The book "Emergent Tokyo" applies the concept of emergent systems to understand the city's development. For decades, Western media has portrayed Tokyo as a city of wild, exotic chaos. However, a closer look reveals an emergent order that springs up from the micro-level choices of individual citizens in relatively free-form spaces. This bottom-up development has created the city's unique character.

The parts of Tokyo that have been top-down designed by the central government are generally the least Tokyo-esque. They're the places that feel like they could be in Cleveland or Milwaukee. It's the places that have been designed through the accumulated micro-choices of their residents that feel like the Tokyo we know and love. That Tokyo does not have a solitary master planner, does not have a solitary author.

This pattern is evident in Tokyo's history of rebuilding after catastrophic events, such as the 1923 earthquake and the 1945 firebombing. After World War II, the government lacked the funds for a master redevelopment plan. Instead, it focused on repairing major railways and roads, leaving citizens to rebuild their own neighborhoods. This resulted in the quiet, winding back streets that give parts of the city a village-like feel. Interestingly, even when rebuilt from scratch, these neighborhoods often re-formed along historical land use patterns, as if a reptile were regrowing a lost limb.

Another key feature of modern Tokyo, the yokocho alleyways, originated from the post-war black markets. These markets sprang up in response to rationing by the American military occupation. When the government decided to shut them down, it made a fateful decision. Instead of punishing the black marketeers, it recognized them as small entrepreneurs. The government built tiny stalls, distributed them by lottery, and granted property rights. These stalls became the foundation for today's famous drinking and entertainment alleys, such as Golden Gai, a district with 270 micro-bars in a single city block.

Tokyo's Yokocho are small alleyways filled with tiny establishments, some with as few as five or ten seats and perhaps a small second floor. The owners deeply personalize these spaces, customizing them with their own unique decor, visual imagination, and aesthetic tastes. This specialization extends to the food, with each place offering a distinct menu.

The scale of this is massive. Per capita, Tokyo has at least five times the number of restaurants as New York City, and potentially over ten times more, as many of these small spots may not be officially counted. For a tourist or resident, there is an incredible romance and serendipity in exploring these alleys, finding a setting with just the right decor or music to match a particular mood.

However, despite the appeal, it must be very difficult to make a living with only a handful of customers at a time. The environment is also extremely competitive due to the sheer number of establishments.

The retail environment in Tokyo is characterized by shops that are small, competitive, and have a unique identity. This distinctiveness is very appealing to customers.

However, this poses a challenge for entrepreneurs. There isn't a culture of agglomeration where a business owner might buy adjacent properties to expand. For example, a restaurant might remain very small instead of growing to have more seating. Joe McReynolds confirms this is a major trend in the city.

The unique, human-scale nature of Tokyo's small bars and businesses is not a result of aesthetics or culture, but of microeconomics driven by public policy. A tourist once wrote on the wall of a perfectly mediocre Tokyo micro-bar, "This is better than all the bars of San Francisco." This captures the visceral, emotional response people have to these intimate spaces, which are largely missing from American cities because the economics do not support them.

These are solvable problems. With smart policy tweaks, American cities could foster similar micro-businesses. Joe McReynolds provides a friend's experience as an example: a Japanese American woman who left New York finance to open a small bar in Tokyo. Her all-in cost was only about $1,600. This is possible because liquor licenses are inexpensive and easy to obtain, health inspections are infrequent, and small businesses can keep the sales tax they collect up to a certain threshold.

The system is designed to support sole proprietors. Favorable income tax policies, universal healthcare, and affordable education lower the personal financial risk of starting a small venture. Crucially, Tokyo's zoning is fundamentally different from the hyper-specific zoning in the U.S. It is a hierarchical or inclusive system based on nuisance levels. This means a small bar, restaurant, or boutique is allowed in nearly every unit in the city. Even the most residential zones are actually mixed-use, allowing a homeowner to convert their ground floor into a small shop. This leads to a different kind of landlord, often an individual who values having nice people and businesses in their neighborhood, rather than a corporation focused solely on maximizing profit. This old model of shopkeepers living above their shops is still common and completely changes the character of the city.

A stark contrast exists between a high-finance life in New York and running a small, intimate bar in Tokyo. In Tokyo, many proprietors of small bars and restaurants find pleasure in the nightly social interactions with their customers. They cultivate a social circle that has both consistency with regulars and variety with new faces. This approach differs from the common American drive for a bigger footprint, higher volume, and greater profit. In Tokyo, many creative people seem content with a slightly lower standard of living in exchange for richer interactions.

This observation is accurate, though it's important to note a bifurcation in Tokyo life. The classic 'salaryman' stereotype—working long hours like 9 to 8 and living in a modern high-rise—still exists. However, the percentage of Tokyo urbanites fitting this model is shrinking with each generation. Conversely, the percentage living a more creative, passion-focused life centered on community over profit is growing. Both lifestyles coexist, sometimes in a symbiotic relationship within 'pocket neighborhoods.' These areas feature intimate, low-rise communities ringed by modern offices. The office workers provide a steady stream of customers for the small, mom-and-pop eateries and bars.

This shift is supported by public policy and is seen as a great way to live. There is even a Japanese phrase for this phenomenon: 'datsusara'.

Datsusara literally means escaped salaryman. Someone who got off, get off the treadmill. The rat race to live their dream. And the Datsusara are a growing phenomenon.

The small, intimate bars of Tokyo share similarities with other vibrant urban spaces, like the Mahane Yehuda market in Jerusalem or the laneways of Melbourne, Australia. Joe McReynolds notes this pattern highlights that Tokyo's model is not entirely unique and can be seen in various cities. In Jerusalem's market at night, dozens of small bars blast their own music, creating a lively, if cacophonous, atmosphere.

A key question is how the customer culture works in places with such limited seating. In Israel, patrons tend to linger, which can be difficult for a business with only five chairs. In Tokyo, the culture varies significantly from bar to bar. Success depends on what the Japanese call 'kukiyomi,' which literally means 'reading the air.' It's a form of situational awareness and emotional intelligence that helps you sense if a particular spot is welcoming to you.

Many establishments cultivate a culture of regulars. Some places might display a 'members only' sign, but this isn't a formal membership. It's more of an introduction system. Joe explains the idea is you can visit if someone who is already a regular brings you. After that initial visit, you can come on your own. This system helps acclimate new people into the social fabric, contrasting with the 'velvet rope' exclusivity common in cities like Berlin or New York. This can be challenging for tourists who may not speak the language or understand local customs, such as the table charge, which is sometimes mistaken for a scam.

There's a symbiotic relationship between owners and their regulars. Bars are often decorated with small gifts and trinkets, or 'tchotchkes,' that regulars bring back from their travels. This can lead to amusing social dilemmas.

I was talking to a Tokyo bar owner recently about what do you do if a beloved regular brings you a tchotchke and you're just looking at it like, oh man, this thing is ungodly ugly. But I have to show gratitude. I got to put it up somewhere. It's like, you know, the little like Larry David Curb Your Enthusiasm kind of scenarios of life with your regulars.

When a small restaurant becomes popular, they don't typically raise prices. There is significant 'price stickiness,' and raising prices, even for inflation, is culturally resisted. Instead, a popular spot might develop a queue or a reservation system, though they are careful not to lose their regular clientele to temporary tourist traffic. Other strategies for handling success include opening sister shops. Joe mentions a noodle master who became so popular he now wakes up early to make noodles by hand for his three shops, all located in the same district.

Tokyo's urban landscape is defined by Zakyo buildings, which are essentially vertical versions of the city's horizontal alleyways. These are tall, narrow buildings where each floor can house a different bar, restaurant, or micro-business. This is what creates the iconic neon-lit nightlife scenes often associated with Tokyo. This model contrasts sharply with American cities, where retail is typically confined to the first or second floor, with offices or apartments above. American signage regulations both reflect and enforce this ground-level focus.

A key difference lies in building access and regulations. In Tokyo, it's common to find exterior stairwells that lead directly from the street to upper floors, along with a single elevator. This is a major regulatory hurdle in the United States, according to Joe McReynolds. He notes that the debate over single versus double stairwells is a primary reason this style of building isn't replicated in most US cities. While New York City has some examples, especially in Asian diaspora communities, it's not as prevalent as in Tokyo. A developer Joe spoke with highlighted a cultural challenge as well.

Well, how do we teach Americans to look up? That's a challenge, but I think over time a surmountable one. I think if the regulations shift, the culture will shift.

Perhaps the most critical element of Tokyo's urbanism is the lack of a minimum unit size. This rule, combined with flexible zoning that allows the ground floor of a residential building to become a public-facing micro-space, creates a nearly endless supply of adaptable commercial spots throughout the city. Joe identifies this as Tokyo's "secret sauce" and the most important lesson for other cities.

If there was any one lesson, one thing to take away from Tokyo's secret sauce for other cities is how is your city producing flexible micro spaces? And if it's not, what can you change to improve that? I think really that fundamentally starts with zoning and minimum unit lot size regulations.

In 1960, Tokyo and New York City were roughly the same size, with populations around 15 to 16 million people. Today, their paths have diverged dramatically. New York has grown by about a third to 20 million, while Tokyo has surged to approximately 38 million people.

In 1960, one of those two cities, Manhattan or Tokyo, was 15 million people and was 16 million. Essentially the same size. Today New York City has 20 million people. So it's increased by a factor of about a third. To my surprise, I did not expect this. I knew it was bigger, but Tokyo today has about 38 million people. Stunning.

This difference isn't a matter of popularity. The key factor is housing construction. New York's population growth has been constrained because few new housing units have been built. The regulatory environment makes it difficult to expand housing supply. In contrast, Tokyo has been much more aggressive, with a regulatory climate far friendlier to building and increasing supply, allowing the city to accommodate its massive growth.

More than half of Tokyo's residents live in commuter rail suburbs, not the urban core. Joe McReynolds explains that this is shaped by a railway network that is mostly in private hands. About eight or nine private railway operators also function as real estate developers. They build shopping malls over their stations, develop the surrounding commuter communities, and even establish resorts at the end of their lines.

This strategy is known as the Hankyu model, which started in Kyoto over a century ago. It proved resilient when car culture surged in the 60s and 70s, as the companies pivoted more toward their real estate and commercial assets. While this model is being explored in places like Florida with Brightline, it's hard to copy because the Japanese companies bought up the necessary land when it was cheap farmland a century ago.

Commutes from these suburbs are manageable, typically 30 to 45 minutes, due to express trains that skip many stations. Tokyo is fundamentally a city surrounded by massive rail suburbs, unlike American cities, which are built around car suburbs. This distinction changes everything from economics to patterns of life.

A critical factor enabling housing development is that much of it is done "by-right." This means if you own the land, you can build housing on it by filing the proper forms, without lengthy negotiations. This contrasts sharply with the American system.

In American cities if something is not by-right, for example, in San Francisco, it can be years of meetings with local residence groups and often the local neighborhood groups, you name it. Just local rent-seeking politicians, all the different stakeholders that can potentially veto your project.

This costly and uncertain process in the U.S. often means only highly profitable luxury projects get built. Japan's straightforward, national-level zoning rules allow for much more by-right construction, resulting in a simpler process and a greater supply of housing.

Venice is the opposite of Tokyo. While Tokyo feels like a city where anything is possible, Venice is a place of restrictions. For example, two people were recently arrested and expelled from the city just for swimming in a canal. The buildings themselves reflect this stasis, remaining unchanged for decades, centuries, or even 500 years. Their crumbling facades are considered part of the city's charm.

Despite this, Venice shares some of the charm of Tokyo's Yokocho alleyways with its small, winding streets and lack of large retail stores. There's a strange paradox in the shopping scene. Many stores cater to tourists, selling the exact same masks, mugs, and scarves. It's a mystery how they stay in business, as few people seem to buy anything. However, about every fourth or fifth shop is something unique, like an artist's studio, a bookbinder, or a coffee shop. This creates a sense of serendipity amid the museum-like atmosphere.

This observation extends to most of Italy. Cities like Rome and Verona are also fantastic museums for tourists. This creates an understandable and inevitable tension. Residents are increasingly unhappy that their charming cities are primarily enjoyed by outsiders, even though many of them rely on tourism dollars to live.

A tension exists between preserving a city's charm and the vitality it needs to stay alive, particularly with rising tourism which can create a "museum-like phenomenon." Tokyo has mostly avoided this, but still faces this challenge. Joe McReynolds notes that Venice has been a fascinating point of contrast for Japanese urbanists for centuries. He explains that Tokyo, like Venice, is a city of waterways, but streets and freeways were built over them over time. A movement is now underway to move some of this infrastructure underground and restore Tokyo as a Venetian-style water city.

The common view of historic preservation is often focused on buildings. By this measure, a city like Tokyo is considered one of the worst in the world, as it has almost no buildings older than a century. However, if preservation is defined by maintaining communities and their rhythms of life, Tokyo is one of the best cities globally.

For example, the gritty, culturally vibrant New York of the 1960s and 70s, often depicted in movies, largely no longer exists. Iconic venues like CBGB's are gone, and the communities that made the city so generative have been displaced. What remains of that era often feels more like a tourist stop than a living community.

In contrast, many of Tokyo's neighborhoods from the 1960s and 70s are still intact. The buildings may have changed, but the communities, people, and rhythms of life persist with much less displacement. This raises a fundamental question about what is more important to preserve: the buildings or the people.

Venice, as experienced by tourists, is not a living city for Venetians. Most locals live in drab, gray suburbs, while the historic center functions more like a museum. While it may be one of the most beautiful cities in the world, its charm comes at a cost.

It's Disneyland is the problem. Because it's not a... it's a museum. It's been preserved with a certain amount of charm, but it's not really a real city.

In contrast, Tokyo offers a model of coexistence. The city demonstrates a synthesis where massive redevelopment and gleaming skyscrapers exist alongside traditional, labyrinthine alleyways filled with small, family-owned businesses. This is partly due to strong property rights. Joe McReynolds explains that in Tokyo, the past becomes a kind of subculture; it shrinks but does not disappear. Because Tokyo doesn't suffer from the same housing scarcity as cities like New York or San Francisco, it can operate from an abundance mindset, avoiding zero-sum choices between preserving heritage and building new homes.

American cities face a different reality, where steadily rising housing prices are a major detriment to human flourishing. It has become incredibly difficult for people to move to a big city and build a life. The problem largely stems from restrictions on what can be built and how long the process takes. Joe argues for two fundamental changes to make American cities better: make it easy to build housing, and make it easy for people to use their own spaces for small, local businesses like coffee shops or bookstores.

We should structure American cities so that people with a wider range of dreams can find their place there, can find a decent way to live there, and that then they can share their dreams with us, the public. In a micro commercial way, because that changes the whole emotional color palette of the city.

Currently, American creativity is often priced out of cities and forced online. Allowing more micro-commercial activity would change the feel of a neighborhood, creating more open doors for strangers and fostering a sense of community and belonging.