New York City Mapped All of its Trees and Calculated the Economic Benefits of Every Single One « Adafruit Industries – Makers, hackers, artists, designers and engineers!
Via Arch Daily Public spaces, squares, and parks in New York City are administered by the city’s Department of Parks & Recreation (NYC Parks). In recent years, the agency has been responsible …
How does the distribution of calories vary by fast food restaurant? Here’s a chart that shows all the menu items for ten of the biggest national fast food chains.
The downward quality spiral: You cut some corners, saving some time and some money. For a little while, you can coast on that. But then demand goes down, you can't get the same pricing, there&…
Insiders: America's largest chain of psych hospitals kidnaps people seeking care, drugs and holds them until they're out of insurance / Boing Boing
Universal Health Services (UHS) is the largest chain of psychiatric facilities in the USA, with 2.5x more beds than its closest competitor, and dozens of whistleblowers from inside the company told…
I have been reading Whiplash, a book I recommended here last week. It starts with the story of the Lumiere brothers, who are credited with the invention of “the moving picture.” As told in Whiplash, the Lumiere brothers started showing films to audiences in 1895 using their patented cinematograph. But by 1900, they were out […]
It's easy to be confused about the difference. "Most" as in the best, the fastest, the cheapest. "Enough" as in good enough. And that means just what it sounds like. If you…
MIT has a storied history regarding hacking where the act is viewed as a “clever, benign, and ethical prank or practical joke” at the University. Hack is also defined as the act of breaking into computers or computer networks. My definition is a combination of both. To me, a hack is a clever or une
How I use Anki to learn mathematics - Less Wrong Discussion
Here is my first less wrong post (after years spent blogging in French). I discoveredAnki on this blog. I'm now sharing the tips I've been using for months to learn mathematics with Anki. Example(s) of deck can be found on http://milchior.fr/Anki/ I'm a French researcher in fundamental computer science, which essentially means that I do mathematics all day long. But my biggest problem is that I'm really bad at learning mathematics. Let me give an example. Hopefully, you should be able to understand even if you don't know the domains I'm using in my examples. One day, I wanted to discover what category theory is. Another day, I wanted to read an introduction to number theory. Two subjects which seem really interesting. And the first pages of those books seems to be crystal clear. After 10 or 20 pages, I have already forgotten the definitions given in the first page, and I am lost. Definitions are not hard, there is just too many of them. Let me emphasize that I'm speaking of learning definitions you understand. As far as I know, it is mathematically useless to learn things you do not understand. (Apart, may be, if you try to learn the first digits of Pi, or some few things like that). In the category theory example, definitions are explained by showing how well-known properties of algebra or of topology are special cases of the introduced category definition. Those examples are really helpful to understand the definitions. Indeed, it allows my mind to go from new notions to known notions. For example, I recall that Epi and Mono are generalization of injective and of surjective. Or of surjective and injective. I can't remember which is which. But at least I know that an arrow can both be Epi and Mono. And even know that I know that Epi in Sets are surjective, I still don't know which of the properties of surjection remains. Which is a trouble since having only the Set example would imply that Epi and Mono imply Iso. And, to solve this kind of problem, a spaced memoriz
(Summary: Cryptographically signing messages with my long-term PGP keys is too important to give up. Doing this on my Android telephone is easier than I thought. You should strengthen your secret key encryption if you’re also going to do this.) Recently, Filippo Valsorda, cryptography expert and TLS guy at Cloudflare, wrote that he was giving up on PGP, or at least on long term PGP keys. I agree with many of his points, especially the complexity of managing those keys, lack of forward secrecy (if someone were to steal my keys, they could decrypt all past conversations, unlike for example Signal) and accessibility (how do you verify a message with a baby on your left arm and your telephone in your right?
The chilling stories behind Japan’s ‘evaporating people’ | New York Post
As a newlywed in the 1980s, a Japanese martial arts master named Ichiro expected only good things. He and his wife, Tomoko, lived among the cherry blossoms in Saitama, a prosperous city just outside...
Our Latest Ebook on Container Monitoring and Management - The New Stack
As we’ve produced The Docker & Container Ecosystem ebook series, it feels like container usage has become more normalized. We talk less about the reasons why to use and adopt containers, and speak more to the challenges of more widespread container deployments. With each book in the series, we’ve focused more on not just moving…
Why AWS Is Good for You (Until It Is Not) - The New Stack
Standing in the lobby of a well-known technology company yesterday, I was struck by how much the world had changed. This company’s sleek video advertising was touting port density, ease of cabling, and adherence to arcane standards. After recently attending the AWS re:Invent conference in Las Vegas, I couldn't help but feel a sense of…
The Internet of today is awash with networking protocols, but at its core lie a handful that fundamentally keep the Internet functioning. From my perspective, there is no modern Internet without DNS, HTTP, SSL, BGP, SMTP, and NTP. Of these most important Internet protocols, NTP (Network Time Protocol) is the likely least understood and has the least attention and support. Until very recently, it was supported (part-time) by just one person.
Searching for Lost Knowledge in the Age of Intelligent Machines « Adafruit Industries – Makers, hackers, artists, designers and engineers!
Fascinating and fun piece from Adrienne Lafrance in the The Atlantic. But the divers had dredged up something even more precious. They wouldn’t realize it until nearly a year later, when museum cur…