Stanford University


The Coming Era of Productivity Growth

Irving Wladawsky-Berger

Irving Wladawsky-Berger
Digital Fellow

August 17, 2021
7 min read

The past 15 years have been economically tough for many Americans, but there are encouraging signs of a turnaround.

In their recent article, The Coming Productivity Boom, Stanford Digital Economy Lab (S-DEL) Director Erik Brynjolfsson and S-DEL Digital Fellow Georgios Petropoulos point out that while US labor productivity growth averaged only 1.3 percent since 2006—less than half the rate of the previous decade—productivity growth increased by 5.4 percent in the first quarter of 2021. “There’s reason to believe that this is not just a blip,” the researchers write, “but rather a harbinger of better times ahead: a productivity surge that will match or surpass the boom times of the 1990s.”

After growing at an average annual rate of around 2.8 percent between 1947 and 1973, US productivity has significantly slowed down, except for the internet-driven productivity boost between 1996 and 2004. Despite the relentless advances of digital technologies over the past 15 years—from smartphones and broadband wireless to cloud computing and machine learning—productivity has only grown at an anemic 1.3 percent, between 2006 and 2019. Most OECD countries have seen similar slowdowns.

What accounts for this puzzling so-called productivity paradox and when might it finally end? During the past several years, Brynjolfsson and his collaborators have explored this question, first at MIT where he was faculty director of the MIT Initiative on the Digital Economy, and since 2020 at Stanford, where he’s director of S-DEL. Brynjolfsson discussed alternative explanations for the paradox at a recent MIT conference.

Measuring productivity is difficult in an increasingly digital economy 

Most measures of economic performance used by government officials to inform their policies and decisions are based on gross domestic product, or GDP. But this measurement is a relic of a time dominated by manufacturing when the production of physical goods was much easier to measure. GDP is a much less reliable measure of economic output and productivity in our digital economy, where services play a much bigger role and are subject to considerably more variation in quality and value.

How do you measure the value of the explosive amounts of free goods available over the internet, including Wikipedia articles, Facebook social interactions, Linux open-source software, and YouTube videos? Since all these services are free, they’re excluded from GDP measures. Furthermore, many new services we used to pay for are now also free or nearly so, including long-distance calls, news, maps, and music.

2019 research paper co-authored by Brynjolfsson introduced a novel method for measuring the value of free digital goods to consumers using online experiments. The experiments provided an estimate of the consumer surplus of a digital good, loosely defined as the difference between the amount consumers would be willing to pay and the actual price they did pay for the digital good. The data showed that the digital economy is contributing considerably more consumer value than we’ve realized, especially when you consider that 15 years ago many of these digital services didn’t exist or were in their infancy. Now, they’re tightly integrated into our work and personal lives, much more so since many of our interactions have been driven online by the pandemic.

Innovation and productivity are declining 

Some economists contend—most prominently Northwestern University’s Robert Gordon—that our current digital technologies, advanced and exciting as they might be, aren’t as transformative as the industrial-age technologies from the period between 1870 and 1970 when we experienced high productivity growth and a rising standard of living. Gordon argues that the slow growth of the past few decades isn’t cyclical, but rather evidence that long-term economic growth may be grinding to a halt. There was little growth before 1800, and there might conceivably be little growth in the future.

However, even a technology skeptic like Gordon admits that the pandemic will likely have a positive impact on productivity—albeit a small one—as a result of the accelerated digitization and reorganization of work. 

In July, Brynjolfsson and Gordon made a modest Long Bets wager regarding productivity growth for this decade. Brynjolfsson predicts that “private nonfarm business productivity growth will average over 1.8 percent per year from the first quarter (Q1) of 2020 to the last quarter of 2029 (Q4).” Gordon challenges that prediction, arguing that 1.8 percent productivity growth isn’t consistent with the historical record. The loser of the bet will make a $400 donation to GiveWell charities.

Tech advances rapidly, humans not so much

A third explanation for the productivity paradox—and the one I find most compelling—is described in The Productivity J-Curve, a working paper co-authored by Brynjolfsson in January 2020. According to the paper, there’s generally been a significant time lag for a major new transformative technology to be widely embraced across economies and societies. While technologies may advance rapidly, humans and our institutions change slowly.

The paper identifies two phases, investment and harvesting, in the life cycle of a historically transformative technology. Since these technologies are general purpose in nature, they require massive complementary investments for their full benefits to be realized, including new products, processes and business models, and the re-skilling of the workforce. The more transformative the technology, the longer it takes to reach the harvesting phase—and only then will it be widely embraced by companies and industries. Translating technological advances into productivity gains requires major transformations in the strategy, organization, and culture of institutions—and these take considerable time.

For example, US labor productivity grew at only 1.5 percent between 1973 and 1995. This period of slow productivity coincided with the rapid growth in the use of IT in business, giving rise to the Solow productivity paradox, a reference to Nobel Prize MIT economist Robert Solow’s 1987 quip: “You can see the computer age everywhere but in the productivity statistics.” But starting in the mid-1990s, US labor productivity surged to over 2.5 percent, as fast-growing internet technologies and business process re-engineering helped to spread productivity-enhancing innovations across the economy.

Similarly, productivity growth didn’t increase until 40 years after the introduction of electric power in the early 1880s. It took until the 1920s for companies to figure out how to restructure their factories to take advantage of electric power with manufacturing innovations like the assembly line and new electric products like consumer appliances. And while James Watt’s steam engine ushered the Industrial Revolution in the 1780s, its impact on the British economy was imperceptible until the 1830s because their use was restricted to the few industries who could afford their high early costs.

How do we measure the digital economy?

S-DEL researchers are exploring new means and methods to measure a rapidly changing digital economy.

GDP-B: A New Well-Being Metric in the Era of the Digital Economy

Using Massive Online Choice Experiments to Measure Changes in Well-Being

Person searching on phone

Measuring the Impact of Free Goods on Real Household Consumption

The rise of the productivity J-curve

Brynjolfsson argues that the 2020s will be a decade of innovation and productivity, a kind of 21st century Roaring Twenties. What accounts for his optimistic prediction? Brynjolfsson cites three reasons why “this time around the productivity J-curve will be bigger and faster than in the past.”

Reason #1: The advancement of AI and other digital technologies. Beyond AI, several scientific and technological advances are ready to transition from the investment phase of the J-Curve to the harvesting, productivity-growth phase. These include digital innovations that have been considerably accelerated by the pandemic, such as telemedicine, e-commerce, and remote work, as well as breakthrough advancements in renewable energy and biomedical sciences. “In drug discovery and development, new technologies have allowed researchers to optimize the design of new drugs and predict the 3D structures of proteins,” writes Brynjolfsson. “At the same time, breakthrough vaccine technology using messenger RNA has introduced a revolutionary approach that could lead to effective treatments for many other diseases.”

Reason #2: Exponential growth caused by the pandemic. “The recent COVID-19 relief package is likely to reduce the unemployment rate from 5.8 percent (in May 2021) to the historically low pre-covid levels in the neighborhood of 4 percent,” writes Brynjolfsson. “Low unemployment levels drive higher wages, which means firms have more incentive to harvest the potential benefits of technology to further improve productivity.”

Reason #3: Incentives created by ambitious policies. Aggressive US fiscal and monetary policies are creating greater incentives for companies to implement productivity improvements.

“When you put these three factors together—the bounty of technological advances, the compressed restructuring timetable due to COVID-19, and an economy finally running at full capacity—the ingredients are in place for a productivity boom. This will not only boost living standards directly but also frees up resources for a more ambitious policy agenda.”

In addition to being a Stanford Digital Economy Lab Digital Fellow, Irving Wladawsky-Berger is a research affiliate at MIT’s Sloan School of Management and fellow at both the MIT Initiative on the Digital Economy and MIT Connection Science initiative.

“Low unemployment levels drive higher wages, which means firms have more incentive to harvest the potential benefits of technology to further improve productivity.”

Director, Stanford Digital Economy Lab


Three Digital Fellows Receive Antitrust Writing Award

August 2, 2021
1 min read

Three Stanford Digital Economy Lab digital fellows have received a 2021 Antitrust Writing Award for their working paper titled “Digital Platforms and Antitrust.”

The digital fellows, Geoffrey Parker, Georgios Petropoulos, and Marshall Van Alstyne, were recognized as authors of the best academic paper written in the Digital category.

Organized by Concurrences and The George Washington University Law School’s Competition Law Center, the Antitrust Writing Awards celebrate the best in antitrust writing across a spectrum of categories, including mergers, intellectual property, and procedure.

Meet the Digital Fellows

Georgios Petropoulos

Georgios Petropoulos

Georgios is a post-doctoral researcher at MIT Initiative on the Digital Economy and a research fellow at Bruegel, an economics think tank based in Brussels. His research focuses on digital platforms, competition policy, and the implications of new technologies on labor markets.

Marshall Van Alstyne

Marshall Van Alstyne

Marshall is one of the leading experts in network business models. As co-developer of the concept of “two-sided networks,” he has been a major contributor to the theory of network effects, a set of ideas now taught worldwide. 

Geoffrey Parker

Geoffrey Parker

Geoff has made significant contributions to the field of network economics and strategy as co-developer of the theory of “two-sided” markets. He is also co-author (with Marshall Van Alstyne) of the book, Platform Revolution.

The EU Digital Markets Act:
Will it shake up big tech?

Parker, Petropoulos, and Van Alstyne discuss the EU Digital Markets Act, legislation that seeks to reign in the power of big tech companies like Amazon, Apple, and Google.


S-DEL and SIEPR to Evaluate the Future of Work in California

July 19, 2021
4 min read

Automation is on the rise. The nature of work is rapidly changing. And businesses and California policymakers are dealing with a growing set of challenges and opportunities presented by the state’s evolving workforce and job market.

The Stanford Digital Economy Lab (S-DEL) and the Stanford Institute for Economic Policy Research (SIEPR) are embarking on research that will help evaluate how artificial intelligence and machine learning will impact the future of work in California for the next century. The project begins this summer and will be led by S-DEL Director Erik Brynjolfsson and SIEPR Director Mark Duggan.  

The work will be performed in collaboration with California 100, an initiative to envision and shape the long-term success of the state. Incubated at the University of California and Stanford University, the California 100 initiative will focus on creating policy recommendations to ensure the state’s sustainability, innovation, and equity for the next century. 

“The vision of the California 100 initiative aligns perfectly with the Lab’s vision of building a technology-driven economy that benefits everyone,” said Brynjolfsson. “We look forward to being a part of a project that helps companies and workers in California take on the challenges and opportunities posed by digitization and automation.”

Stanford researchers will develop a Future of Work Dashboard that draws on S-DEL’s data and insights to illustrate the transformation of jobs throughout California. The dashboard will sample a range of occupations across different regions, wage levels, education levels, and skill bundles to assess the resilience of each job to automation. The data will also highlight the most valuable skills in each occupation, suggest adjacent lines of work, and provide a comprehensive outlook for each position.

Future of Work Dashboard

The Future of Work Dashboard will utilize data from ongoing Stanford Digital Economy Lab research, including the following research areas and projects.

Outline of head/AI

Suitability for Machine Learning Rubric

The Suitability for Machine Learning (SML) Rubric project offers a theoretical framework for how occupations will change and predicts which occupations are exposed to advances in machine learning and robotics methods.

Wooden blocks connecting people


Using data from 200 million online job postings, S-DEL is training a natural language processing model to learn the language of jobs.

Warehouse worker in mask

Economic and Productivity Impacts of COVID-19

SDEL’s research team is examining how businesses and workers are adapting to COVID-19 measures, such as lockdowns and remote working, brought on by the pandemic.

Researchers will address issues tied to tax policy and minimum wage and their impact on innovation and automation. “Rigorous, data-driven research is the foundation for creating good economic policy,” Duggan said. “Our work at SIEPR has long informed policy decisions at the local, state, and federal levels, and this is an opportunity for us to make important contributions to California’s economic future.”

Stanford’s research and insights will inform a broad set of policy recommendations that will be developed in conjunction with research from other universities and research institutions. The research will be completed in December 2021.

Follow us on Twitter for updates about the California 100 initiative, as well as other S-DEL research projects. 

Future of Work in California report cover

A New Social Compact for Workers in California

A March 2021 report released by the Future of Work Commission detailed what must be done to ensure inclusive and long-term economic growth in California. The Commission, which included Stanford HAI co-director Fei-Fei Li and HAI advisors Mary Kay Henry and James Manyika, devoted 18 months to meeting and listening to workers, employers, researchers, and other members of civil society to understand the current state and future of work and workers in California.

“We look forward to being a part of a project that helps companies and workers in California take on the challenges and opportunities posed by digitization and automation.”

Director, Stanford Digital Economy Lab

July 12, 2021
MIT Sloan

After years of decline, productivity is poised to accelerate, says Stanford Digital Economy Lab Director Erik Brynjolfsson. The next challenge is preparing workers, and making sure benefits aren’t distributed unequally.

Read article

June 1, 2021

Recap: Our Spring 2021 Seminar Series

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Missed a seminar? Watch it now.

Our weekly Seminar Series features a wide range of experts discuss research on topics focused on AI and the digital economy. A big thanks to all the colleagues and collaborators who joined us to share their time and insights.

Workforce Education: A New Roadmap

March 8, 2021
Sanjay Sarma
Bill Bonvillian

Modernizing Measurement of Productivity with Nonstandard Data

March 22, 2021
Erica Groshen
Cornell University

Power Laws in Economics

April 5, 2021
Xavier Gabaix
Harvard University

Winner-Take-All Markets

View presentation slides

April 12, 2021
Robert Frank
Cornell University

Hiring as Exploration

April 19, 2021
Danielle Li
MIT Sloan School of Management

Influence and Interventions in Networks

April 26, 2021
Ben Golub
Northwestern University

Artificial Intelligence, Globalization, and Strategies for Economic Development

May 3, 2021
Joseph Stiglitz
Columbia University
Anton Korinek
University of Virginia

The Demand for Executive Skills

May 10, 2021
Raffaella Sadun
Harvard Business School

Watch on YouTube

Remaking the Post-COVID World

May 17, 2021
Daron Acemoglu

Stanford University