It is of course impossible to predict the effects of new AI technologies on total economic growth in a precise way, but there are strong reasons to believe that the effect will be modest for a decade or two, anyway. Charles Jones Jones explores some of the reasons in “AI and Our Economic Future,” in the most recent Journal of Economic Perspectives (Summer 2026). His arguments readily accept that AI capabilities both have grown very rapidly and will continue to grow very rapidly: indeed, Jones begins by stating that “Artificial intelligence (AI) will likely be the most transformative technology of the modern era.” But he also suggests that growth of this particular technological capability will add to total economic growth in only a modest way for the medium term.
(In the shade of this parenthesis, I will note that I work as Managing Editor of the Journal of Economic Perspectives. Because both the JEP and this post are freely available, I have no financial conflict of interest here. But I confess an intellectual conflict of interest: I do think that the stuff published by the journal I help to run is interesting.)
As a starting point, consider this graph of US economic growth since 1870. The red dashed line shows a growth rate of 2% per year. The blue solid line shows actual growth of average US income per person. You can see economic events like the fall of the Great Depression, the bounceback during World War II and after, but amidst all the events of the last 150 years, 2% growth on average is a pretty good description of what has happened.

Jones writes:
Consider the astounding innovations that underlie the graph. In the 1870s, Thomas Edison’s experiments with electric lighting were just getting underway. Fifty years later, electrification had transformed the economy, both in factories and in city life. Throughout the 150 years, innovations such as the internal combustion engine, airplanes, vacuum tubes, antibiotics, transistors, semiconductors, personal computers, and the internet profoundly changed living standards. Many of these innovations are what economic historians call “general purpose technologies,” whose transformative effects extend throughout the economy. Many also automated some of the tasks involved in creating new ideas—say, through improvements in scientific tools and equipment—raising the productivity of research and idea generation. Yet apparently none of these innovations changed the long- run growth rate of the US economy.
To put it another way, it may be that the extraordinary run of innovations of the last 150 years, a disproportionate number of them with US roots, were needed just to keep the economy growing at that 2% annual pace. But the idea that a fast-growing new technology with broad implications for work and products across the economy will juice economic growth beyond the historical average just hasn’t happened.
Indeed, the US economy has a vivid example in the past few decades of a general purpose technology with sweeping implications for work and the economy that became amazingly and dramatically cheaper. As Jones points out: “You have on your desk roughly 100 million times the computing power that was available on the best computers from the early 1970s. But you and I are not 100 million times more productive …” If you had known back in 1970 that computing power would become 100 million times cheaper in the next half-century, would you have predicted that the US economy would just keep tootling along with 2% growth? In hindsight, of course, it’s easy to say “yes, it’s all obvious to me.” Or would you have been more likely to believe that most workers would become obsolete and the economy would be unrecognizably changed?
The “O-ring theory of development” also known as a theory of weak links is one way to organize thinking on this subject. Jones explains:
An iconic illustration of weak links arose with the accident that destroyed the space shuttle Challenger in 1986. The post-crash investigation found that the key design flaw was in the O-rings: doughnut-shaped pieces of rubber that are designed to create a seal between two interlocking parts. Challenger launched during record-low temperatures causing the O-rings to become brittle and leak, which caused the space shuttle to explode. Partly inspired by this episode, Kremer (1993) developed his O-ring model of economic development.
Basically, the O-ring theory points out that the speed of any complicated process will be limited by its most fragile or difficult-to-replace part. There are probably certain parts in your car that could handle a speed of 300 miles-per-hour; but there are other parts that cannot handle that speed, and they limit how fast you can go. From this perspective, the question for total economic growth is not how fast AI will progress, but what other non-AI factors will limit the speed of growth.
Say that AI tools make all computer software infinitely cheap–essentially a price of zero. Well, software spending is now about 2% of the US economy. If firms and consumers could have and use all the software they want at a price of zero, how much would the total economy expand? Sure, it would be a boost for output. But it wouldn’t be infinite growth. Of course, if 100% of all production could be automated at near-zero cost, then the gains for consumption (everything for nothing!) could be very large. But that outcome is hard to imagine. For example, AI is not going to create more land or natural resources, so even if AI can give us all infinite numbers of on-screen entertainment channels, some imperatives of scarcity and geography will continue to apply for producing energy and physical goods. Organizational and political change in response to AI capabilities can be a limiting O-ring factor, too.
So what about scenarios between 2% of everything being automated and (essentially) free, and 100% of everything being automated? Jones offers some suggestive but pursely illustrative calculations based on assumptions about AI substituting for large and smaller parts of output; for example, one calculation suggests that even if AI could substitute for 50% of economic inputs by replacing all cognitive labor, total GDP would rise by 19%. And of course, in a world of O-ring change, the process of AI making these changes of this size is not going to happen over a year or two, but instead over a few decades.
Again, none of this is to say that AI will not advance rapidly and cause major changes, only that from the perspective of total economic growth, these changes are likely to appear relatively modest for years, even for a couple of decades.
The Jones paper has a number of other insights, but I’ll just add one of them here. In discussions of AI, there is enormous focus on jobs and economic output, but considerably less focus on possible gains to health. One of the great strengths of AI is to focus on a well-defined problem (think chess, or a math proof), and then to draw on a vast body of knowlege to suggest possible answers. Working with AI tools, it seems at least possible that researchers will be able to speed up their progress on addressing health risks of cancer, heart disease, high blood pressure, diabetes, Alzheimer’s, and a wide range of other health risks. Maybe you aren’t at all sure that AI is worth the social disruption just for the economic growth. But what if AI-based research offers a chance for the average person now alive to enjoy several decades more of healthy life? It could be that the non-economic gains from AI-based research (better health? clean energy?) turn out to be more important for human well-being than its effects on total economic growth.








