The Volume Problem — Summary
The map on Diane’s wall is from 1965. She put it there when she started as assistant city planner sixteen years ago and has not taken it down, partly because it would leave a large pale rectangle on the paint and partly because she finds it useful. Not for reference. For orientation. The city on the map had 60,000 people. Hers has 31,000. The buildings from the map are mostly still there.
This is not the story most people are telling about the built environment right now. The dominant version is about downtown office towers half-empty on Tuesdays, about companies renegotiating square footage, about conversion — the office becomes residential, the city’s inventory reshuffles over a decade into something appropriate for how people now work. That version has a solution built into it. It is the mild version, affecting the places with options.
The harder version is places like Diane’s, where the economic activity didn’t shift spatially. It ended.
The distinction matters more than it sounds. When work relocates, the city has an adaptation problem. When work disappears, the city has a demand reduction problem. The demand reduction problem has a different shape. The textile mill that closed in 1987, the distribution center that automated in 2018, did not relocate to another zip code. The work left the economy. The supply chain compressed around it. A facility that employed six hundred people at its peak employs forty-one today, and forty-one people do not need the lunch spots and dry cleaners and service providers and school capacity that six hundred needed. The downstream contraction is arithmetic. Diane’s city had eighteen restaurants on Main Street in 1988. It has four now. The four are not struggling. They are the correct number of restaurants for a downtown serving 31,000 people. The fourteen that closed were a census correction.
The built environment did not shrink with the census. Water systems, road networks, school facilities, civic buildings, the pipes under the streets: these were sized for a city expected to grow or at least hold. They are now maintained by a tax base that is 48 percent of what it was when the sizing decisions were made. The infrastructure inheritance is not a transition state. Three different city administrations have developed three different plans for returning the commercial downtown to vitality. The fourth is working on a fourth. Diane helps write them. She does not believe they will work, not because the people writing them are bad planners, but because the plans are trying to solve an adaptation problem that is actually a demand reduction problem, and adaptation plans cannot fix demand reduction.
The job loss from automation is the visible part. What is less visible is the ecosystem compression that follows. The people who still work in the automated facility no longer stop at the gas station on the way in. They no longer buy lunch from the cart outside the front gate. Their children no longer attend the schools built when this facility employed six hundred. The automated facility is more economically self-contained than the human facility it replaced. It buys power and bandwidth. It does not buy community. This compression is invisible in most accounts because it is distributed across every sector of the downstream economy rather than concentrated in any single one. The gas station doesn’t close because of automation. It closes because of a twenty-percent reduction in morning traffic, which nobody attributes to the facility upgrade three miles east that happened five years before the closure.
The global dimension rarely enters the domestic conversation. The industrial city infrastructure that Diane’s city built in the middle of the twentieth century is being built right now in cities across the developing world. Lagos. Dhaka. Provincial cities in Vietnam and Indonesia. Their planners are drawing on the American mid-century model because it worked, for a while, in the places that pioneered it. At the same time, in the cities that pioneered it, that model is becoming obsolete under the pressure of automation. The destination is reorganizing as the travelers are in transit.
Diane’s most difficult current assignment is a thirty-seven-page proposal recommending the consolidation of three elementary schools into one. The three buildings that would close were constructed in 1962, when the city’s school-age population was three times its current size. They are solid buildings. She has delayed the review for two years. The proposal is sound. The arithmetic is not ambiguous. But the case for closing them is not about the buildings. It is about the population they were built for, which is not coming back. The 1965 map is not a record of where the city is going. It is a record of what the city was built for, and the distance between those two things is the city planner’s actual working environment.
She has not taken the map down. The map of what the city was built for and the map of what the city is now belong on the same wall. You need both to understand what you are actually managing.