Regions Unlocked

Thanks to the community’s invention of a “Region unlocked” achievement, I’ve been able to instantly (and retroactively!) tick another one off my geohashing list, for my expedition on Trinidad early this year!

(Possibly I’ve achieved it other times, too: I haven’t yet determined whether anybody successfully hashed in County Mayo or County Galway before I did last year, on account of both counties spanning multiple graticules and so requiring more research!)

Citing Lobachevsky

This is a repost promoting content originally published elsewhere. See more things Dan's reposted.

The recent death of Tom Lehrer has resulted in all manner of interesting facts and anecdotes about the man being published around the Internet, but perhaps my favourite was the tale about how, while working for the NSA in 1957, he snuck an Easter Egg into a research paper… that went undetected for nearly 60 years:

I worked as a mathematician at the NSA during the second Obama administration and the first half of the first Trump administration. I had long enjoyed Tom Lehrer’s music, and I knew he had worked for the NSA during the Korean War era.

The NSA’s research directorate has an electronic library, so I eventually figured, what the heck, let’s see if we can find anything he published internally!And I found a few articles I can’t comment on. But there was one unclassified article– “Gambler’s Ruin With Soft-Hearted Adversary”.

The paper was co-written by Lehrer and R. E. Fagen, published in January, 1957. The mathematical content is pretty interesting, but that’s not what stuck out to me when I read it. See, the paper cites FIVE sources throughout its body. But the bibliography lists SIX sources. What’s the leftover?

Academic bibliography, citing six papers related principally to probability. The third paper, highlighted for the picture, is: Lobachevsky, "Analytic and Algebraic Topology of Locally Euclidean Metrizations of Infinitely Differentiable Remannian Manifolds" (Unpublished)

So I sent an email to the NSA historians. And I asked them: hey, when was this first noticed, and how much of a gas did people think it was? Did he get in trouble for it? That sort of stuff.

The answer came back: “We’ve never heard of this before. It’s news to us.”

In November of 2016, nearly 60 years after the paper was published internally, I had discovered the joke.

Bozhe moi!

Very Tom Lehrer to hide a joke so well that nobody would even notice it for most of six decades, while undermining and subverting bureaucratic government processes.

And if you somehow don’t “get” the joke, Wikipedia can both explain and let you listen to the relevant song