A tumblr ban hot take

Anyone remember that time that Google tried to ban adult content on Blogger, and then took it back three days later?  No?

Tumblr announced that they are banning adult content, starting on December 17.  According to their policy,

Adult content primarily includes photos, videos, or GIFs that show real-life human genitals or female-presenting nipples, and any content—including photos, videos, GIFs and illustrations—that depicts sex acts.

The policy includes additional exceptions for breastfeeding, health-related situations, political speech, and nudity in art.

This morning I saw a lot of doom and gloom about the ban, which I would deem justified.  Most obviously, this hurts sex workers and erotic illustrators, who may be using tumblr as a source of advertising or income, and are now being evicted.  But more broadly, it’s a big concern for fandoms.  Although not all fans are interested in erotic art, fandoms are interconnected communities, and you can’t just excise the adult content without affecting everyone.  It is likely that entire fan communities will just get up and leave.  There is precedent for this in Fanfiction.net and LiveJournal.

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FTB is back up

FTB was down for most of yesterday, and Matthew Herron explains why.  Short version: technical difficulties.

Anyway, for people who follow me using RSS, you should know that the RSS feed might behave a bit strangely.  On my RSS reader, the post I had scheduled yesterday about origami spirals doesn’t show up.  Some of the recent Pharyngula posts don’t show up either.  Maybe it will sort itself out later, but in the mean time I wanted to give a heads up.

Origami: Spiral creases

A square sheet of silver foil paper, with 4 spiral creases radiating from the center

Four 45 degree spiral creases

This is going to be one of those origami posts where I talk way too much about math.  But before I get to the math, I will explain how you can make one of these things entirely with ordinary arts and craft tools.

“Ordinary tools” is the relevant bit here, since my understanding is that experts in curved-crease origami don’t use ordinary tools, they use things like vinyl cutters.  When I first tried making these, I could not find any instructions for how to make these models using ordinary tools (I later found an article by Ekaterina Lukasheva), so when I finally figured out a method, I wanted to share it.

Making a template

Before we draw the creases directly on the paper, we need to make a template.  The template ensures that each of the four curves are identical to each other.

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