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bewaretheirs

1,007 karma · joined November 1, 2014

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bewaretheirs··on 100% test coverage
Branch coverage refers to branch instructions (in the underlying machine code), not a branch in whatever source control system you're using.
bewaretheirs··on Learnings from kCTF VRP's 42 Linux kernel exploits submissions
With respect to Android, I was under the impression that (in part because key members of the Linux community are allergic to the notion of a stable device driver ABI) the specific release of linux used on a particular model of phone was typically frozen at some point before the time the phone shipped, and subsequently only patched as needed.

The mere fact that the source is available doesn't mean that someone will take the (potentially unbounded) time to port it to a future release and test it sufficiently.

bewaretheirs··on JMAP – a modern email open standard
It's available as an alternate protocol in the open-source Cyrus IMAP server: https://www.cyrusimap.org/3.4/imap/developer/jmap.html
bewaretheirs··on Google Photos AI still can't label gorillas after racist errors
Have a link to an example or two? I can't find any after a few minutes of searching.
bewaretheirs··on Wikipedia had wrong Vatican flag for years – now incorrect flags are everywhere
That's because originally they were arms - it's how combatants would identify who was who on the battlefield based on what was painted on their shield and helmet.
bewaretheirs··on Binance commingled customer funds and company revenue, former insiders say
Say you're selling a lightbulb and millions have bought it and then one day the millions of bulbs you've sold to millions of people all explode at the same time.
bewaretheirs··on GPS Independence: Japan plans expansion of QZSS network to 11 satellites
It's a consequence of the orbit's eccentricity - the perigee (low point) in the orbit is to the south. The satellite is moving faster around the perigee, and slower near the apogee (high point) over Japan.

More info here: https://gssc.esa.int/navipedia/index.php/QZSS

bewaretheirs··on IBM PC 8088 replaced with a Motorola 68000
godbolt doesn't seem to think so.

This is a little closer: https://godbolt.org/z/5K4MEYe31

and IIRC there was also the "LEA" instruction ("Load Effective Address") which stored the computed memory address instead of fetching/storing to that address. And I believe some compilers would (ab)use that to do math as well (though this was complicated by the aX/dX register split)

bewaretheirs··on IBM PC 8088 replaced with a Motorola 68000
The register partitioning (eight "data" registers d0-d7 and eight "address" registers a0-a7, with a7 being the stack pointer) was probably the biggest wart.
bewaretheirs··on Westinghouse announces a new small modular nuclear reactor
Germany's replacing nuclear and Russian natural gas with coal.

https://www.npr.org/2022/09/27/1124448463/germany-coal-energ...

https://www.wsj.com/articles/germany-coal-energy-electricity...

bewaretheirs··on Why do ships use “port” and “starboard” instead of “left” and “right?”
And dentists talking about tooth faces have buccal (cheek-side), lingual (tongue side), occlusal (chewing surface), mesial (side closest to center), and distal (the other side from mesial).
bewaretheirs··on Twitter Is Blocking Likes and Retweets that Mention Substack
Substack now says:

"We’re glad to see that the suppression of Substack publications on Twitter appears to be over. This is the right move for writers, who deserve the freedom to share their work.

We believe that Twitter and Substack can continue to coexist and complement each other.

We look forward to making Substack Notes available soon, but we expect it to be a new kind of place within a subscription network, not a replacement for existing social networks."

https://nitter.1d4.us/SubstackInc/status/1644897662255112192 https://twitter.com/SubstackInc/status/1644897662255112192

bewaretheirs··on Mariadb.com is dead, long live MariaDB.org
He sold to Sun Microsystems, not to Oracle.

Oracle then bought Sun.

bewaretheirs··on Evidence of Near-Ambient Superconductivity
Abstract says 10kbar, which is I believe one gigapascal. It's near ambient only relative to prior work (at 267 Gpa).
bewaretheirs··on FDIC Establishes Signature Bridge Bank, N.A., As Successor to Signature Bank
T-bills are short duration (up to 1 year). If they had stuck with T-bills they'd be in better shape today.

SVB reportedly bought longer-duration US Treasury debt which is more sensitive; one source says their portfolio had an average duration of around 5.7 years, up from 4 years a bit over a year ago: http://twitter.com/MacroAlf/status/1634626136364679168

The issue with longer-term debt is that if you need the money now, you can't force the issuer to redeem it before the bond matures - instead, you have to find someone else to buy the bond it from you. And if it's paying half the interest that a new issue would pay, nobody's going to give you face value.

bewaretheirs··on KGB Defector Yuri Bezmenov 1985 Interview – Idealogical Subversion
The Party Secretary of Leningrad even commissioned Dmitri Shostakovich to compose celebratory music for the occasion: https://en.wikipedia.org/wiki/Suite_on_Finnish_Themes

It was set aside but was later rediscovered and was first performed in 2001 by a Finnish orchestra.

bewaretheirs··on How to start a rocket engine
Yes, the Soyuz (the workhorse Soviet/Russian launcher for crew, smaller satellites, and space station cargo) is ignited that way (and it's mentioned at the Everyday Astronaut page linked above, just under the "Ignition on the Ground" heading). There are pyros on top of the wood, so it's really just a really large electrically ignited match.

IIRC the Soyuz family have five ground-start engines (propellant pump sets) which feed a total of 20 main and 12 steering combustion chambers across the center core and 4 boosters, so they need to light 32 of them for each launch.

Multiple combustion chambers per engine was their way to mitigate combustion instability; Rocketdyne blew up a lot of engines before they figured out a different approach (involving baffles on the injector plate) in the Saturn V's F1 engine.

bewaretheirs··on Scientists generate XX and XY cells from a person with Klinefelter syndrome
My understanding is that the master switch for sex determination has been identified as the "SRY" gene normally found on the Y chromosome. Active SRY means development heads down the "male" path in the genes; no SRY (or non-functional SRY) means development heads down the "female" path.

SRY can cross over to the X chromosome (resulting in an XX male), but the end result is usually sterile as there are other genes elsewhere on the Y chromosome that are also necessary for complete development.

bewaretheirs··on Facial recognition tech gets woman booted from Rockettes show due to employer
If the pouches had a tamper evident tool-less ripcord to open it in the event of an emergency, I think that would resolve the concerns about a Bataclan scenario.
bewaretheirs··on Facial recognition tech gets woman booted from Rockettes show due to employer
Many organizations (including the Girl Scouts) have required chaperone-to-kid ratios for trips like this.

Booting one chaperone from a trip could put the entire party out of compliance with the organization's policy and require exclusion of some fraction of the group or possibly cancellation of the trip.

Typical Girl Scout policy here:

https://www.gsnorcal.org/content/dam/girlscouts-gsnorcal/doc...

(Note the requirement that at least one chaperone be female and at least two of the chaperones be unrelated, and note that if you have to split the girls you probably need to send a minimum of two chaperones with each half..)

bewaretheirs··on Soyuz module on International Space Station is leaking something
But what happens when the capsule hits the water?
bewaretheirs··on Balloon framing is worse-is-better (2021)
But see the recent discussion of the failure of a bridge in Norway which used wood beams connected by steel elements -- https://news.ycombinator.com/item?id=33907276
bewaretheirs··on Balloon framing is worse-is-better (2021)
Not odd at all -- when weight is critical, you want to make the most out of every gram of material, ideally getting overall structure, aero skin, and pressure vessel in one.

Rockets with balloon tanks (such as the original Atlas) even rely on pressure from the propellant tank contents to strengthen the structure.

bewaretheirs··on IPv6 Internet is broken
"It's a pity both sides can't lose"
bewaretheirs··on I found a bug in SQLite
The usual form of that proverb in English is "When there's smoke, there's fire".
bewaretheirs··on Judge finds no rights violations in FBI seizure Beverly Hills safe-deposit boxes
If you get a warrant to search a safe deposit box for a gun, and instead find a bloody knife, the plain view doctrine will apply to the knife.
bewaretheirs··on Judge finds no rights violations in FBI seizure Beverly Hills safe-deposit boxes
There is a "plain view doctrine" which says that obvious contraband or evidence spotted during a legal search for something else can also be seized.

https://en.wikipedia.org/wiki/Plain_view_doctrine

bewaretheirs··on An embeddable and customizable fiat-to-crypto onramp
I have no reason to do so, and have better things to do with my time.

I decided early on to stay away from cryptocurrencies; everything in the space I've seen ever since has reinforced that decision. Please respect this.

bewaretheirs··on An embeddable and customizable fiat-to-crypto onramp
I only follow this topic casually but the impression I get is that the existing cryptocurrency offramps are not dependable -- they're either nonfunctional under heavy load or intentionally shut down at the drop of a hat; there isn't an entity like the FDIC to step in to gracefully shut down failing institutions, and let customers get their money out ASAP.

What would be once-per-decade anomalous events with real money seem like an everyday failure with cryptocurrency exchanges.

bewaretheirs··on Age that kids acquire mobile phones not linked to well-being: study
"Why are we using a word that is preferred by only 2 percent but offends as many as 40 percent of those voters we want to win?”

https://www.nbcnews.com/think/opinion/many-latinos-say-latin...

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