Wikitopia:
A Future City Built by "Everyone"

Yuichiro Takeuchi

Who exactly is responsible for building the cities we live in? The local government, large corporations, expert groups such as architects and urban planners—many answers come to mind. But in reality, the power to shape cities isn't broadly distributed among everyday citizens, the actual users of these spaces. Instead, it tends to be concentrated in the hands of specific organizations and individuals. On the other hand, when we look at digital creations such as websites, we see many examples of large-scale, reliable systems created by "everyone," such as Wikipedia or Linux. These collaborative systems offer numerous advantages, including the ability to democratically reflect diverse perspectives, the flexibility to quickly adapt to sudden social changes, and a high level of trust based on transparent processes.

In my research, I aim to apply this co-creative production model, often referred to as "peer production," which characterizes digital media, to real-world city-building. My goal is to realize a future city, Wikitopia, that is continuously edited and improved through citizens' voluntary problem-solving and democratic decision-making.

This may sound far-fetched, but there are already various domestic and international examples of residents taking the initiative to shape their communities. The U.S. West Coast's parklet system, which allows residents to transform part of a public street into small parks, is just one of the many public frameworks emerging to support this idea. Systems are being created to empower residents to bring their ideas to life, whether it's something they want or need in their community.

Currently, these bottom-up urban development efforts remain low-tech and small-scale. However, by leveraging advanced technology, I aim to accelerate and popularize citizen-driven city-building, making it a commonplace activity.

At the core of my research is the development of new technologies that serve as the foundation for Wikitopia. I believe four key categories of technology will play a particularly important role in realizing this vision, and I have structured my research accordingly. Currently, my main focus is on the development and management of the urban planning platform "dédédé" and the next-generation platform "Wikitopia OS," which incorporates augmented reality (AR).

dédédé (https://dedede.de) is an online platform where people can share their thoughts and ideas about the city (whether it's "great (eede)," "bad (akande)," or "why (nande)"). While it's a type of social media and not particularly noteworthy in terms of technical innovation, it has the potential to serve as an effective tool for gathering citizens' real-time feedback on urban planning and sparking their interest in city-building. I plan to continue operating it as a free service and will promote it through workshops worldwide.

Wikitopia OS is a next-generation urban development platform, which combines dédédé with AR to present citizens' opinions, proposals for improvement, visions for the future, and other urban-related information in a way that integrates with the cityscape. Though it's still in development and has a long way to go, my goal is to make it more expressive than conventional AR systems. For example, it would allow users to vividly visualize the potential impact of significant urban changes, such as "What if this area were turned into a plaza?" or "What if we banned outdoor advertising?" or "What if we introduced building height restrictions?" Wikitopia OS also features artificial intelligence (AI) that aggregates the diverse opinions and ideas gathered from citizens to derive a "democratic consensus" for the city. While outdoor AR often struggles with accurate device positioning, Wikitopia OS resolves this through a new marker technology called "Ninja Codes."

In addition to these efforts, I'm developing other technologies such as Printable Garden, which supports citizen-led urban greening projects using 3D printing, and AnyLight, a programmable IoT lighting system. I'm also collaborating with teams from Italy and Australia to create a new mathematical model of urban development that allows for the quantitative analysis and prediction of citizen participation in city-building.


To be honest, the concept of Wikitopia started as little more than a passing idea. It gradually took shape as a research project thanks to collaboration and engagement with universities, local governments, corporations, and various organizations both domestically and internationally. In the past, we even held a design competition called the Wikitopia International Competition, where submissions provided valuable insights into the direction of the project. While Wikitopia is a concept for a future city built by "everyone," the concept itself has also been co-created by "everyone" and will continue to evolve in the same way.
For the latest updates on my research, please visit the project's website (https://wikitopia.city), which is regularly updated with new information.

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