placeholder

calculator-app - Chad Nauseam Home

"A calculator app? Anyone could make that." (this was originally a https://x.com/ChadNauseam/status/1890889465322786878) Not true. A calculator should show you the result of the mathematical expressi…

Click to view the original at chadnauseam.com

Hasnain says:

Apps are deceptively easy to make.

Great apps hide all that complexity behind the scenes.

TIL Boehm (yes, that guy, of Boehm GC fame) wrote the android calculator app and went through some reasonably advanced math to get it right.

“With this representation, they're in the sweet spot:

All the digits shown on the screen are always correct. And they almost never show more digits than necessary.

A "computer algebra system" would have accomplished a similar goal, but been much slower and much more complicated”

Posted on 2025-02-17T02:26:26+0000

placeholder

Cosmologists Try a New Way to Measure the Shape of the Universe | Quanta Magazine

Is the universe flat and infinite, or something more complex? We can’t say for sure, but a new search strategy is mapping out the subtle signals that would reveal if the universe had a shape.

Click to view the original at quantamagazine.org

Hasnain says:

“Cornish views Compact as a “low-probability, high-reward” proposition. “If I had to bet, I don’t think they’re going to find anything,” he said. “But the question is so important,” he added, that it ought to be explored “to the fullest extent.””

Posted on 2025-02-16T05:33:25+0000

placeholder

How Noether’s Theorem Revolutionized Physics | Quanta Magazine

Emmy Noether showed that fundamental physical laws are just a consequence of simple symmetries. A century later, her insights continue to shape physics.

Click to view the original at quantamagazine.org

Hasnain says:

“Noether was an assistant in name only. She was already a formidable mathematician when, in early 1915, Hilbert and Klein invited her to join them at the University of Göttingen. But other faculty members objected to hiring a woman, and Noether was blocked from joining the faculty. Regardless, she would spend the next three years prodding the fault line separating physics and mathematics, eventually setting off an earthquake that would shake the foundations of fundamental physics.”

Posted on 2025-02-16T05:21:11+0000

placeholder

How Hans Bethe Stumbled Upon Perfect Quantum Theories | Quanta Magazine

Quantum calculations amount to sophisticated estimates. But in 1931, Hans Bethe intuited precisely how a chain of particles would behave — an insight that had far-reaching consequences.

Click to view the original at quantamagazine.org

Hasnain says:

“Bethe ansatz methods show up in so many places, said Pedro Vieira (opens a new tab), a professor at the Perimeter Institute for Theoretical Physics in Waterloo, Canada. “It seems like nature appreciates beautiful things.””

Posted on 2025-02-14T07:58:53+0000

placeholder

Hasnain says:

Because of course

“The doge.gov website that was spun up to track Elon Musk’s cuts to the federal government is insecure and pulls from a database that can be edited by anyone, according to two separate people who found the vulnerability and shared it with 404 Media. One coder added at least two database entries that are visible on the live site and say “this is a joke of a .gov site” and “THESE ‘EXPERTS’ LEFT THEIR DATABASE OPEN -roro.””

Posted on 2025-02-14T07:22:04+0000

placeholder

Undergraduate Upends a 40-Year-Old Data Science Conjecture | Quanta Magazine

A young computer scientist and two colleagues show that searches within data structures called hash tables can be much faster than previously deemed possible.

Click to view the original at quantamagazine.org

Hasnain says:

Gotta love new breakthroughs. This was really cool and interesting and I’ll have to read the paper

“Farach-Colton, Krapivin and Kuszmaul wanted to see if that same limit also applied to non-greedy hash tables. They showed that it did not by providing a counterexample, a non-greedy hash table with an average query time that’s much, much better than log x. In fact, it doesn’t depend on x at all. “You get a number,” Farach-Colton said, “something that is just a constant and doesn’t depend on how full the hash table is.” The fact that you can achieve a constant average query time, regardless of the hash table’s fullness, was wholly unexpected — even to the authors themselves.”

Posted on 2025-02-12T02:28:22+0000

placeholder

Jordan begins flying medical aid into Gaza by helicopter

Gaza, devastated after more than a year of war, still has urgent shortages of food and medicine. Jordan has begun flying helicopters into Gaza with medical supplies. NPR joined one of the flights.

Click to view the original at npr.org

Hasnain says:

“ARRAF: It was really surreal because you don't see anything living in that part of Deir al-Balah, which has been heavily hit. I mean, really, it - from what we were seeing, it was just rubble. And it's important to note that Israel prevented us, according to the Jordanian authorities, from taking photographs on the ground of what we were seeing. The only thing we could take photos of once we landed were the buffer zone and the helicopter. But to actually see it real, in real life, was really unreal.”

Posted on 2025-02-11T15:51:45+0000

placeholder

Cashing Out Young

Thousands of Microsoft and other high-tech employees have cashed out their stock options, creating a new subculture of young, millionaire retirees. But it’s a world of Volvos, not Jaguars, where the party host dresses just like the caterer, and the question is what to do with your money, not how t...

Click to view the original at vanityfair.com

Hasnain says:

Lots to ponder from this one. I think I’ll come back to this a few times to internalize it. I have various somewhat conflicting thoughts:

* that was a simpler time. tech was a little less evil and more altruistic back then
* I really really resonate with the point back then about fewer people being in tech just for the money
* giving back seemed to be a very common theme, contrasting with the FIRE movement right now
* the avenues one can go into after a successful tech career are pretty much everywhere
* I would love to see a follow up that 1) profiles these same people and 2) profiles folks from the latest set of IPOs
* I wonder how perceptions of the tech people both themselves and in the communities around them have changed
* even without having struck gold things have changed so much with layoffs (and just general poverty)

“Seattle isn’t the only center of newly minted wealth out West. Silicon Valley, the software lodestone 30 miles south of San Francisco, has also produced its share of cash-outs—men and women, most of them still in their 30s and 40s, who made a ton of money off Internet start-ups early in the game and headed (often literally) for the hills, climbing Mount Rainier, trekking in Nepal, watching the sunset from their redwood decks high up in the Santa Cruz Mountains. Because of who they are and where they come from and the way in which they became rich, they’ve spawned a social revolution of such magnitude that it is transforming entire sectors of the West. Unlike people in the ­financial-­services industry, who end up as bond traders or bankers because they want to make a lot of money, “Microsofties” made their wealth serendipitously; for the most part, they tended to be from academic backgrounds—geeky, creative, interested less in striking it rich (until recently, when the Internet got to be like the Gold Rush) than in devising innovative software programs.”

Posted on 2025-02-11T02:13:29+0000

placeholder

Meta Tells Staff Exactly When They Will Be Laid Off: Memo | Entrepreneur

Meta informed U.S. staff in a leaked memo that they would find out if they were laid off on Monday at 5 a.m. PT. Meta plans to lay off over 3,000 workers.

Click to view the original at entrepreneur.com

Hasnain says:

Gee thanks bruh. Good luck to my friends still there.

“She also added that Meta's offices would be open on Monday, but anyone "whose job allows" was allowed to work from home and have the day count as "in-person time." Meta currently follows a hybrid schedule, requiring full-time employees to work from the office three days per week and two days remotely.”

Posted on 2025-02-09T18:56:37+0000

placeholder

Cloudflare Incident on February 6, 2025

On Thursday February 6th, we experienced an outage with our object storage service (R2) and products that rely on it. Here's what happened and what we're doing to fix this going forward.

Click to view the original at blog.cloudflare.com

Hasnain says:

Great writeup as always from cloudflare. I liked this in particular as it called out one of the layering violations that’s not always obvious when working on low level infra; you have to audit all your dependencies to make sure you don’t depend on yourself being up somehow

“>On-call attempts to re-enable the R2 Gateway service using our internal admin tooling, however this tooling was unavailable because it relies on R2.”

Posted on 2025-02-07T06:28:11+0000