Economist · Writer · Noahpinion
"The physicist who traded quarks for GDP - and ended up with 414,000 people hanging on his every word."
NYU Marron Institute
Profile
He could have spent his career publishing papers that twelve people read. Instead, Noah Smith quit a tenure-track job, left academia behind, and built one of the most widely-read economics platforms in the world. The newsletter is called Noahpinion. The ambition is exactly that large.
Start with the biography, because it's genuinely strange. Smith grew up in Texas, studied physics at Stanford - the kind of rigorous, unforgiving discipline that teaches you to follow evidence wherever it leads. Then he spent three years living in Japan before pivoting, mid-life, to a PhD in economics at the University of Michigan. His dissertation focused on expectation formation in financial markets. If that sounds dry, the blog he started during his PhD - initially called Noahpinion on a Blogger account that precisely no one was meant to read - suggests a different kind of mind at work.
The blog got noticed. Paul Krugman linked to it. Brad DeLong linked to it. Mark Thoma linked to it. In the closed world of academic economics, where blog posts were viewed with mild institutional suspicion, Smith was writing clearly, provocatively, and without the hedging that makes most economic writing unreadable. He was arguing with people. He was being wrong sometimes, and saying so. He was, in short, practicing a form of public intellectual work that economists had largely forgotten how to do.
Bloomberg Opinion came calling. He joined as a columnist in 2013, while still holding his assistant professor position at Stony Brook University. By 2016, he had left Stony Brook entirely to write full-time. By 2021, he had left Bloomberg too - trading institutional platforms for Substack and the radical experiment of seeing whether readers would pay directly for his work. They would. More than 414,000 of them do, making Noahpinion one of the largest economics newsletters on any platform, ranked second in Business on Substack as a whole.
The content is harder to summarize than the career, because Smith covers an unusual range with genuine curiosity. One week he's analyzing US-China decoupling and its implications for semiconductor supply chains. The next he's writing about housing construction, or clean energy subsidies, or the empirical evidence on immigration and wages. He writes about AI and productivity - skeptical of near-term catastrophism, interested in the longer-term disruptions. He writes about authoritarianism as a global trend. Occasionally, he writes about his rabbits.
His intellectual home is what he calls techno-optimism: a genuine belief that technology is more transformative and broadly beneficial than most people recognize, combined with a center-left policy framework that says governments need to actively build things rather than just regulate them. He is not ideological in the way that makes writing predictable. He will argue with the left on immigration economics, with the right on industrial policy, with both sides on trade. What he is consistent about is following the data - a habit, perhaps, that traces back to Stanford and the discipline of physics.
He co-hosts the podcast "Econ 102" with tech investor Erik Torenberg, an unusual pairing that reflects his interest in bridging economic thinking with Silicon Valley culture. He is an affiliate at the NYU Marron Institute. He published a book in Japanese in 2025, and is working on an English-language macroeconomics text - an attempt to bring rigorous economic thinking to a general audience in the way that his newsletter does, but at book length and with more structural care.
The 414,000 subscribers represent something worth noting. They are not passive. Noahpinion posts 4-5 times per week, and the comment sections - for paid subscribers especially - are unusually substantive. Smith responds. He updates his views publicly. He has built, over a decade and a half of online writing, something close to a community of people who want to think carefully about how the world works. In a media environment that frequently rewards speed and outrage over accuracy and nuance, that is a harder thing to build than it sounds.
The rabbits are named Cinnamon and Constable Giggles. They have their own following. They are not metaphors for anything. They are just rabbits, and Smith likes them, and he talks about them online, and this is somehow the most humanizing detail in a profile that could otherwise read as a list of impressive credentials. He is, underneath the PhD and the Substack empire and the Bloomberg tenure, a person who finds rabbits delightful and says so. That tendency - to be genuinely, specifically interested in things - is probably what made him a good writer in the first place.
What He Writes About
Smith is a committed techno-optimist. He believes technological progress - in AI, clean energy, biotech - is more transformative and beneficial than mainstream discourse recognizes. He tracks it carefully, celebrates wins, and calls out hype when he sees it.
One of his most consistent beats. Smith analyzes the economic and strategic tensions between Washington and Beijing with more nuance than most - covering semiconductors, manufacturing, decoupling, and the limits of both hawkish and dovish positions.
Housing, healthcare, green energy. Three sectors where Smith argues America dramatically underbuilds. His policy framework is supply-side in a liberal direction: the answer to high prices and insufficient services is to produce more, not just subsidize demand.
Skeptical of near-term mass unemployment predictions, interested in longer-term productivity and displacement effects. Smith tries to track what's actually happening in the data rather than extrapolating from demos or theoretical capabilities.
His most-cited theoretical framework: the idea that social instability in recent decades partly reflects an oversupply of educated young people relative to available high-status positions. Contested, but widely discussed across the political spectrum.
A recurring concern in his writing: the global trend toward authoritarian governance, what drives it, and how liberal democracies should respond. He takes this seriously as a structural threat rather than a temporary political fashion.
Career
In His Own Words
Society is more effective when everyone understands the facts a little bit better.
On why he writesI never expected my blog to get that big, and I'm incredibly grateful to all of you.
2025 Year in ReviewMy Twitter persona is not me as much as I've tried to make it me. It can't be me.
On social media and identityI'm a pretty standard center-left liberal who just wants everyone to have enough food and housing and health care and a decent wage and basic dignity.
On his political outlookAnalysis
The physics training matters more than it sounds. Physics teaches a particular epistemic discipline: build models, test them against data, discard them when they fail. Most economists are trained in this way, but the culture of academic economics - where admitting error is career risk - works against it in practice. Smith, having gone through the PhD process and then left it behind, seems to have retained the discipline while shedding the defensiveness.
The Japan years matter too. He spent three years there before his PhD, and it gave him a firsthand understanding of an economy that doesn't fit neatly into Anglo-American economic frameworks. Japan's industrial policy, its demographic challenges, its relationship to manufacturing and technology - these are themes he returns to repeatedly, with more texture than a writer who knew Japan only through statistics.
His eight years at Bloomberg Opinion gave him something that independent writers rarely get: a large platform before the platform was his own. He reached millions of readers through Bloomberg. He developed a voice that could handle pressure, deadlines, and the specific challenges of writing for a financial news audience that is simultaneously sophisticated and impatient.
When he left Bloomberg in 2021, he was not betting on a blank slate. He was taking a known quantity - a voice that had proven it could attract and hold readers - and moving it to a platform where readers paid him directly. The bet paid off. The growth from his Bloomberg days to 414,000 Substack subscribers is not a story about the internet and luck. It is a story about accumulating credibility over time and then converting it into a sustainable business.
Smith calls himself a techno-optimist, and the label fits, but it needs some qualification. He is not a techno-utopian - he does not believe technology will solve all problems without deliberate policy choices. He is not a naive booster who ignores downsides. What he believes is that the transformative potential of new technologies is consistently underestimated by mainstream commentators, and that the right policy response is to accelerate beneficial development rather than manage it cautiously into mediocrity.
On AI specifically, he occupies an interesting middle ground. He is skeptical of near-term predictions of mass unemployment - the data, so far, does not show the labor market disruption that the scariest forecasts predicted. But he takes seriously the longer-term disruptions, and he tracks productivity data carefully looking for the gains that AI advocates claim are coming.
What Smith has built at Noahpinion is a proof of concept for a specific kind of independent intellectual work. Not a pundit who comments on today's news. Not an academic who writes for other academics. Something in between: a writer with genuine expertise, writing for a smart general audience, at a pace and depth that institutional media rarely allows.
The 414,000 subscribers who pay for or read his work represent a vote of confidence in that model. Whether it scales to a book, or to other formats, or to other writers following the same path - that is the interesting question the next decade of his career will answer.
The Human Behind the Newsletter
The blog that became Noahpinion started during his PhD at Michigan on Blogger - the free Google blog platform that launched in 1999. He was not trying to build an audience. He was thinking out loud. When Paul Krugman started linking to it, and Brad DeLong started linking to it, he was surprised. The blog had found its readers before he had quite figured out what he was doing. Fifteen years later, 414,000 people subscribe to the Substack version of the same instinct.
He studied physics at Stanford in an era when physics graduates were being actively recruited by Wall Street and tech companies. He went to Japan instead. Then he got a PhD in economics - a discipline that, at its mathematical core, is closer to physics than most people realize. The career looks like a series of pivots. It might be better understood as a single consistent impulse: follow what's interesting, build the tools to understand it properly, then explain it to people who don't have those tools yet.
He has two rabbits. Their names are Cinnamon and Constable Giggles. He posts about them with the same earnestness he applies to geopolitics. They have attracted their own following among his readers. He is an advocate for rabbits as pets in general - they are, he will tell you, more intelligent and personable than their reputation suggests. This is not a branding strategy. It is just Noah Smith, who thinks carefully about economies and geopolitics, also finding rabbits genuinely delightful and seeing no reason to hide it.
Character
Fun Facts
Before economics, he was a physics major at Stanford. The quantitative rigor followed him to every career that came after.
He spent three years living in Japan before his PhD, which directly shaped his writing on Asian industrial policy and US-China relations.
His two rabbits - Cinnamon and Constable Giggles - have their own dedicated fans among his 414,000+ newsletter readers.
His blog started on Blogger during his PhD, when Blogger was a free Google product and "newsletter" meant something you printed. It found its audience anyway.