The impossible symmetry

This is the third part of a series about symmetry in origami.  Previously, I established the idea of a symmetry group, a set of transformations that leaves a model’s shape unchanged.  Next, I talked about how the colors of a model define a subgroup.  In this post, I will explain the concept of a normal subgroup.

First illustration: The Umulius

We begin with a case study of one of my favorite models, Thoki Yenn’s Umulius.  “Umulius” is a Danish insult meaning “impossible person”.

Umulius

Ignoring the colors, the Umulius nearly has cubic symmetry.  Here I have a series of diagrams “cleaning up” the details to make the underlying cubic symmetry clear.

A series of diagrams showing how the Umulius can be fit into a cube

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Image over substance

[cn: CSA, sexual assault]

Actor Kevin Spacey was recently accused of sexually assaulting a 14 year old boy. The incident was 30 years ago. Kevin Spacey, didn’t he play the protagonist in American Beauty, a movie that all but celebrated pedophilia, and featured a repressed homosexual murderer? Oh, I guess people today mostly know him for his role in House of Cards.

Anyway… this story caught my eye because several friends were saying that Spacey had found the one time that it was inappropriate to come out as gay. See, in Spacey’s statement of apology, he added a paragraph saying that he was gay.

Yeah, so about that. It makes sense that he would say that, because after all, he was accused of sexually assaulting a boy, and had long been rumored to be gay. People were going to connect the dots. They already connected the dots in the article which first published the accusations! But I agree that it seems like a deeply inappropriate time to come out, because it comes across as an attempt to distract. Indeed, some news outlets ran stories that mentioned the coming out first, and the accusations second. Although, looking at Google news results, I suspect this was the exception to the rule. If the intention was to distract, it probably just drew more media attention.

I want to talk about how some people criticized Spacey for the wrong reasons. Yes I know that sounds pedantic. Really who cares if some people come to the correct conclusion for wrong reasons? The reason I care, is because I care about the issue of sexual assault in the context of queer men. And some commentators? They seem to care more about image over substance.
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Origami: Octahedron Skeleton

Octahedron skeleton

Octahedron Skeleton by Robert Neale. I hope nobody was expecting an actual skeleton. Halloween was yesterday.

I know somebody who runs an art gallery, so every year I run a workshop for kids where we do modular origami.  The hardest part of designing the workshop is picking the right models.  I’ve been quite surprised by which aspects the kids find difficult, and which aspects they perform with ease.

Anyway, this is one of the models I picked this year.  It’s on the easy side, and the kids thought so too.  And that’s great!  Art doesn’t need to be technically challenging to be good.

If you’d like to try this one out, I made some fancy diagrams to print out and pass to the kids.  Check them out below the fold.

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Who is #metoo for?

[cn: non-explicit discussion of sexual harassment and assault]

A week ago, there was the #metoo campaign. It called for people who had experienced sexual assault or sexual harassment to say “me too” on social media, so that we might realize how common it is. It swept over Facebook for quite a while, so presumably most readers have already heard of it; I’m just recapping so nobody feels left out.

I didn’t say anything on Facebook, but here I will say, “Me too.” I have been a victim of multiple counts of sexual assault, including rape. It’s not a big deal for me to come out and say this, because I have been open about it for years.

#Metoo was not a helpful campaign to me personally.  I did not desire to participate, and I did not learn anything from it.  I already knew lots of people have experienced sexual assault and harassment.  I mean, I work on the Asexual Community Survey and produce graphs like this one.

A plot of the percentage of people who experience sexual violence, broken down by age. It's around 30% for minors and approaches 70% for people in their 40s.

Please do not take the numbers on this graph literally, and do not duplicate the image without citation to the report that it comes from. There’s a lot of additional context that changes its interpretation.

The plot suggests that about 70% of the ace respondents to our survey will experience sexual violence of some kind in their lifetime.  It will be somewhat smaller in the general population, because the general population has more men and is less queer.  (In our own survey, the straight non-ace people had rates that were about 10% smaller.)  But no matter how we cut it, we’re talking about a very significant fraction of the general population.  And that doesn’t even include sexual harassment!

This is all to say, if you really want to know how widespread sexual assault and harassment is, you can just look those numbers up.  Believe those numbers.  Internalize them.  Now just pretend that X% of your friends said, “Me Too,” and you can save them the trouble of actually having to do it.

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Asexuality survey and report

This week is Asexual Awareness Week.  Presently I don’t do any outreach or education work, but I do work on the Asexual Community Census.

The Ace Community Census is an annual survey by the Ace Community Survey Team, which collects valuable information on the demographics and experiences of members in the ace community. It is the largest survey of ace communities and creates a valuable pool of data for future ace community activists and researchers.

The survey is open to anyone: ace, non-ace, or still questioning; as long as you are 13 years of age or older we want to hear from you!

Click to participate!

We have also just published a report of the results from our 2015 survey.  Take a look!

I may talk about this report more later, but for now I am happy to take any questions, either about the report, or the survey.

Ignoring the dystopia

This is a repost of an article from 2015.  I selected this one because it mentions Never Let Me Go, a book by Kazuo Ishiguro, who is now a Nobel Laureate.  He is a great writer, and I recommend the book–but not the movie.

Instead of committing any words to my own novel, I spent the last month or so reading Pride and Prejudice.  It was research, I say.  Research!

Pride and Prejudice of course takes place in the dystopia that is Georgian England.  True to the dystopian genre, there are multiple fantastical constructs which are slowly introduced to a horrified audience.  For instance, there’s the idea of an “entail”.  I don’t really get the purpose of it, but apparently it’s a restriction on whether an estate can be passed on in your will.  And then there’s “elopement” which just means that a woman runs away with her lover.  It doesn’t sound like there’s anything wrong with that, but within the dystopia it’s a horrible thing to do, and a complete disgrace to the entire family.

There are also many neat world-building details.  I like how the servants are always there, but no one ever thinks about them much, because that’s just how wealthy people in this universe think.  At the same time, rudeness towards servants signals an unsympathetic character, and kindness towards servants signals a noble character.  That’s the only way the lower classes are ever important: in relation to wealthy people.

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Skeptical content creation

As I mentioned in my bloggiversary post, good skeptical content creation is hard. In order to debunk something, and do a good job of it, you have to do research. You have to do a lot of research, even if it’s something ridiculous, like 9/11 conspiracies or bigfoot. Talking about a conspiracy theory is an invitation for conspiracy theorists to start arguing with you, and they tend to be pretty familiar with the topic, because it’s their topic. In contrast, the skeptic needs to spread themself thin, because there’s just so much bunk in the world.

That was fine decades ago, when “skepticism” basically referred to a committee of experts who dedicated their time to it. It doesn’t work so well today, when most content creators are hobbyists, or at least start out as hobbyists. My experience as a new blogger was that research was sometimes fun, but it got tiring really fast, and I didn’t have the readership to justify putting a lot of work into it. And rigorous research doesn’t get rewarded, because it’s not necessarily entertaining. Furthermore, “research” would mostly consist of me repeating things I had learned from basic resources, and what’s the point of that?

There are ways around this problem, but I don’t think they were very healthy for the movement. One method is to gloss over the lack of rigor with humor and mockery. Another method is to get by with a few general principles of reasoning, the stuff we call “critical thinking”. I took the latter approach, so I will talk about that.

The trouble with fallacies

Critical thinking in the skeptical movement was an odd beast. What exactly is it? How do you practice it? Can you name any principles of critical thinking?

Some of the most recognizable principles are the logical fallacies. You know, ad hominem, begging the question, argument from authority, etc. Many people such as myself gravitated towards logical fallacies, because it’s fun to learn about all of them and read silly examples of them. I liked to write about them too.
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