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brians

2,480 karma · joined January 19, 2014

Chief Architect, Information Security, Akamai Technologies. I do not speak for my employer.
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brians··on Optimizing a Math Expression Parser in Rust
Can you help me understand what’s happening between the split and the filter on “a <space> <space> <space> b”? I expect that to be a series of calls to split, each yielding an empty slice. So the whole iterator yields a slice pointing at a, then a slice pointing at b—but it’s had to handle three intermediate slices to get the b. Right?
brians··on Windows 10 EOL
Well, yes, but it’s much brighter over here beneath the streetlight.
brians··on Oniux: Kernel-level Tor isolation for any Linux app
It’s really, really not. Idiots are ingenious. The operational care to use this in ways that preserve anonymity is beyond most users.
brians··on Good Writing
He was a titan for more than half of the twentieth century. His shadow will extend far into human influence beyond that of many names that won prizes.
brians··on Decreased CO2 during breathwork: emergence of altered states of consciousness
They’re not using a $10 sensor. They’re being very careful which $40 sensor they use. And they’re calibrating the rest of the device to produce an accurate reading across its range.
brians··on xAI has acquired X, xAI now valued at $80B
Yeah. He’s not even the richest African emmigrant… because Mansa Musa tipped so heavily he broke intercontinental trade dynamics.
brians··on The curious surge of productivity in U.S. restaurants
Also Marketplace airs on NPR stations. I have Windows on a Dell, and I hear Marketplace on NPR.
brians··on A better build system for OCaml
Thank you for mentioning this, because—not having followed the link—I thought someone was using Mercury for a backend. And... I wasn't sure I was prepared to follow that link.
brians··on Apple Photos phones home on iOS 18 and macOS 15
It works if you use the Photos app to look at any image with a geo EXIF tag.

But thank you for one more demonstration that even the HN crowd can’t reliably give or deny informed consent here.

brians··on Apple Photos phones home on iOS 18 and macOS 15
Every TCP session leaks some PRNG state for the ISN. That might leak information about key material.

Every NTP session leaks time desync information, which reveals—on modern hardware—relativistic travel, including long airplane trips.

Every software update leaks a fortune about what you run and when you connect.

I don’t think it’s reasonable to ask that people consent to these; I don’t think they can. I absolutely agree that photo metadata is different and at a way higher level of the stack.

brians··on Save Music, Save the Archive
I used to agree. But—Part of what they’re working towards is a demonstration that librarians are gonna do stuff like this, and shouldn’t have to do defensive organizational engineering about their archival projects.
brians··on Senators say TSA's facial recognition program is out of control
There is only one sort of person who signs up to check internal passports and search innocent people, and I don’t care what color shirt they’re wearing these days.
brians··on The 'Return to Office' Lies
It’s a management limit. I’m not sure it’s a failing. I’m a pretty good manager and I’ve worked with some great ones. All of us are better with access to frequent informal communication, shared meals, and walking.

This isn’t about punishment: it’s about how we organize ourselves if we want to create together. I write LARPs collaboratively, and I play tabletop RPGs, too—and those are more fun and more productive and creative in person.

brians··on Rescue Party (1946)
If you like this sort of thing, it’s part of a subgenre called HFY: Humanity, Fuck Yeah. Lots to find from Baen—March Upcountry is one good start, Hymn Before Battle another. Lots of shorts at https://old.reddit.com/r/hfy
brians··on Zuckerberg claims regret on caving to White House pressure on content
Yes, but we have to be careful about double-taxing mortgages for ordinary home-buyers. Those home purchases are already taxed by local municipalities—and in many places that hits the SALT cap.
brians··on Ozempic is changing people's skin, say plastic surgeons
The consensus is clear from the article but doesn’t support the headline: rapid weight loss changes the skin, which recovers over more time.
brians··on Antifragility in complex dynamical systems
It’s trying to highlight a different idea. A robust system can endure damage. An antifragile system grows stronger from damage.
brians··on A wonderful coincidence or an expected connection: why π² ≈ g
Because the cubit is a measure of what a body can reach
brians··on Ask HN: Can anyone from Crowdstrike explain the back story?
I like that framing!

Alternately, they did not ever test the ability of their code to accept arbitrary configurations. That totally could have been done, allowing fast config pushes. But it wasn’t. So as a reliability engineer, I’d point at that change: configs were originally expected to be tested, so the parser was only tested to be sure it showed issues on pre-release testing. Later, they started shipping configs faster than their release cycle, but didn’t check to requalify the parser for this new requirement.

Behind that, I’d look at the engineering and product culture that had that happen. Is there a list of what’s been tested for what purpose? Was the expectation that configs get tested like software written down someplace, and do the roles who scheduled that config release read that place? Who is organizationally set up to notice this, and why is it a director-level IC straight out of xkcd 2347?

brians··on Spending too much time optimizing for loops
I was all set to defend Scheme, which has several extremely high performance implementations—and then realized you probably just meant Smalltalk, an entirely different language, and picked the wrong 1970s minimalist language starting with S.
brians··on The Hidden-Pregnancy Experiment: Could I Hide My Pregnancy from My Phone?
It later turned out Target sent some of those ads to all families, blindly—it wasn’t causally related to the daughter’s pregnancy. Whoops.

But this way makes a better story.

brians··on "She's bouncing the ball" – the uncanny way octopuses play
It sounds like you would prefer evidence of something like Kahneman’s System II as evidence of high intelligence? That is, an abstract general purpose thinking system, even if it is slower and in many ways weaker than the instinctive/trained/evolved systems for solving specific problems?
brians··on Turning an iPad Pro into the Ultimate Classic Macintosh (2021)
Ah, you’ve brought me back to the first time I saw a Mac LC with those options in the Monitors panel, after years with monochrome IIcx, IIsi, and SE/30s. The color bloom, the beautiful gradients—indeed, it was an age of miracle and wonder.
brians··on NASA study finds life-sparking energy source and molecule at Enceladus
Simulation hypothesis: all this may be much younger than we expect.

Nonuniform physics—call it colliding universes or whatever, but the processes that gave rise to life on Earth may not be possible anywhere in this universe now. Including labs on Earth!

brians··on Mystery 'golden egg' found on ocean floor
“The new jewel for the new millennium—the Krieg Light.“ That’s probably the one episode I remember. Thanks for the reminder!
brians··on The Liberty Phone
I’ve routinely had pallets of servers messed with while in Mexican customs lockup; RAM and drives were replaced. Badly.

Until that sort of thing is fixed, it’s not helpful for manufacturing trustworthy devices.

brians··on Tapping Morse code on a wall
Ham radios. The weather. Space weather, because that affects ham radios. Growing old sucks; it's a hobby dominated by the aged. Antennas. Kids these days. We avoid religion and politics, mostly, though there's an increasing segment of MAGA wing nuts who no longer think of their hateful rejection of the majority of their fellow humans as politics. Fortunately, one can spin the dial.

It's the ARRL field day for a few more hours; check out http://websdr.ewi.utwente.nl:8901 near 14100 kHz, looking for 2.7 kHz wide voice transmissions (USB), or near 7200 kHz LSB.

brians··on Why are online recipes so long-winded?
I don’t see this. If somebody’s scraped just the recipes from all these long winded sites, I’d be thrilled! Adding the extra nonsense and narrative doesn’t prevent that.

The reason is SEO; this is Google’s fault.

brians··on How transportation technologies shaped empires
Well, yes. There are plenty of takes on this. The "Traveller" RPG has a nice one: distributed feudal confederation. There's a nominal emperor, but it's hugely important that he never do almost anything, because "his" empire is a lifetime across.

Nearly the only law is that you don't impede the mail system, and that you pay a small tax to support the fleet that will hammer you into the ground if you impede the mail.

brians··on Robert's Rules of Order (1876)
Perhaps your interlocutor was confused with Roget.
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