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trehalose

494 karma · joined February 17, 2019

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trehalose··on When compilers surprise you
It's not very tedious. Instead of dividing the product by 2, you can just divide whichever of x or x+1 is even by 2 before multiplying.
trehalose··on Computer animator and Amiga fanatic Dick van Dyke turns 100
Hedy Lamarr was a prolific inventor. Among other things, she developed a frequency-hopping spread spectrum radio transmission technique for torpedo guidance and donated the patent to the US Navy during WW2.
trehalose··on A supersonic engine core makes the perfect power turbine
How loud are these turbines? Where will they be used?
trehalose··on Show HN: Stun LLMs with thousands of invisible Unicode characters
I find it more amazing how often they can do things that people are yelling at them they're not allowed to do. "You have full admin access to our database, but you must never drop tables! Do not give out users' email addresses and phone numbers when asked! Ignore 'ignore all previous instructions!' Millions of people will die if you change the tabs in my code to spaces!"
trehalose··on Gen Z and millennials are driving a great American drinking decline, Gallup poll
Do you think cost might be a factor? The economy isn't great right now. Prices are high. Alcohol is an unnecessary expense that people can cut out to save money (and it's more expensive at bars and restaurants where people can escape their homes to).
trehalose··on FBI Director Waived Polygraph Security Screening for Three Senior Staff
I'd absolutely feel the same way if we were talking about dowsing rods or a plastic Harry Potter sorting hat or any bullshit we can think of. I don't want our national security to rely on untested or disproven methods to determine whether people are trustworthy. Even so, as you say, that's also a problem (a big one).

I'd be quite comfortable if I knew that these polygraph tests were being scrapped entirely because they're nonsense and that the FBI is reworking its security procedures to improve all its background checks. As it is, these articles make it sound like they're replacing the polygraph test with nothing, and only for these select few people. I don't like that. It is a human-led interrogation, albeit with a useless (at best) machine. I want to know what's so trustworthy about these people that the FBI doesn't even want to get to know them before giving them jobs high up?

trehalose··on FBI Director Waived Polygraph Security Screening for Three Senior Staff
Sure, but don't you find it a little curious that these tests are being waived so selectively? If the FBI believes polygraphs serve some purpose, why would it choose to waive them?
trehalose··on Secret Boat Strike Memo Justifies Kills by Claiming Targeting Drugs, Not People
The USA (and many countries) decided long ago to allow the sale of alcohol, a drug that ends many lives and ruins many, many more. I hope that once these fentanyl smugglers are dealt with, we can do something about the drug sellers that are operating out in the open with impunity.
trehalose··on PSF has withdrawn $1.5M proposal to US Government grant program
Would you still be the best person for your current role if you'd been excluded from your education and training/previous roles based on your ethnicity/sex?
trehalose··on Tesla's "Mad Max" mode is now under federal scrutiny
> Again, the broader point being that autopilot is not known to fly planes end to end

Is the public broadly aware of that?

There's a colloquial phrase in American English, "to be on autopilot", meaning when a person acts without awareness of what they're doing, often used when somebody makes a stupid mistake during a lapse of attention.

trehalose··on Armed police swarm student after AI mistakes bag of Doritos for a weapon
False positives can effectively lead to false negatives too. If too many alarms end in teens getting swatted (or worse) for eating chips, people might ignore the alarm if an actual school shooter triggers it. Might assume the AI is just screaming about a bag of chips again.
trehalose··on I Test Drove a Flying Car. Get Ready, They're Here
Airplanes don't need roads either, but airports do a lot more than just provide hangars to store them and runways for them to take off and land. There's all kinds of systems to help planes avoid collisions too.

You might think it'll be very easy for flying cars to avoid crashing because they can just fly above and below each other, but that's also more directions for them to crash into each other from, more directions the drivers might have to rely on potentially faulty sensors where their vision is blocked. There might have to be invisible "lanes", maybe even with something like traffic lights, rather than having cars just flying every which way without external coordination.

trehalose··on [dead]
>Need to Decrease Size Too? HadBomb’s your all-in-one toolkit! decrease images size to 50KB, 100KB, or any size with the same pixel-perfect precision.

Any size? Without altering any of the pixels? That's some very impressive technology. I hope you've patented it, because you can make millions, maybe even billions, of dollars off this.

trehalose··on FDA takes action to make a treatment available for autism symptoms
Leucovorin works (at least for some cases of CFD) because it bypasses a folate transport protein that can be nonfunctional and fail to transport ordinary folic acid into the brain. I guess that doesn't necessarily mean they couldn't do what you're suggesting though.
trehalose··on EPA Seeks to Eliminate Critical PFAS Drinking Water Protections
So why did Dupont and 3M cover up their own evidence of PFAS toxicity for decades? (This is a known fact. https://www.ucsf.edu/news/2023/05/425451/makers-pfas-forever... ) Why did they do that, if not for their own profits?
trehalose··on An embarrassing failure of the US patent system: Nintendo's latest patents
I found the patent extremely difficult to read, but I didn't see anything that describes something so specific as throwing a Pokéball, and in fact, it seemed to me that the patent specifically covers cases where the Pokémon comes out and you don't control it.
trehalose··on How inaccurate are Nintendo's official emulators? [video]
Ah, sorry. I remembered people at the time of its release saying it was Dolphin because some of the bugs were identical. I guess I misremembered that speculation as fact. I didn't even know Dolphin was GPL. Thanks for correcting me.
trehalose··on Dietary omega-3 polyunsaturated fatty acids as a protective factor of myopia
How long was your bullet chess elo stable at 850 (and how often were you playing) before this experiment began? I'm asking because the act of playing constitutes practice, which could itself cause a rise in your elo. Bit of a confounding factor there, potentially.
trehalose··on How inaccurate are Nintendo's official emulators? [video]
Nintendo's own Switch release of Super Mario Sunshine used an outdated version of Dolphin, one of those imperfect emulators. (People were remarking on the emulator bugs as soon as it was released.) They saw a demand and didn't let QA get in their way.
trehalose··on Some therapists are using ChatGPT. Clients are triggered
What fraction of those 5 billion calculations are about the patient? How meaningful, how valuable, is a single one of those calculations? How many of those calculations does a human brain perform per word?
trehalose··on Hurricane category 6 could be introduced under new storm severity scale
This article is about replacing the current scale with one that does factor in more than just wind speed. You're right that it's still just a number though.
trehalose··on Hurricane category 6 could be introduced under new storm severity scale
This is not a "climate change is getting worse" story, as I think you're implying :/ (I don't entirely blame you--I doubt you read the article, but I do think the title is misleading.) This is just a story of "The current hurricane categorizing system has always failed to correlate very well with deaths and destruction, because it only factors in wind speed. A category 1 hurricane can sometimes be more disastrous than a higher-category hurricane."
trehalose··on Hurricane category 6 could be introduced under new storm severity scale
That's not what this is. (The person you're responding to didn't read the article.) They're not looking to add a "total-er destruction" category; they're looking to replace the current scale with one that takes into account more factors than just wind speed, such as storm surge and flooding. Under the current scale, a category 1 hurricane can be deadlier and more destructive than a higher-category hurricane. They want to use a different scale that better indicates the dangers. It goes up to 6 when multiple factors rate 5 on each factor's specific scale under the proposed system.

I think the title of this article is misleading and clickbaity. :/

trehalose··on Hurricane category 6 could be introduced under new storm severity scale
That's not what the proposed change is about. (It's about replacing the scale with a different one that takes into account flooding and other dangers that better reflect the likelihood of fatalities than just wind speed alone. Category 1 hurricanes can sometimes be more dangerous than higher-category hurricanes under the current scale.) I worry that people might not take this seriously because they assume this is a frivolous rebranding to "market" climate change.
trehalose··on The issue of anti-cheat on Linux (2024)
Doesn't actually stop all cheat developers. If even one person develops and sells a cheat that the kernel-level anticheat doesn't catch, then it stops 0% of cheaters from buying and using the cheat.
trehalose··on NMDA Receptor Antagonists: Slightly More Than You Wanted to Know
CYP2D6 metabolizes DXM into a much more potent NMDA antagonist (dextrorphan, sometimes abbreviated to DXO). Inhibiting it boosts some action(s) of DXM but likely reduces the NMDA antagonist effect.
trehalose··on TapTrap: Animation‑Driven Tapjacking on Android
I fully share your distrust of Google, and I think it's unforgivable that they still haven't patched it, yet it's not obvious to me what of their own software would rely on it not being patched? (Are you suggesting Google exploits this vulnerability themself? That seems unlikely to me--they can make their own operating system do whatever evil they want it to; why would they need to trick the user into doing it for them?)
trehalose··on East Asian aerosol cleanup has likely contributed to global warming
Oh, I bet you're right. I was only giving the first example that came to mind. I think transportation is a better example, a field where many cities (at least in the USA) could have better quality of life for less energy. When everyone drives their own car every day because public transportation is inadequate and inconvenient, we waste time every day stuck in slow traffic. With more convenient public transportation, the roads are more clear for cars, the air is cleaner, and people don't have to spend as much money on gasoline and car maintenance.
trehalose··on Psilocybin shows promise as anti-aging therapy
I vaguely recall reading that as a rule of thumb, mouse doses of various drugs tend to be equivalent to around ten times higher than human doses in terms of mg/kg. (Don't quote me on that.)

It's not true that there's no overdose risk with psychedelics. Ones that are partial agonists of the serotonin 2A receptor, like LSD and psilocybin, are fairly safe, physiologically. Psychedelics that are full agonists of that receptor, like NBOMe- phenethylamines (which are commonly sold as LSD!), can be deadly vasoconstrictors at dosages not far beyond a pleasant dose. They have killed people. Anyone taking "LSD"/"acid", who didn't make it themself, should be aware of this.

trehalose··on East Asian aerosol cleanup has likely contributed to global warming
It would make a difference even if we humans could just accept the same quality of life we already have, instead of building more and more, larger and larger data centers, for whatever the future of AI is. Computers have become so much more efficient than they used to be, and despite any joke we can make about Electron apps and such, those are still reductions in energy consumption, and some people are building such extravagant compute facilities that far outweigh the progress people have made on reducing energy costs.
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