Jane Jacobs, OC, O.Ont (May 4, 1916 – April 25, 2006) was an American-born Canadian urbanist, writer and activist. The Order of Canada is the highest civilian honour within the Canadian system of honours, with membership awarded to those who exemplify the order's Latin This article is about the Canadian order Oont is Urdu for " Camel " and was adopted as an Anglo-Indian term for the animal during British Events 1256 - The Augustinian monastic order is constituted at the Lecceto Monastery when Pope Alexander IV Year 1916 ( MCMXVI) was a Leap year starting on Saturday (link will display the full calendar of the Gregorian calendar (or a Leap year Events 1607 - Eighty Years' War: The Dutch fleet destroys the anchored Spanish fleet at Gibraltar. Year 2006 ( MMVI) was a Common year starting on Sunday of the Gregorian calendar. The United States of America —commonly referred to as the A writer is anyone who creates a written work although the word usually designates those who write creatively or professionally as well as those who have written in many different forms Activism, in a general sense can be described as intentional action to bring about social or political change She is best known for The Death and Life of Great American Cities (1961), a powerful critique of the urban renewal policies of the 1950s in the United States. The Death and Life of Great American Cities, by Jane Jacobs, is arguably the most influential book written on Urban planning in the 20th century Urban Renewal (similar to Urban Regeneration in British English) is a controversial U The book has been credited with reaching beyond planning issues to influence the spirit of the times. "Jacobs came down firmly on the side of spontaneous inventiveness of individuals, as against abstract plans imposed by governments and corporations," wrote Canadian critic Robert Fulford. Alternate use see Robert Fulford (croquet player for the English croquet player "She was an unlikely intellectual warrior, a theorist who opposed most theories, a teacher with no teaching job and no university degree, a writer who wrote well but infrequently. "
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Jane Butzner was born in Scranton, Pennsylvania, the daughter of a doctor and a former schoolteacher and nurse, who were Protestant in a Catholic town—adherents of a minority religion. The Commonwealth of Pennsylvania ( often colloquially referred to as PA (its abbreviation by natives and Northeasterners is a state located in the Northeastern After graduating from Scranton's Central High School, she took an unpaid position as the assistant to the women's page editor at the Scranton Tribune. The Times-Tribune is a morning newspaper serving the Scranton Pennsylvania area A year later, in the middle of the Great Depression, she left Scranton for New York City. The City of New York
During her first several years in the city, Jacobs held a variety of jobs, working mainly as a stenographer and freelance writer, often writing about working districts in the city. These experiences, she later said, ". . . gave me more of a notion of what was going on in the city and what business was like, what work was like. " Her first job was for a trade magazine, first as a secretary, then as an editor. She also sold articles to the Sunday Herald Tribune. She then became a feature writer for the Office of War Information. The United States Office of War Information (OWI was a US government agency created during World War II to consolidate government information services While working there she met an architect named Robert Hyde Jacobs whom she married in 1944. Together they had two sons and a daughter.
She studied at Columbia University's extension school (now the School of General Studies) for two years, taking courses in geology, zoology, law, political science, and economics. Columbia University is a private University in the United States and a member of the Ivy League. The School of General Studies, commonly known as General Studies or simply GS, is Columbia University 's undergraduate college for Non-traditional Geology (from Greek γη gê, "earth" and λόγος Logos, "speech" lit Zoology (from Greek ζῷον, zoon, "animal" + λόγος, " Logos " "knowledge" is the branch of Law is a system of rules enforced through a set of Institutions used as an instrument to underpin civil obedience politics economics and society Political science is a branch of Social sciences that deals with the theory and practice of Politics and the description and analysis of Political systems Economics is the social science that studies the production distribution, and consumption of goods and services. About the freedom to study her wide-ranging interests, she said:
| “ | For the first time I liked school and for the first time I made good marks. This was almost my undoing because after I had garnered, statistically, a certain number of credits I became the property of Barnard College at Columbia, and once I was the property of Barnard I had to take, it seemed, what Barnard wanted me to take, not what I wanted to learn. Barnard College is a women's liberal arts college founded in 1889 Fortunately my high school marks had been so bad that Barnard decided I could not belong to it and I was therefore allowed to continue getting an education. [1] | ” |
On March 25, 1952, Jacobs responded to Conrad E. Snow, chairman of the Loyalty Security Board at the United States Department of State. In her foreword to her answer she said:
| “ | The other threat to the security of our tradition, I believe, lies at home. It is the current fear of radical ideas and of people who propound them. I do not agree with the extremists of either the left or the right, but I think they should be allowed to speak and to publish, both because they themselves have, and ought to have, rights, and once their rights are gone, the rights of the rest of us are hardly safe. . . [2] | ” |
Opposing expressways and supporting neighborhoods were common themes in her life. An expressway is a Divided highway for high-speed traffic with at least partial Control of access. A neighbourhood or neighborhood (see spelling differences) is a geographically localised Community within a larger City, Town or In 1962, she was the chairperson of the Joint Committee to Stop the Lower Manhattan Expressway, when the downtown expressway plan was killed. The Lower Manhattan Expressway (also known as the Canal Street Expressway or LOMEX) was a controversial plan for an Expressway through lower Manhattan She was again involved in stopping the Lower Manhattan Expressway and was arrested during a demonstration on April 10, 1968. Jacobs opposed Robert Moses, who had already forced through the Cross-Bronx Expressway and other roadways against neighborhood opposition. Robert Moses ( December 18 1888 – July 29 1981) was the "master builder" of mid-20th century New York City, Long The Cross Bronx Expressway is a major expressway ( Freeway) in the New York City borough of The Bronx. A late 1990s Public Broadcasting System (PBS) documentary series on New York's history devoted a full hour of its fourteen-hours to the battle between Moses and Jacobs. The Public Broadcasting Service ( PBS) is a Non-profit Public broadcasting Television service with 354 member TV stations in the [3] The earlier, highly critical Moses biography The Power Broker does not mention her and gives only passing mention to this event. The Power Broker Robert Moses and the Fall of New York is a Pulitzer Prize -winning 1974 Biography of Robert Moses, " New York City
In 1968, Jacobs moved to Toronto, where she lived until her death. Toronto (təˈrɒntoʊ colloquially pronounced or) is the largest city in Canada and is the provincial capital of Ontario She decided to leave the United States in part because of her objection to the Vietnam War and worry about the fate of her two draft-age sons. The Vietnam War, also known as the Second Indochina War, or the Vietnam Conflict, occurred in Vietnam, Laos and Cambodia Conscription (also known as the draft, the call-up or national service) is a general term for involuntary labor demanded by some established authority She and her husband chose Toronto because it was pleasant and offered him work opportunities. She quickly became a leading figure in her new city and helped stop the proposed Spadina Expressway. The Spadina Expressway was proposed in the mid-1960s as part of a network of Freeways in Metropolitan Toronto. A frequent theme of her work was to ask whether we are building cities for people or for cars. She was arrested twice during demonstrations. [4] She also had considerable influence on the regeneration of the St. Lawrence neighborhood, a housing project regarded as a success. The St Lawrence neighbourhood of Toronto, Ontario, Canada although still part of Downtown Toronto, was the actual downtown centre and city hall Public housing is a form of Housing tenure in which the property is owned by a Government authority which may be central or local She became a Canadian citizen in 1974, and she later told writer James Howard Kunstler that dual citizenship was not possible at the time, implying that her US citizenship was lost. James Howard Kunstler (born 1948 is an American Author, Social critic, and Blogger who is perhaps best known for his book The
In 1980, she offered an urbanistic perspective on Québec's sovereignty in her book The Question of Separatism: Quebec and the Struggle over Separation. Quebec (kwɨˈbɛk
Jacobs was an advocate of a Province of Toronto to separate the city proper from Ontario. The term Province of Toronto has two senses one political the other ecclesiastical Jacobs said, "Cities, to thrive in the 21st century, must separate themselves politically from their surrounding areas. "
She was selected to be an officer of the Order of Canada in 1996 for her seminal writings and thought-provoking commentaries on urban development. The Order of Canada is the highest civilian honour within the Canadian system of honours, with membership awarded to those who exemplify the order's Latin The Community and Urban Sociology section of the American Sociological Association awarded her its Outstanding Lifetime Contribution award in 2002.
In 1997, the City of Toronto sponsored a conference titled "Jane Jacobs: Ideas That Matter", which led to a book by the same name. At the end of the conference, the Jane Jacobs Prize was created. It includes an annual stipend of $5,000 for three years to be given to "celebrate Toronto's original, unsung heroes — by seeking out citizens who are engaged in activities that contribute to the city's vitality". [5]
Jacobs never shied away from expressing her political support for specific candidates. She backed an ecologist, Tooker Gomberg, in Toronto's 2000 mayoralty race (he lost), and was an adviser to David Miller's campaign in 2003, at a time when he was seen as a longshot (he won). Tooker Gomberg ( August 12, 1955 &ndash March 3 or March 4, 2004) was a Canadian politician David Raymond Miller (born December 26, 1958) is a Canadian politician Longshot is a fictional Marvel Comics Superhero best known as a member of the X-Men.
She died in Toronto Western Hospital at the age of 89, on 25 April 2006, apparently of a stroke. The Toronto Western Hospital is located at the corner of Bathurst Street and Dundas Street West in Toronto, Canada. A stroke is the rapidly developing loss of brain functions due to a disturbance in the blood vessels supplying blood to the brain She was survived by a brother, James Butzner; two sons, James and Ned, and a daughter, Burgin Jacobs; by two grandchildren and two great-grandchildren. Upon her death her family's statement noted:
As a tribute to Jacobs, the Rockefeller Foundation announced on February 9, 2007 the creation of the Jane Jacobs Medal, "to recognize individuals who have made a significant contribution to thinking about urban design, specifically in New York City. The Rockefeller Foundation (RF is a prominent Philanthropic organization and Private foundation based at 420 Fifth Avenue New York City. "[7] From the mid 1950s to the mid 1960s, the foundation's Humanities Division sponsored an "Urban Design Studies" research program, of which Jacobs was the best known grantee. [8]. In September 2007 the Rockefeller Foundation awarded Barry Benepe, co-founder of NYC's Green Market program and a founding member of Transportation Alternatives, with the inaugural Jane Jacobs Medal for Lifetime Leadership and a $100,000 cash prize. The inaugural Jane Jacobs Medal for new Ideas and Activism was awarded to Omar Freilla, the founder of Green Worker Cooperatives in the South Bronx; Mr. Freilla donated his $100,000 to his organization.
In May of 2008, the Rockefeller Foundation announced that Peggy Shepard, executive director of West Harlem Environmental Action, would receive the 2008 Jane Jacobs Medal for Lifetime Leadership and Alexie Torres-Fleming, founder of Youth Ministries for Peace and Justice, would receive the award for New Ideas and Activism. Both women will receive their medals and $100,000 awards at a dinner ceremony in September 2008 in New York City.
The City of Toronto proclaimed Friday May 4, 2007 as Jane Jacobs Day in Toronto. Two dozen free walks around and about Toronto neighbourhoods, dubbed 'Jane's Walk', were held on Saturday May 5, 2007. A Jane's Walk event was held in New York in on September 29 and 30, 2007 and, for 2008, the event has spread to eight cities and towns across Canada.
She was also famous for her saying, "Eyes on the Street".
The Municipal Art Society of New York has partnered with the Rockefeller Foundation to host an exhibit focusing on "Jane Jacobs and the Future of New York" which opened at the MAS on September 26, 2007. The Municipal Art Society of New York (MAS is a nonprofit membership organization which advocates for excellence in Urban design, Urban planning, Contemporary The Rockefeller Foundation (RF is a prominent Philanthropic organization and Private foundation based at 420 Fifth Avenue New York City. The exhibit aims to educate the public on her writings and activism and uses tools to encourage new generations to become active in issues involving their own neighborhoods. An accompanying exhibit publication includes essays and articles by such architecture critics, artists, activists and journalists as Malcolm Gladwell, Reverend Billy, Robert Neuwirth, Tom Wolfe, Thomas de Monchaux, and William McDonough. Malcolm Gladwell (born September 3, 1963) is a United Kingdom -born Canadian -raised Journalist and author now based in New York City The Church of Stop Shopping is an activist performance group based in New York City, led by Reverend Billy, the stage name of Bill Talen Robert Neuwirth is an American Journalist and author He wrote Shadow Cities A Billion Squatters A New Urban World, a book describing his experiences living in Thomas Kennerly Wolfe Jr (born March 2, 1931 in Richmond, Virginia) known as Tom Wolfe, is a Best-selling William Andrews McDonough (b February 21, 1951, Hong Kong) is an American Architect and founding principal of William McDonough [9] Many of these contributors are participating in a series of panel discussions on "Jane Jacobs and the Future of New York" taking place at venues across the city in Fall, 2007. [10]
Jane Jacobs spent her life studying cities. Her books include:
The Death and Life of Great American Cities is her single-most influential book and possibly the most influential American book on urban planning and cities. The Death and Life of Great American Cities, by Jane Jacobs, is arguably the most influential book written on Urban planning in the 20th century Widely read by both planning professionals and the general public, the book is a strong critique of the urban renewal policies of the 1950s, which, she claimed, destroyed communities and created isolated, unnatural urban spaces. Jacobs advocated dense, mixed-use neighborhoods and frequently cited New York City's Greenwich Village as an example of a vibrant urban community. The City of New York Greenwich Village (ˌgrɛnɪtʃ ˈvɪlɪdʒ often simply called the Village, is a largely residential area on the west side of downtown (southern Manhattan
Robert Caro has cited it as the strongest influence on The Power Broker, his legendary biography of Robert Moses. Robert Allan Caro (born October 30, 1935) is a Biographer most noted for his studies of United States political figures Robert Moses The Power Broker Robert Moses and the Fall of New York is a Pulitzer Prize -winning 1974 Biography of Robert Moses, " New York City
Beyond the practical lessons in city design and planning that Death and Life offers, the theoretical underpinnings of the work challenge the modern development mindset. Jane Jacobs adheres to inductive, nearly scientific, reasoning. Moreover, she is open to anecdotal evidence coming to bear on what has been induced from harder data.
The thesis of this book is that cities are the primary drivers of economic development.
Jacobs' main argument is that all economic growth derives from urban import replacement. Import replacement is when a city starts producing locally goods that it formerly imported, e. g. , Tokyo bicycle factories replacing Tokyo bicycle importers in the 1800s. Jacobs claims that import replacement builds up local infrastructure, skills, and production. Jacobs also claims that the increased produce is exported to other cities, giving those other cities a new opportunity to engage in import replacement, thus producing a positive cycle of growth.
In an interview with Bill Steigerwald in Reason Magazine (06/01), Jacobs said that if she is remembered for being a great intellectual she will be remembered not for her work concerning city planning, but for the discovery of import replacement. Reason is a libertarian monthly magazine from the Reason Foundation. However, her ideas are similar to those that had begun to be advanced earlier about import substitution by scholars such as Andre Gunder Frank. Import Substitution Industrialization (also called ISI) is a Trade and economic Policy based on the premise that a Country should Andre Gunder Frank ( Berlin, February 24, 1929 &ndash Luxembourg, April 23, 2005) was a German economic historian and sociologist
The book also advances a new argument that cities preceded agriculture, rather than the reverse, which was archaeologists' previous belief. Archaeologists believed that cities required a food surplus to support specialist workers, thus requiring an existing agricultural economy. Jacobs claims that instead, cities already existed as trading posts, and discovered agriculture through trade in wild animals and grains, and then disseminated agriculture to rural areas.
Beginning with a concise treatment of classical economics, this books challenges one of the fundamental assumptions of the greatest economists. Classical (and Neo-classical) economists consider the nation-state to be the main player in macroeconomics. Macroeconomics is a branch of Economics that deals with the performance structure and behavior of a national or regional Economy as a whole Jacobs makes a forceful argument that it is not the nation-state, rather it is the city which is the true player in this world wide game. She restates the idea of import replacement from her earlier book The Economy of Cities, while speculating on the further ramifications of considering the city first and the nation second, or not at all.
"In 1979 and 1980, Jane Jacobs reached the conclusion that Quebec sovereignty was necessary because of her understanding of how cities emerge and how they influence the development of nations. She looked specifically at Montreal and Toronto and foresaw the regionalization of Montreal, making it into a sort of feeder for Toronto as regional airports are to a hub. 'In sum,' she wrote, 'Montreal cannot afford to behave like other Canadian regional cities without doing great damage to the economic well-being of the Quebecois. It must instead become a creative economic centre in its own right… Yet there is probably no chance of this happening if Quebec remains a province. '" [11]
Systems of Survival: A Dialogue on the Moral Foundations of Commerce and Politics moves outside of the city, studying the moral underpinnings of work. Systems of Survival is a 1992 book by Jane Jacobs describing two distinct ethical systems or systems of survival as she calls them A moral is a message conveyed or a lesson to be learned from a story or event As with her other work, she used an observational approach. This book is written as a Platonic dialogue. Biography Early life Birth and family Plato was born in Athens Greece It appears that she (as described by characters in her book) took newspaper clippings of moral judgements related to work, collected and sorted them to find that they fit two patterns of moral behaviour that were mutually exclusive. She calls these two patterns "Moral Syndrome A", or commercial moral syndrome and "Moral Syndrome B" or guardian moral syndrome. She claims that the commercial moral syndrome is applicable to business owners, scientists, farmers, and traders. Similarly, she claims that the guardian moral syndrome is applicable to government, charities, hunter-gatherers, and religious institutions. She also claims that these Moral Syndromes are fixed, and do not fluctuate over time.
It is important to stress that Jane Jacobs is providing a theory about the morality of work, and not all moral ideas. Moral ideas that are not included in her syndrome are applicable to both syndromes.
Jane Jacobs goes on to describe what happens when these two moral syndromes are mixed, showing the work underpinnings of the Mafia and communism, and what happens when New York Subway Police are paid bonuses here — reinterpreted slightly as a part of the larger analysis. The Mafia (also known as Cosa Nostra) is a Sicilian Criminal Secret society which is believed to have first developed in the mid-19th century Communism is a Socioeconomic structure that promotes the establishment of an egalitarian, classless, stateless Society based
The Nature of Economies, also in Platonic dialogue form, and based on the premise that "human beings exist wholly within nature as part of the natural order in every respect" (p ix), argues that the same principles underlie both ecosystems and economies: "development and co-development through differentiations and their combinations; expansion through diverse, multiple uses of energy; and self-maintenance through self-refueling" (p82). Biography Early life Birth and family Plato was born in Athens Greece An ecosystem is a natural unit consisting of all plants animals and micro-organisms( Biotic factors in an area functioning together with all of the non-living physical ( An economic system is a System that involves the production, distribution and consumption of goods and services between
Jacobs' characters then discuss the four methods by which "dynamically stable systems" may evade collapse: "bifurcations; positive-feedback loops; negative-feedback controls; and emergency adaptations" (p86). Positive feedback, sometimes referred to as "cumulative causation" is a Feedback loop system in which the system responds to perturbation in the same direction Negative Feedback feeds part of a System 's output inverted into the system's input generally with the result that fluctuations are attenuated Their conversations also cover the "double nature of fitness for survival" (traits to avoid destroying one's own habitat as well as success in competition to feed and breed, p119), and unpredictability including the butterfly effect characterized in terms of multiplicity of variables as well as disproportionality of response to cause, and self-organization where "a system can be making itself up as it goes along" (p137). The butterfly effect is a phrase that encapsulates the more technical notion of sensitive dependence on initial conditions in Chaos theory. Self-organization is a process of Attraction and repulsion in which the internal organization of a System, normally an open system, increases
Through the dialogue, Jacobs' characters explore and examine the similarities between the functioning of ecosystems and economies. Topics include: environmental and economic development, growth and expansion, and how economies and environments keep themselves alive through "self-refueling". Jacobs also comments on the nature of economic and biological diversity and its role in the development and growth of the two kinds of systems.
The book is infused with many real-world economic and biological examples, which help keep the book "down to earth" and comprehensible, if dense. Concepts are furnished with both economic and biological examples, showing their coherence in both worlds.
One particularly interesting insight is the creation of "something from nothing" — an economy from nowhere. In the biological world, free energy is given through sunlight, but in the economic world natural resources supply this free energy, or at least starter energy. Another interesting insight is the creation of economic diversity through the combination of different technologies, for example the typewriter and television as inputs and outputs of a computer system: this can lead to the creation of "new species of work".
Published in 2004 by Random House, in Dark Age Ahead Jacobs argued that "North American" civilization showed signs of spiral of decline comparable to the collapse of the Roman empire. Dark Age Ahead is a 2004 book by Jane Jacobs describing what she sees as the decay of five key "pillars" in the U "MMIV" redirects here For the Modest Mouse album see " Baron von Bullshit Rides Again " Her thesis focused on "five pillars of our culture that we depend on to stand firm," which can be summarized as the nuclear family (but also community), education, science, representational government and taxes, and corporate and professional accountability. As the title suggests, her outlook was far more pessimistic than in her previous books. However, in the conclusion she admitted that, "At a given time it is hard to tell whether forces of cultural life or death are in the ascendancy. Is suburban sprawl, with its murders of communities and wastes of land, time, and energy, a sign of decay? Or is rising interest in means of overcoming sprawl a sign of vigor and adaptability in North American culture? Arguably, either could turn out to be true. "
In the late 1970s, Jacobs and several others decided to found the Energy Probe Research Foundation, an environmental organization that demonstrated the environmental advantages inherent in cities and city life. Prior to Energy Probe's formation, the back-to-the-land movement had succeeded in painting cities as unenvironmental. Through her long influence at Energy Probe, where she was active as a director until her retirement in the late 1990s, public attitudes towards cities changed to recognize cities for their environmental advantages, among them more efficient forms of transportation, housing, and industries.
In her capacity as a director, Jacobs promoted competition and privatization in public transit, postal services, railways, power systems, and other commercial public enterprises. She also promoted property rights as a mechanism to protect the environment, and in international development, the elimination of state-to-state foreign aid to poor countries, which she termed "transactions of decline. "
During her Energy Probe years, themes in Jacobs's books echoed areas of Energy Probe's work: Systems of Survival advocated that commercial enterprises should lie in the private sphere to avoid "monstrous hybrids" of unaccountable public enterprises and Cities and the Wealth of Nations advocated policies for poor areas consistent with those of Probe International, Energy Probe's Third World development wing.
During the 2003 Toronto mayoral campaign, Jacobs helped lobby against the construction of a bridge to join the city's waterfront to Toronto City Center Airport (TCCA). [2] Following the election, Toronto City Council's earlier decision to approve the bridge was reversed and bridge construction project was stopped. TCCA did upgrade the ferry service and the airport is still in operation as of 2008.
Jacobs was also active in a fight against a plan of Royal St. Georges College (an established school very close to Jacobs long-time residence in Toronto's Annex district) to reconfigure its facilities. Jacobs not only suggested that the redesign be stopped, but that the school be forced from the neighbourhood entirely. [3] Although Toronto council initially rejected the school's plans, the decision was later reversed — and the project was given the go-ahead by the Ontario Municipal Board (OMB) when opponents failed to produce credible witnesses and tried to withdraw from the case during the hearing. [4]
One of the recurring criticisms of Jacobs is that her work is impractical and does not reflect the reality of urban politics, which are often controlled by real estate developers and suburban politicians. A response to such critics is to point to the history of cities like New York City and Detroit, which suffered in the 1960s and 1970s as suburban populations grew, took control of the politics of the surrounding region, and voted to starve cities to feed suburban sprawl. The City of New York The 1960s decade refers to the years from the beginning of 1960 to the end of 1969 This article is about the Decade 1970-1979 For the Year 1970 see 1970. This fed the vicious cycle of more departures to the suburbs (see white flight). A virtuous circle or a vicious circle is a complex of events that reinforces itself through a Feedback loop toward greater instability White flight is a term for the demographic trend in which working and Middle-class White people move away from Suburbs
Some Toronto traffic planners fault Jacobs for preventing them from considering expressways to meet growing demand from suburban growth and automobile traffic as the cancellation of the Spadina Expressway heralded the end of new municipal expressways in Toronto. Toronto (təˈrɒntoʊ colloquially pronounced or) is the largest city in Canada and is the provincial capital of Ontario The Spadina Expressway was proposed in the mid-1960s as part of a network of Freeways in Metropolitan Toronto. The City of Toronto, Ontario maintains a system of Expressways and arterial highways at the municipal level They allege that public transit has proven to be as expensive as and less effective than urban freeways.
Toronto businesses have had mixed feelings about Jacobs. Some have applauded her leading the way to a thriving urban core. Others have pointed to higher growth in suburban areas surrounding Toronto that have lower taxes and debt, whereas Toronto's debt is growing. Toronto's mayor argued in 2005 that this trend has more to do with inequalities in provincial tax policy than Jacobs' perceived threat to business growth. [12].
Supporters of Jacobs point out that latent costs have not been taken into consideration. Measures promoted by Jacobs such as urban living and cycling have been argued to be impractical due to skyrocketing downtown land value, although proponents counter that this is the case in the few American cities that have actually maintained a large core population. Jacobs' supporters also claim that there is a lag in time before actual costs of sprawl catch up to suburban communities. They feel it is necessary when implementing such policies to implement them to an entire metropolitan region, and not merely the central municipality.
Another criticism is that Jacobs' approach leads to gentrification: an observed urban social process whereby urban economic development leads to old neighbourhoods becoming too expensive for the original population once "renewed. Gentrification, or urban gentrification, is the change in an Urban area associated with the movement of more affluent individuals into a lower-class " The previous inhabitants are replaced by yuppies and muppies, who enjoy the semi-bohemian bourgeois lifestyle that sometimes arises. The term yuppie (short for " young urban professional The term bohemian, of French origin was first used in the English language in the nineteenth century to describe the untraditional lifestyles of marginalized and impoverished Artists [13] This issue, however, was addressed and criticized in Jacobs' The Death and Life of Great American Cities. Jacobs refers to this phenomenon as the "self destruction of diversity," and lists it as a developmental obstacle that cities must overcome.