Orthodox Jews Install a Boundary in New York

1. Overview

A symbolic fence known as an “eruv,” made by stringing transparent fishing line around streetlights in parts of Manhattan so that Orthodox Jews can carry objects on the Sabbath, became a topic of discussion in Korean online communities, where it was dubbed a “boundary.”

An eruv is a device that uses a nearly invisible line to let part of a city be treated as “one home.” A post on FM Korea explained the idea humorously, while NPR, The New York Times, and the official website provide information on what the Manhattan eruv actually looks like and how it is maintained.

2. How an Eruv Works

According to NPR, the concept of an eruv was first established about 2,000 years ago. Its purpose was to make it easier in practice to observe a Sabbath law prohibiting the transfer of objects from a home into a public space. Under this rule, even house keys, wallets, and strollers cannot be carried outside. Parents with young children would effectively be unable to leave home on Saturdays. An eruv addresses this by symbolically extending the boundaries of the home into public spaces, allowing acts that would normally be prohibited within its boundaries.

The New York Times described an eruv as “a rabbinically approved workaround.” Although the Bible and Talmud define carrying objects outside the home as prohibited labor on the Sabbath, an eruv circumvents this by greatly expanding the boundaries of “the home.” The FM Korea post likewise explained that carrying objects is prohibited from sunset on Friday until sunset on Saturday, the Sabbath. It presented the solution devised by Jews as enclosing an entire town or city with string and treating it as a single space.

3. Construction and Maintenance of the Manhattan Eruv

The Manhattan eruv is made by stringing transparent fishing line over the tops of streetlights and including adjoining buildings as part of the boundary. NPR reported that the line is strung between poles around the edge of Manhattan and that most passersby do not even notice it. Sources differ on when it began. The New York Times wrote that it started on the Upper West Side in 1994 and expanded east to the East River in 2004. The official website, Eruv.NYC, says it began as a local eruv on the Upper West Side in 1999 and now encircles most of Manhattan. Sources also differ on its extent: NPR says it runs from First Street to 126th Street, while The New York Times describes it as extending south to Houston Street and running almost from river to river between 126th Street and Houston Street.

Maintaining it requires considerable expense and labor. NPR described the Manhattan eruv as “perhaps the most expensive eruv in the world.” According to the official website, the eruv is established and supervised by Mechon L'Hoyroa in Monsey, and its operating body is the nonprofit Manhattan Eruv Inc. The New York Times reported that a rabbi inspects the entire route each week and calls in a construction company to repair any broken sections. The official website posts status updates every Friday and also provides a map, a way to report issues, and a donation portal. This “boundary” is therefore not something that can simply be put up and forgotten; it is a facility that must be checked and repaired by people every week.

4. The 2011 Line Break During the UN General Assembly

On September 23, 2011, this inspection system was put to the test. According to The New York Times, a few hours before sunset on Friday, when the Sabbath was due to begin, a break was found in the line on the eastern section between 44th and 45th Streets on Second Avenue. Rabbi Yaakov Y. Kermaier, then president of the New York Board of Rabbis and chairman of the Manhattan Eruv Committee, notified other rabbis by email.

The problem was that the UN General Assembly was also taking place at the time. Police and the Secret Service were controlling the lanes for motorcades carrying attendees to the General Assembly, preventing a repair truck from entering. Rabbi Kermaier reported that “a convoy of seven cars passes every 45 seconds,” making it impossible for a truck to get through. The committee therefore secured permission to carry a ladder into the area by hand, under NYPD supervision. The rabbi added that he was “cautiously optimistic.” At the time the report was published, it was not known whether the repair had been completed.

5. Spread of the “Boundary” Meme

The FM Korea post introduced the device as the “boundary Orthodox Jews installed in New York.” Its satirical plot follows a “singbungi” who lands at an airport, sees a long string hanging over the street, and removes all of it with a ladder to beautify downtown. The post then explains the Sabbath law and the workings of an eruv, after an exaggerated ending in which angry Jews rush in and give the protagonist a dressing-down. It also said that a professional team checks every week before the Sabbath to ensure that the boundary has not been broken. This matches The New York Times’ account of the weekly inspections.

The post also quoted a screenshot from the official eruv website. One notice, stating that Ninth and Tenth Avenues between 20th and 22nd Streets were excluded from the eruv because of construction, matches the information on the actual official website. A Reddit post on r/TrendoraX also described an eruv as a perimeter, often made of wire, that Orthodox Jews use to expand private space and avoid Sabbath restrictions. However, only a brief summary of the Reddit post is available, so its specific details are unknown.

6. Authenticity Debate

The central question is whether the line can be described as a “boundary that completely encloses Manhattan.”

6.1. The View That It Is a Real, Complete Boundary

This side argues that the Manhattan eruv is not merely symbolic, but a real and carefully maintained device. NPR and The New York Times describe transparent fishing line strung between poles and streetlights around Manhattan, while the official website confirms the eruv’s existence and provides information on its maintenance, making it difficult to deny that it exists. The New York Times said that a rabbi walks the entire route each week to inspect it, and the official website also posts a status update every Friday. In 2011, even when the roads were blocked for the UN General Assembly, people tried to carry a ladder into the area by hand to make repairs. This shows how diligently they try to maintain it. The official website’s statement that “our eruv has never been down” is also, according to this view, evidence of its completeness.

6.2. The View That the “Boundary” Story Is Exaggerated

The opposing side argues that even the phrase “a boundary around all of Manhattan” is inaccurate. The New York Times wrote that the boundary runs “almost” from river to river between 126th Street and Houston Street, while the official website says it covers “most of Manhattan.” Ninth and Tenth Avenues between 20th and 22nd Streets are excluded because of construction; the upper part of a park near 95th Street is entirely excluded; and some sections of intersections are also excluded. The website instructs people to “follow the line” around these sections. This means the boundary is not a smooth circle, but a complex line with exceptions along the way.

Moreover, “boundary” is an outside metaphor. As The New York Times explains, an eruv is a means of extending the boundaries of “the home” under Jewish law. The post’s story about someone being given a dressing-down for taking down the line is also satire, not an incident confirmed to have actually happened. The official website’s statement that the eruv has “never been down” also seems to conflict with The New York Times’ report that a line broke in 2011. The published reports and website do not reveal whether repairs were made in the interim or what criteria the website’s statement is based on.

Taken together, the facts make clear that the boundary exists, but the description of it as “a boundary that completely encloses all of Manhattan” appears somewhat exaggerated. The final outcome of the line-break incident and how it relates to the claim that the eruv has “never been down” remain unresolved.

7. Trivia

• A Korean translation in one screenshot quoted in the FM Korea post described the eruv as “a restricted area under Islamic law.” However, NPR describes an eruv as a symbolic Jewish boundary, while The New York Times calls it a rabbinically approved workaround.
• The post’s author also said that, because turning lights on and off is prohibited on the Sabbath, there are Sabbath-specific lights that “cover” a flame rather than “extinguishing” it. This explanation appears in one part of the post.
• The post ends with an explicit joke: the protagonist who takes down the line is taken to “Epstein Island” and made to work as a cross-dressing maid. This is satire and unrelated to any real incident.
• NPR quoted a mother living on the Upper West Side, who described being stuck all day in a small apartment with young children and no electricity as “a little maddening.”