Veruca Salt

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Uber spams with drones; sales of HERF guns skyrocket

Uber's Ad-Toting Drones Are Heckling Drivers Stuck in Traffic

Drivers stuck in traffic in Mexico City lately have found themselves being buzzed by a fleet of sign-toting drones. "Driving by yourself?" some scolded in Spanish. "This is why you can never see the volcanoes" -- a reference to the smog that often hovers over the mega-city and obscures two nearby peaks.

It wasn't exactly a plea for environmentalism, though -- it was an ad for UberPOOL, part of Uber's big push into markets across Latin America.

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Hollow Children

Björn Griesbach:

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The Library of Babel, again

I'm still messing around with floor plans of The Library of Babel, and if you are asking yourself, "Why is he doing this?" then you and I have that in common.

An idea I had was that if the "gallery" and the "alcove" were both laid out on hexagons of the same size, it makes things pack better -- or at least makes the voids between galleries always be hexagonal, instead of other weird shapes, and that pleases me.

Here are two contradictory phrases that occur in the text "narrow corridor" and "spiral staircase". Spiral staircases are huge. They have to be. That's kind of their thing. So I tried to pack things down by putting the staircase off-center, walled off, and that works out ok, except it adds packing constraints: the stairway no longer lines up if the alcoves above or below this one has been rotated. So that severely limits the variety of layouts available.

And here are a bunch of them, all aimed in the same direction, because the two doors on each gallery are opposite each other:

So maybe that wasn't such a good idea. So I went back to a central, symmetrical spiral staircase. Here's what that looks like, with every room having a 101110 layout, creating six-gallery loops:

And here are three floors of it: to make this connect, each spiral staircase would span two floors:

If you want to play around with other layouts, here's my Sketchup file: babel.skp.

Update: Now with smaller and more treacherous stairs, narrower hallways, and hallways that turn!

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