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What's Under Your Feet in New York City?(practical.engineering)
107 points by sohkamyung 4 days ago | 14 comments
hotstickyballs 4 hours ago | parent | next [-]

https://en.wikipedia.org/wiki/New_York_City_synagogue_tunnel...

dataviz1000 4 hours ago | parent | next [-]

Meanwhile in place of power, cable, and phone lines there is a related 18 mile translucent line hung in order to turn the entire city into one big happy home called a *eruv* -- following the law of the highest of high courts to the letter. [0]

[0] https://www.youtube.com/watch?v=hSldb9IMDVU

woodruffw 3 hours ago | parent [-]

AFAIK the eruvim are not dictated by “high courts” (there is no “high court” at all), but are instead constructed and maintained by various Orthodox groups. Not all Orthodox groups agree about their propriety either, so the presence of an eruv doesn’t necessarily mean that it’s recognized.

(Also pedantic, but it’s not the entire city: there’s a Manhattan eruv that covers a large part of Manhattan, while Brooklyn, Queens, and the Bronx have separate smaller eruvim.)

randallsquared an hour ago | parent [-]

There's a lot one could say about

> following the law of the highest of high courts to the letter.

but I don't think that "there is no 'high court' at all" is one, for believers.

cogman10 4 hours ago | parent | prev | next [-]

This is a very weird story.

Religious infighting with 2 fundamentalist sects that somehow boiled down to some people digging a tunnel connecting 2 buildings because of... reasons? Like it seems like they thought that if they built the tunnel that'd magically lead to everyone deciding "You know what, this expansion project is a good thing!"

Very bizarre.

Regardless, I'm glad it got shut down before a collapse killed someone.

woodruffw 4 hours ago | parent [-]

> Religious infighting with 2 fundamentalist sects that somehow boiled down to some people digging a tunnel connecting 2 buildings because of... reasons?

The very short version is that both groups claim ownership of that building, and one of them wants to expand it significantly. Neither group is allowed to modify the building because of a court order, so the one that wants to modify it did it surreptitiously in an attempt to create facts on the ground that would modify the status quo.

(Obviously none of this is sensible, but the actual reasons are pretty quotidian.)

masfuerte 3 hours ago | parent | prev | next [-]

It's quite frustrating. The story ends with:

> four defendants refused to accept a plea deal and were set to be tried in April 2025

I can find loads of stories reporting those facts, but I can't find an account of what happened next. Did they change their pleas? Were they tried?

rdtsc 4 hours ago | parent | prev [-]

An illegal tunnel in a densely populated city like that is a bold move.

This was unexpected though:

> stills taken from videos of the synagogue's interior as well as the room leading to the tunnel, which showed a stained mattress and high chair, respectively, fueled antisemitic conspiracy theories

> A USA Today fact-check stated that the stained mattress seen in viral videos had been removed from behind wood paneling of the synagogue rather than from the tunnel itself, undermining online speculation that the mattresses were in the tunnel

noworriesnate 30 minutes ago | parent [-]

Here's a video in which a Rabbi who is a member of the sect clarifies the story:

https://xcancel.com/Truthtellerftm/status/197901264211193488...

mike_hock 3 hours ago | parent | prev | next [-]

That's where the mutants live. Also, there's a thousand year old, old New York City buried underneath that had bathroom booths with phones in them.

throw1234567891 16 minutes ago | parent | next [-]

And those weird booths that look like suicide booths, are no suicide booths. I love you, meatbags! Hello, it’s me, Bender Rodriguez!

argelio4321 6 minutes ago | parent | prev [-]

Argelio

programmertote an hour ago | parent | prev | next [-]

One of the most informative videos from Practical Engineering channel. I thought I knew NYC infra fairly well, but I learned so much from that video still (like how NYC's electric grid is actually a grid and more fault tolerant).

zkmon 3 hours ago | parent | prev [-]

Fascinating. Anything that grows up above ground has a proportionate growth below ground as well.