads together, proposing a new framework for counting progress: the comprehensive wealth approach. The approach emphasizes that progress should be measured not just by GDP but by the total stock of assets that sustain well-being over time—natural, human, social, and produced capital. It integrates environmental sustainability, social cohesion, and institutional quality alongside economic output to reflect long-term resilience and prosperity. The approach shifts focus from short-term flows to the maintenance and growth of these diverse forms of wealth for future generations. For instance, labor services are seen as “a flow deriving from the stock of human capital,” making “many expenditures on health and education a form of investment rather than consumption” (pp. 250–251). The way you count, as Coyle shows throughout the book, can change the way you see and act in the world. Additionally, the approach uses shadow prices and not market or exchange prices as weights to aggregate individual activities, because the latter creates “an illusion of objectivity” (p. 252). Coyle then discusses the need to change official classifications of different economic activities, and how some places never get properly counted, such as smaller towns. Finally, she lays out a time-use accounting framework, discussed further below.

Written in accessible language, the book succeeds in making complex statistical concepts understandable to readers beyond the field of economics. The clarity is one of its greatest strengths, allowing Coyle to reach a wider audience and provoke broader reflection on how we define progress. For instance, she effortlessly explains the problems of measuring real GDP due to changing prices and the basic basket of goods demanded (pp. 178–179). Additionally, she uses rhetorical questions and everyday examples everyone can understand: “What is happening to the prices that cloud users are paying?” (p. 91); discussion of online food shopping during the pandemic (p. 99); or “What does this trajectory of broadly substituting capital (physical and intangible) for paid labour do to our understanding of economic change?” (p. 101). A final example: Coyle’s discussion of the smart phone and its diverse functionalities is effectively articulated, helping readers grasp how contemporary measurement frameworks overlook the profound changes in daily life introduced by such technologies (p. 104).

Coyle thoroughly explains several somewhat abstract concepts clearly and concisely, bringing in both the practical and philosophical issues they invoke. For instance, in chapter 2 there is a thorough discussion on productivity—what economists, politicians, and the public think of when talking about productivity. She explains how the greater public will think of employers forcing employees to get off Facebook, while economists (and politicians) know that productivity growth requires not only more time from workers but additional capital and other inputs. “A construction worker is made more productive by working with more powerful and sophisticated tools, not by being shouted at to dig harder and faster with a spade” (p. 35). Later in the same chapter, Coyle rightfully argues for the need to measure output per unit of energy and not labor or machinery: “productivity is not a technical concept but is inherently value laden; the conventional metrics embed a notion of value that may not align with current conceptions of economic progress” (p. 56). The other concept explained well is neoliberalism: “a convenient shorthand for the kind of economic theory that reached its heyday in the 1980s and 1990s, filtered through the political process into policy decisions that favoured markets over state and saw them as substitutes rather than complements” (p. 60).

Moreover, her use of anecdotes adds a human dimension to what could otherwise be a dry technical subject. These stories not only illustrate her arguments but also make the book enjoyable to read. For example, she includes a photo taken by her husband at the event unveiling the first iPhone (p. 102). More personal, she includes a photo of her mother and siblings in the postwar period (p. 179). The book is a great example of good storytelling—starting with a picnic at Harvard at the beginning of her PhD studies (p. 10), and with a photo of her grandchildren, entitled “The future” (p. 208), coming towards the end of the book. And good storytelling, as I have argued elsewhere, is essential and thus needs to be celebrated.

From the perspective of a historian of economics, however, the book’s engagement with the history of quantification is somewhat limited. Her references to foundational economists like Adam Smith would benefit from proper citations to strengthen the historical grounding (e.g., p. 57). The description of Theodore Porter’s, Thomas Stapleford’s (p. 185), and Eli Cook’s (p. 220) work is welcomed. But the absence of Dan Hirschman’s work on GDP is a missed opportunity (Hirschman Reference Hirschman2021). Hirschman’s conceptualization of GDP as a knowledge infrastructure would make it clearer why “the core elements are unchanged” (p. 259).

Despite these gaps, Coyle’s philosophical insights are compelling. She emphasizes that economic indicators are not objective truths but constructed tools that reflect societal values. She also emphasizes that economic measurement is not neutral; it reflects value judgments and philosophical assumptions. GDP, argues Coyle, is a product of its time, designed for a manufacturing-based economy, and fails to capture the nuances of today’s digital and service-oriented world. Coyle mobilizes philosophy of science literature to explain how economists use “thick concepts” that are both descriptive and evaluative (p. 261). Unlike other social scientists, however, economists often ignore that their work makes value judgments. Efficiency, in contrast to what economists say, is not only descriptive but also inherently normative.

One of the most intriguing aspects of the book is Coyle’s proposal to use time as an alternative metric. She suggests that time, as the ultimate scarce resource, could serve as a more meaningful measure of economic activity and well-being. Coyle argues that a time-use accounting framework would flip the perspective on economic welfare, because the “welfare outcome would be individual ’full incomes,’ or the sum of utilities (measured in terms of a monetary numeraire) over time, taking into account paid work, household work, and leisure, and measuring the well-being derived from each activity” (p. 256). However, the book leaves some ambiguity about how such a metric would be implemented. Given her emphasis and that of others on the “power of a single number,” it would have been helpful to see a more concrete proposal or example of how time-based measurement could replace or complement GDP (p. 247) (although she acknowledges the difficulty of translating the concept into a single, powerful statistic).

In conclusion, The Measure of Progress is a thoughtful and timely contribution to the debate on economic measurement—she describes the changing economy due to digitalization and artificial intelligence. Coyle’s awareness of the value-laden nature of quantification is refreshing. She acknowledges that economists often ignore the normative implications of their metrics, and she calls for greater transparency and reflection in the construction of economic indicators. Her book challenges readers to reconsider the assumptions behind familiar statistics and to imagine new ways of capturing what truly matters. While the book could benefit from deeper historical engagement and more detailed proposals for alternative metrics, its core message is clear and compelling: how we count shapes how we act. Her critique is not merely academic; it is a call to action for policymakers, statisticians, and economists to rethink the tools they use to shape public policy.