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8 Special report Japan The Economist December 11th 2021 Tokyo The big city “Only thumbs stood up from the flatlands—the chimneys of bath­houses, heavy house safes and an occasional stout building with heavy iron shutters,” wrote Russell Brines, the first foreign journalist to enter Tokyo after the second world war. From a pre­war population of 7m people, only 3.5m were left. As Tokyo rebuilt, the city was rife with violence and slum­like living condi- tions. Ahead of the 1964 Olympics, officials rushed to spruce up the infrastructure and clean up the streets, clamping down on then­widespread practices such as public urination. Tokyo is now the world’s largest city, with 37m residents in the metropolitan area and 14m in the city proper. It is also one of the world’s most liveable, with punctual public transport, safe neigh- bourhoods, clean streets and more restaurants and Michelin stars than any other. In the liveability index of the Economist Intelli- genceUnit, our sister group, Tokyo comes jointfourth, butits pop- ulation is largerthan the combined populations of the others (Ad- elaide, Auckland, Osaka and Wellington). “It’s possible to have a liveable city at any scale—Tokyo proves that,” saysGabriel Metcalf, at Committee for Sydney, an Australian think­tank. It offers lessons to developing cities elsewhere. In1950, 30% of the world’s population was urban; by 2050, 68% will be. Much re- maining growth will be in megacities of more than 10m in Asia and Africa. There are 33 such cities now; by 2030 there will be 43. As Tokyo grapples with what to do when cities age and shrink, it can also serve as a case study for otherrich cities. Tokyo’s liveability is a product of planning’s successes but also its failures, argues Jordan Sand of Georgetown University. One success was public transport. After the Meiji restoration, the gov- ernment put rail ahead of roads, expanding networks through the city and then underground. Even as large firms in America built headquarters in suburbs, in Japan they clustered around transport hubs, incentivising the use of trains and subways, says Okata Jun- ichiro of the University of Tokyo. That helped make Tokyo poly- centric, with many hubs, not one. Around those hubs grew dense, mixed­use neighbourhoods. Thatwas the planning “failure”.Afterthewar, city planners sought Perhaps surprisingly, the world’s biggest city is also one of its most liveable to impose zoning as in the West, as they had after the Great Kanto Earthquake of 1923. But the government’s resources were too lim- ited and Tokyo’s growth too rapid to control the process. Japan in- stead developed lax zoning codes, which allow pretty much any- thing to be built, rather than prescribing what is permitted. His- torically, this model “was part of a modernist ethos to separate functions, to say work happens here, living happens here”, ex- plains Mohsen Mostafavi of Harvard’s Graduate School of Design. In recent years there has been a “paradigm shift” in how Tokyo is perceived, says Christian Dimmer of Waseda University, Tokyo. Scholars find evidence that, as Tokyo grew, neighbourhoods de- veloped gradually, and became more equal, rather than stratified. In one study, Benjamin Bansal, a Bangkok­based independent re- searcher, shows that differences in living space per head and other indicators between the city’s 23 central wards have declined dur- ing Tokyo’s rapid growth from 1955 to 1975. Activists in the West al- so note that Tokyo has avoided the housing crises of many rich countries; some reckon permissive zoning made a big difference. What once were problems now seem virtues. “[Mixed­use neighbourhoods] have proved very resilient,” says Murayama Aki- to at the University of Tokyo. Consider the work of Jane Jacobs, an American urbanist who railed against planning in the 1960s. “Intricate minglings of different uses in cities are not a form of chaos,” she wrote in “The Death and Life of Great American Cit- ies”. “On the contrary, they represent a complex and highly developed form of or- der.” Tokyo has many qualities she cham- pioned, says Mr Dimmer: “Social capital, eyes on streets, self­management and self- government, people of many walks of life rubbing elbows in public spaces, a mix of old and new buildings.” The pandemic underlined the value of such qualities. “We be- came aware ofwhatis there in the square mile around us,” says Ra- hul Srivastava, co­founder of Urbz, a Mumbai­based research col- lective. For Mr Srivastava and Matias Echanove, another co­foun- der, such qualities make Tokyo a model for megacities. Their study of Tokyo informs their work in Dharavi, a poor part of Mumbai, where they advocate what Mr Echanove calls a shift from a “less is more” ethos that sees poorer neighbourhoods as problematic dis- tricts to be razed and rebuilt, to a “mess is more” ethos that em- braces gradual, in situ development. Tokyo is still growing, but it is also ageing and its population is projected to decline after 2025. “The urbanisation process is fi­ nite,” argues Andre Sorensen of Toronto University. “Japan is the first country to see that.” The shrinkage has already begun in To- kyo’s suburbs, where developers once attracted hordes of baby- boomers to freshly built housing complexes. Now, the boomers are getting old and their children have left. Vacant properties, known as akiya, are proliferating. Accessing public transit has be- come more difficult for the elderly. Technology can help. As Tokyo thinks about “downsizing” pub- lic services, big data will matter, says Koike Yuriko, its governor. The city already has granular readings from smart water meters: during football matches at the Olympics, officials could tell when half­time hit from the uptick in flushing toilets. Such data may help make water provision more efficient, and could even be used to flag potential problems with elderly residents who live alone, according to Ms Koike. Some suburban communities have tried to attract younger res- idents with promises of cheap property and plentiful space. A handful of developers have shifted to trying to revive such areas. Butthe sad reality is that some suburbs will survive and others de- cay. That process is even more obvious in distant regions. n Tokyo’s liveability is a product of planning’s successes but also its failures Where the living is easy 012