Link Roundup: April 2020

I tried to make so that not all my links were COVID-19-related… so I have one thing.  Yeah, the problem with virus links is not just that we’re tired of them, it’s that they get out of date too quickly for a monthly link roundup.

Why Avatar has the Most Ironic Soundtrack of All Time | Sideways (video) – Avatar was a thing, I guess it must have had a soundtrack?  Apparently the director wanted the aliens to have totally alien music, blending all sorts of traditions, like nothing we’ve ever heard before.  So the composer consulted with an ethnomusicologist, and they made what was requested.  But the director rejected it over and over, and the movie got a bland soundtrack that I for one cannot remember.  The guy who made this video though, he’s just so unreasonably optimistic about this rejected soundtrack.  Does he think that if they made a soundtrack unlike anything anyone’s heard and put it in a blockbuster film, people would like it?  It was a fool’s quest from the start.  Gosh, I’m sure I would like it, but I also like pop songs where the vocals are a half-step out of key.

For those who don’t like video, the story is also in an article written by the ethnomusicologist.

The rest are coronavirus.

I Can’t Stop Watching Contagion | Folding Ideas (video) – Content warning: anxiety-inducing.  Dan Olson talks about a 2011 film about a pandemic, sort of like how I wrote earlier about Doomsday Book, but he does it better.

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Working out

Another thing I have been doing while stuck at home, is weight training. That’s out of character for me. I’ve never “worked out” in my life, never gone to a gym, or otherwise made a deliberate plan to exercise. Not since P.E. classes in middle school. I used to go hiking occasionally, but stopped several years ago as I decided I wasn’t fond of the activity (in retrospect this may have been asthma-related).

The story goes that my husband goes to the gym on a regular basis. All the gyms are closed. So he bought some gym equipment, which we store on the balcony. I proposed I could join him, so this happened.

Each day, we start with some jumping jacks to warm up, and a few stretches. Then my husband picks out some exercises from a book or youtube, focusing on a particular group of muscles. For each exercise we repeat the motion for several sets, and around 10 repetitions per set. The next day we work on a different group of muscles.

It’s completely different from my P.E. classes from when I was a kid.

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Heaven’s Vault, Disco Elysium

My blog has hit a bit of a slump–the coronavirus has taken the wind out of everything that isn’t itself. But if I were to examine the more direct causes for the slump, I’d have to look at video games. Yes, I’m playing video games instead of blogging. Well why don’t I blog about video games?

In the past month, I played two narrative video games: Heaven’s Vault and Disco Elysium.  These are my brief reviews.

Heaven’s Vault is a game about an archaeologist trying to understand the collapse of an ancient civilization. It takes place in a low-tech sci-fi environment where people sail between the “moons” of a nebula, but only really through the use of ancient tech. This game features four main gameplay loops: sailing between moons, exploring sites, dialogue trees, and translating ancient text.

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Origami: Waterbomb Curve

waterbomb curve

Waterbomb Curve, designed by me

This is a variant on the so-called waterbomb tessellation (a photo of which you can find somewhere in my blog archives).

A neat thing about the waterbomb tessellation is that it naturally curves into a sphere-like shape.  The tensions in the paper cause the tessellation to have an overall positive Gauss curvature,* like the surface of a sphere.  So I was thinking about how cool it would be to patch together multiple waterbomb tessellations, some concave up, and some concave down.  This here is the result.

*My understanding of differential geometry tells me that what determines the shape is mean curvature rather than Gauss curvature, but if you don’t know what that is then never you mind. ETA: On second thought I’m not sure this makes a lick of sense.

Trump’s Atrocious Trolley Trade-off

Note: This post has been retracted.  See explanation.

Recently, some Republicans have suggested that social distancing measures are not worth the damage they cause to the economy. This was explicitly suggested by Texas Lieutenant Governor Dan Patrick, who wanted to sacrifice senior citizen’s lives. But it was also suggested by Trump who said,

We have two very, very powerful alternatives that we have to take into consideration. Life is fragile, and economies are fragile.

So they’re seeing it as a trolley problem: do you save the people on the tracks, or do you maintain the trolley schedule? Oh, won’t somebody please think of the trolley schedule!

I’d like to take this moral dilemma seriously, for the sake of argument. At the end, I will estimate, just how many Hitlers are we talking here?

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Retrospective: Doomsday Book

Doomsday Book is a science fiction novel about an epidemic, published in 1992, and read by me in 2015. At the time, I gave it 1/5 stars. Today, it’s the most directly relevant work of fiction I have ever consumed.

This isn’t a proper review, because I can only remember so much from a book I read five years ago, and which I didn’t even like. I’m reconstructing some of my memory based on the Wikipedia summary, and based on the two paragraphs of private notes I wrote for myself.

Doomsday Book is about history grad student (?) Kivrin, in a world where historians perform field work by traveling back in time. Time travel is underpowered here—the timeline simply won’t allow people to travel to a point in time if it would change history. And rather than zipping back and forth through time, Kivrin is preparing for a single trip to medieval England, which is the culmination of her PhD.

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I read popular physics: The cosmic crisis

Someone went and got me a subscription to Scientific American, so for the past few months I’ve been covering physics articles, now with the benefit of a PhD. Perhaps it’s a way to keep in touch with my physics roots as my career has moved on to other things.

In this month’s issue, the cover article is “A Cosmic Crisis“, about a discrepancy between two measurements of the age of the universe.

Funny thing, there’s always a letter from the editor in chief where he introduces all the major articles, and here he contrasts the “cosmic crisis” with another ongoing crisis, that thing between US and Iran. Yep, this sure is an article that was written last month! FWIW, I could do with some reading that has nothing to do with COVID-19.

I thought I’d review the article in approximately the order in which I read it: pretty pictures first, walls of text last if at all. For serious, this is the correct way to read a science article, I can say that as a person with a PhD.

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