## Shape playlist

I made a playlist for Shape, which is coming out in just five days!

All these songs have something to do with geometry or with the book. A few notes:

• “Shape,” BaLonely — a great band from Spokane, a guy who plays guitar and sings and his mom who plays bass.
• “Pythagorean Theorem,” The Invisible Cities. A terrific kinda-dormant-now band from San Francisco. The bass player dated somebody I knew a long time ago and one time I ran into the band at the Ferry Terminal Market and they invited me to a party at their apartment where there was a giant whole roasted pig on the table that everybody ate out of with a fork, and I talked to the bass player about how much we both admired the bassline on “Radio Free Europe.”
• “The True Wheel,” Brian Eno. Sometimes I feel this to be the greatest rock song ever made. The lyric “looking for a certain ratio” appears in Shape as a section title and Eno shows up a few other times too. “Let’s get it understood” might be a kind of motto for math itself. The topologist Benson Farb introduced me to this song.
• “You Make Me Feel (Mighty Real)” Sylvester. Because James Joseph Sylvester appears several times in the book. Also this song can be read as a commentary on the Platonist view of geometric entities. (Is it for or against?)
• “Feed The Tree,” Belly. There’s a whole chapter about trees, and a tree on the cover. “I know all this and more.”
• “The Distance,” Cake. I don’t even like Cake that much but their ridiculous shtick worked perfectly this one time. The idea that you have to pay attention to what you mean by “distance” is central to Shape.
• “Circles,” Post Malone. Once you know what distance is you know what a circle is.
• “The Globe,” Big Audio Dynamite II. And you also know what a sphere is, and what a ball is. (“gonna have a ball tonight / down at the Globe.” “Axis spins so round and round we go” might have something to do with the quaternions.
• “Headache,” Frank Black. A lot of this song is somehow about the book. Starts out “This wrinkle in time, I can’t give it no credit / I thought about my space and it really got me down,” goes on to “I was counting the trees” as if he’s about to invoke Kirchhoff’s theorem.
• “Spiraling Shape,” They Might Be Giants. Unsurprisingly a band that has a lot of geometry songs (like the one about Triangle Man) but this is the one that’s specifically about a shape.
• “Diagonals,” Stereolab. From an album called Dots and Loops.
• “Circle,” Miles Davis. Starting a run of shapes in the plane.
• “Triangles & Rhombuses,” Boards of Canada. More shapes in the plane.
• “Meet Me In St. Louis,” Judy Garland. Written for the St. Louis Exposition of 1904, where a lot of action in the book takes place, and where Ronald Ross, Ludwig Boltzmann, and Henri Poincare all speak (but don’t all meet.)
• “Perfect Circle,” R.E.M. More shapes in the plane. “A perfect circle of acquaintances and friends” seems to refer to the social networks I talk about in chapter 13.
• “Shape of Somethings,” Moving Targets. A little punk rock right before the end of a playlist cleanses the palate.
• “Once In a Lifetime,” Talking Heads. Co-written by Eno. Quoted in the book as a depiction of gradient descent. I listened to Stop Making Sense pretty much non-stop during the training program for Math Olympiad in 1987 and it still feels joyously like math to me. Maybe only me.

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What’s going on with some of the topics previously covered?

Slimming: The initial weight loss reported slowed down, but hasn’t stopped, even though I started eating take-out from restaurants in July and have been doing so pretty regularly. Now at about 18 pounds below pre-pandemic weight. Why, I wonder? Is it really just the lunch out at work and the snack at the coffeeshop forgone?

Pandemic elections: 100,000 people in Dane County have already returned their absentee ballots for November. The city is setting up “Democracy in the Park” events where voters can turn in their ballots to city pollworkers; Republicans are trying to have those events declared illegal, because (this is me editorializing) they make it easy and convenient for people to vote whose votes they’d rather not see cast. There is a lot of noise about slowness of the mail, but it’s been fast here, and I mailed my ballot in; received by the clerk in just two days. The underlying worry here is that political actors will try to retroactively have legally cast ballots invalidated after Election Day, leaving voters with no recourse. The fact that mailed-in absentees are expected to be predominantly Democratic (only 44,000 ballots returned so far in Crucial Waukesha County) creates an obvious means of attack. I don’t really think that’ll happen but people are thinking about it under their mental breath.

Writing: The book is almost done! A draft is written, I’m going through and revising and putting in more endnotes now. To me it seems completely different from How Not To Be Wrong, while Dr. Mrs. Q says it seems exactly the same, which seems a kind of sweet spot: I can hope the people who liked the other book will like this one, while feeling for myself that I’m not putting out the same product again and again like a hack.

Impossible Meat: We’re still eating a lot of it! I have absolutely learned to read it as meat and no longer think of it as a substitute. But we’ve converged on using it exclusively in sauces; as a burger, it still doesn’t totally satisfy.

Smart Restart: After the big surge with the opening of classes, UW-Madison shut down in-person instruction for two weeks and put the two first-year dorms where cases were concentrated into isolation. The positivity rate on campus has dropped back down to around 1% and the campus outbreak doesn’t seem to have created sustained exponential growth in Madison’s general population; but it does seem to have brought our daily case load back up to where it was months ago, from which it is, again, only very slowly dropping. When R_0 is a little less than 1, even a brief bump up in prevalence can be very expensive in terms of long-term cumulative case numbers. Now we are starting football again. Is that smart? There won’t be any fans in Camp Randall (which means the economic catastrophe for local businesses of a year without a football season is going to happen unblunted.) Then again, there’s something hypocritical about me saying “Hell no, why take the risk” since I’ve been watching and enjoying baseball. The enjoyment of millions of fans actually does have value. MLB, because lots and lots of money is riding on this, has mostly kept its players and employees from suffering outbreaks. The Big Ten can probably do the same — if it cares to. What I worry about is this. By all accounts, in-person teaching hasn’t been spreading COVID either. But when we had in-person teaching, everyone felt things were more normal, and thinking things were more normal, they relaxed their social distancing, and that generated thousands of cases. There was indirect spread. Will football generate the same?

## Pandemic blog 32: writing

Taylor Swift surprised everyone by releasing a surprise new album, which she wrote and recorded entirely during the quarantine. My favorite song on it is the poignant “Invisible String”

which has an agreeable Penguin Cafe Orchestra vibe, see e.g.

(The one thing about “Invisible String” is that people seem to universally read it as a song about how great it is to finally have found true love, but people, if you say

And isn’t it just so pretty to think
All along there was some
Invisible string
Tying you to me?

you are (following Hemingway at the end of The Sun Also Rises) saying it would be lovely to think there was some kind of karmic force-bond tying you and your loved one together, but that, despite what’s pretty, there isn’t, and you fly apart.)

Anyway, I too, like my fellow writer Taylor Swift, have been working surprisingly fast during this period of enforced at-homeness. Even with the kids here all the time, not going anywhere is somehow good writing practice. And this book I’m writing, the one that’s coming out next spring, is now almost done. I’m somewhat tetchy about saying too much before the book really exist, but it’s called Shape, there is a lot of different stuff in it, and I hope you’ll like it.

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