Viability Before Sustainability
Why long-term livability must come before green metrics
This essay is part of the Designing for Viability series, which explores how societies can remain viable beyond conventional sustainability frameworks.
“Sustainability” has become a reassuring word.
Cities, regions, and projects around the world proudly declare themselves sustainable — often backed by metrics, certifications, and carefully designed indicators. Carbon emissions are reduced. Energy efficiency improves. Environmental performance is quantified and reported.
And yet, many of these “sustainable” places are quietly losing their ability to exist.
Populations shrink. Infrastructure costs explode. Local economies hollow out. Communities age, fragment, and eventually dissolve. What remains may look sustainable on paper, but no longer functions as a living system.
This raises a simple but uncomfortable question:
Can something that is no longer livable truly be called sustainable?
Sustainability Is No Longer a Sufficient Question
Over the past decades, sustainability has gradually narrowed into a performance-based concept.
It is now commonly understood through indicators such as:
- environmental efficiency
- emissions reduction
- energy balance
- resource circulation
These indicators are important. There is no question about that. But they all share a hidden assumption: that the system being measured will continue to exist.
In practice, sustainability metrics rarely ask whether a place:
- can maintain its infrastructure over time
- can support its population structure
- can regenerate social and cultural functions
- can survive shocks such as disasters or demographic collapse
In other words, sustainability often evaluates how well a system performs, without asking whether the system itself is viable in the first place.
This is not a semantic distinction. It is a structural one.
A system that cannot continue to exist cannot be sustainable — by definition.
The Real Divide Is Not Urban vs. Rural —
It Is Density vs. Viability
Discussions about spatial sustainability are often framed as a simple opposition: urban versus rural.
Cities are portrayed as efficient, innovative, and sustainable. Rural areas are depicted as inefficient, declining, and dependent. Policy debates then revolve around how to “fix” rural spaces by making them more urban — or by consolidating them out of existence.
This framing is misleading.
The real issue is not whether a place is urban or rural, but whether its level of density matches the structure of the systems that support it.
Many contemporary societies are entering a phase of population adjustment. Birth rates decline, populations age, and growth assumptions embedded in infrastructure, finance, and governance begin to fail.
In this context, sparse spaces — areas with low population density — become the first places where systemic mismatch appears. Roads, water systems, healthcare, education, and energy networks were often designed for populations that no longer exist.
What breaks down is not sustainability in the environmental sense, but viability in the systemic sense.
Where Viability Breaks First: Sparse Spaces
Sparse spaces are often discussed as if they are simply “behind” cities — places that failed to modernize or attract growth.
In reality, they are facing a different problem.
They are required to maintain:
- large-scale infrastructure with shrinking populations
- public services with rapidly rising per-capita costs
- disaster preparedness with limited human and financial resources
Politically, many of these spaces are “sustained” through subsidies, transfers, and short-term interventions. But structurally, they are often not viable.
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This distinction matters.
A system can be sustained temporarily without being viable. It can survive on external support while losing its internal capacity to regenerate. Over time, such systems become increasingly fragile — especially in the face of disasters, economic shocks, or further demographic decline.
What we observe in sparse spaces today is not an environmental failure, but an early signal of systemic viability failure.
And this is precisely why they matter.
Sparse spaces are not backward anomalies. They are early warning systems for challenges that will eventually confront even the most successful cities.
This Is Not an Eco-village, a Resort, or a Compact City
When the idea of designing viable sparse spaces is introduced, it is often quickly mapped onto familiar categories.
Some assume it refers to eco-villages or permaculture communities. Others imagine high-end resorts or retreat destinations. Still others interpret it as another version of compact city policy applied to rural areas.
These interpretations are understandable — but they are inaccurate.
Eco-villages and lifestyle communities, many of which emerged from movements since the 1970s, often emphasize low-technology living, shared values, and ideological cohesion. They have generated important experiments and lessons. However, most are designed around specific worldviews, limited scales, and short- to medium-term horizons. They are not intended as broadly replicable models for sustaining human habitation across diverse regions and generations.
Resorts, including luxury villa areas, can coexist with nature and generate economic value. But they are structurally dependent on external demand and concentrated capital. They do not function as alternatives to urban-centric societies; they rely on them. In many sparse regions, resort-driven development also increases infrastructure costs and environmental burdens rather than resolving them.
Compact city strategies, meanwhile, aim to concentrate functions and populations to improve efficiency. While effective in some contexts, they are fundamentally urbanizing approaches. They implicitly abandon large surrounding areas by withdrawing investment, leaving the underlying viability problem of sparse spaces unresolved.
The concept discussed here (“Valley of the Wind”) belongs to none of these categories. It refers not to a place, but to a design logic for inhabiting sparse spaces.
(The diagram below is not a classification of places, but a map of design choices.)
What is proposed is not a lifestyle choice, not a retreat, and not an extension of urban logic. It is a design problem:
how to create sparse spaces that can remain livable, productive, and resilient over the long term.
The figure above situates this idea — referred to as the Valley of the Wind — among existing spatial models. Importantly, it shows not inevitable growth paths, but possible transitions created through design choices.
In this framework, sustainability refers not to environmental performance alone, but to long-term systemic viability.
Designing for Viability
Designing for viability begins with a shift in priorities.
Instead of asking how to optimize performance metrics, the first question becomes:
Can this place continue to exist as a living system?
This involves multiple, interdependent dimensions:
- infrastructure that matches population scale
- energy and water systems that can operate under disruption
- healthcare and education structures that function with limited density
- economic activities that are not purely extractive or subsidy-dependent
- cultural and intellectual environments that attract diverse encounters
Technology plays an important role here — but not as an end in itself. Past attempts at “smart cities” have shown that digital infrastructure alone does not create livable spaces. Connectivity, data, and automation are necessary conditions, not sufficient ones.
What matters is whether these tools are embedded within spatial, social, and ecological structures that make sense at low density.
In this sense, sparse spaces are not peripheral. They are laboratories.
They force us to confront questions that dense urban systems can temporarily avoid: limits, fragility, maintenance, and regeneration. Designing for viability in sparse spaces requires integrating multiple domains — environment, infrastructure, economy, culture, and technology — into a coherent whole.
This integration cannot be achieved through single solutions or short-term projects. It demands long time horizons and iterative redesign.
Viability Comes First
Sustainability remains an essential goal. Environmental responsibility is non-negotiable.
But sustainability without viability is an illusion.
A place that cannot maintain its population, infrastructure, and social systems over time cannot sustain anything — no matter how impressive its environmental metrics may be.
The idea of the Valley of the Wind is not a proposal for escaping cities, nor a nostalgic return to the past. It is an attempt to rethink how human societies can inhabit space under conditions of constraint, uncertainty, and change.
As populations stabilize or decline, and as shocks — climatic, demographic, or geopolitical — become more frequent, the question of viability will only grow more urgent.
Sparse spaces confront this reality first. That is why they matter.
Designing for viability is not about choosing where to live.
It is about deciding whether our spaces themselves can remain alive.
Kazuto Ataka is a professor at Keio University’s Shonan Fujisawa Campus and a senior strategist at LY Corporation.
He has been involved in national initiatives in Japan related to AI, data science, and innovation policy.
This essay is adapted from his 2025 book, Valley of the Wind: A Hope for Cultivating a Worthy Tomorrow (Eiji Press).
Note : A Japanese translation of this essay is available here: 存続なき持続はない — Viability before Sustainability https://kaz-ataka.hatenablog.com/entry/2026/01/04/202252 日本語訳はこちらで公開しています
