Link Roundup: December

Poisson has blessed me with many links this month.  I’ll start with a few plugs and followups.


The Ace Community Survey Team (which I co-lead) released our big report on the 2016 Ace Community Survey, alongside a shorter report on the 2015 survey.  If you’re interested in data, or want to know about the kind of diversity we talk about in ace communities, please take a look!

I wrote a summary of a scholarly article on asexuality and race.  Yep, I’m reading about critical race theory now.


After I wrote about the Tumblr ban, there were several other takes in my circle.  Brute Reason talked about how awful this is for sex-positive communities.  And Marcus Ranum put it in context, as an example of a cloud service exercising monopoly power.

I was saying over on Tumblr, that the widely mocked “female presenting nipples” is strangely appropriate.  There’s no way to tell someone’s “real” gender, you don’t know how people identify, and you’d like the policy to depend on whether the person wants to appear female or not.  On the other hand, “female presenting” is ambiguous whether it refers to intended appearance, or simply appearance (and the latter is likely more accurate to their real policy).  Anyway, they clearly put some thought into it, and the problem is that it’s attached to a discriminatory policy.

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Classifying sexual violence

Readers may recall earlier this year, when I wrote a practical guide to sexual violence terminology.

Now I’ve written another article, as part of the Ace Community Survey Team, explaining how sexual violence is classified by the CDC.  Go take a look.

Although the CDC’s definitions of sexual violence are publicly available in the NISVS report, few lay people would sift through over a hundred pages in order to find them. The lack of easily accessible information concerns us, because it deprives some victims of tools they need to understand their own experiences. The goal of this article is to explain the CDC categories and their use in the 2018 Asexual Community Survey.

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 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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