HNHacker News
TopNewBestAskShowJobs

Nomentatus

2,040 karma · joined June 5, 2015

submissionscomments
Nomentatus··on Anduril announces Roadrunner, jet-powered VTOL drone
What I've read says that this is a modular system, likely some variants will launch small air to air missles, and others use large shotgun shells to take out drones.
Nomentatus··on USB inventor explains why the connector was not designed to be reversible (2019)
The plug didn't have to be reversible - it could just have had a trapezoidal cross-section. No significant cost.
Nomentatus··on Thomas Edison, Tinkerer
Terrific. Maybe not the most alluring framing.

Could be titled "Hate Elon? OMFG would you have hated Edison! He was way worse!"

Scientists didn't start getting in the way of progress yesterday. It's a tradition:

When the dynamo prototype was finished, it operated so contrary to existing best-practice that Edison was mocked for it. John Tyndall — the physicist to whom discovery of the greenhouse effect is often attributed – wrote in the Journal of Gas Lighting, ‘It is difficult to adequately express the ludicrous inefficiency of the arrangement; but one thing is abundantly certain, and that is that the person who seriously proposed it was wholly destitute of a scientific knowledge of either electricity or the science of energy.’

Nomentatus··on High Z: Metal Foams Shield X-Rays, Gamma Rays and Neutron Radiation (2015)
Multilayered mirrors are another approach. https://inis.iaea.org/collection/NCLCollectionStore/_Public/...
Nomentatus··on Searle's Chinese Room Argument
The closest real world example of the Chinese Room I know about is Richard Feynman's adventures teaching physics in Brazil. His students memorized the textbooks and could manipulate the symbols, and answer test questions correctly,"because they were "almost exclusive teaching and learning by means of pure abject memory." They also never tested their knowledge against that of their friends in discussions, for fear of losing face.

Therefore, when it came to any experiment or application in the real world, the students were as hopeless as if they knew nothing. They had just been playing a symbol-swapping game.

http://calteches.library.caltech.edu/46/2/LatinAmerica.htm

Nomentatus··on Chinese Room Thought Experiment
Also posted 12 days ago: https://news.ycombinator.com/item?id=35808792
Nomentatus··on Wearing an eye mask during sleep improves episodic learning and alertness
Someone needs to sue any manufacturer that uses blue leds on anything that might have to be on at night.
Nomentatus··on Wearing an eye mask during sleep improves episodic learning and alertness
I might mention that, believe it or don't - a living skull is translucent, and our brains can detect light all by themselves. So a mask is good, but not nec a whole solution.

In old experiments, just the light coming in under a door diminished melatonin in mice.

Nomentatus··on Wearing an eye mask during sleep improves episodic learning and alertness
Right. But a dark room is a room in which, if you put your hand in front of your face, you don't see even the faintest outline of a hand.
Nomentatus··on Could we stop Yellowstone from erupting with a giant geothermal power plant?
How poignant, that the obvious solution is the worst "solution" of all, due to human nature.
Nomentatus··on Could we stop Yellowstone from erupting with a giant geothermal power plant?
Not to mention the wooden beams, under the portico, which are also original. They of course, are out of the rain; so are a solution to a lesser problem, where aging is concerned.
Nomentatus··on SVB Hall of Shame
The famous example illustrating PD created by Albert W. Tucker does have no communication - so that parties don't coordinate and cooperate with each other - but in this case with thousands of parties, there was no way to coordinate them all, or communicate with them all in time, or trust them all, so it still counts. It's possible to set up prisoner's dilemmas with communication, say in cases where it's a one off and the parties have every reason not to trust each other's word.
Nomentatus··on Tri-wing aircraft startup claims to reduce fuel consumption by 70%; CO2 by 80%
Taking the fuel out of the wings and thinning them makes sense. You couldn't make this fly in 1959; but I'm willing to bet that you can now with computer control. We should all be ashamed for not having thought of it, I suppose.
Nomentatus··on Organic molecule compositions in samples of asteroid Ryugu
For that to happen, it can't be gravity that keeps a single molecule near long enough for that to happen - dipole forces at a fairly large distance in vacuum over enough time... maybe... at enough distance from the sun. Maybe. Maybe.

Static electrical field from the asteroid, stoked by the sun?

Nomentatus··on Multiple Sclerosis discovery could end disease's chronic inflammation
This fits with a previous study showing that soluble fiber altered biota and reduced symptoms. https://www.inverse.com/mind-body/diet-rich-in-beans-legumes...

FWIW, other research shows that without soluble fiber, we can't absorb choline; we need a bacteria in the gut to transform it into a bioavailable form, apparently.

Choline is getting a lot more attention recently, from researchers.

Notoriously, MS is a disease of the last couple centuries, so far as we can tell, it simply didn't exist before that.

Nomentatus··on What Mary Didn't Know (1986) [pdf]
It is different - not metaphysically or entirely, but... echolocation for humans is rather long-wave (although it's experienced as vision.) You can't - I couldn't - see a door edge wise so I could walk into doors pointed right at me. But bats want it for insect location, I'm betting. Much more precise, much higher frequency.
Nomentatus··on Intel is fighting for its life
Kinda fact-free. Intel is just now going EUV - why decide in advance that Intel is going to faceplant when they do?
Nomentatus··on Did David Hume retract 2 essays on immorality to avoid religious controversy?
I've done this. Re Occam's Razor when that principle was sacrosanct. Wouldn't do it again, I think. Those willing to reword what I wrote more strongly, got the credit, for one thing.

In the end if any one view got me kicked out of Philosophy, it was prematurely defending String Theory - just as a possibility. Politics and my being drugged and assaulted by a Professor were larger factors, though.

Nomentatus··on Did David Hume retract 2 essays on immorality to avoid religious controversy?
Both views are true, his first philosophical book got no traction. Then his Histories made him very famous, and a rewrite of his philosophical views was much better received.
Nomentatus··on Unconditional Love
These days the topic falls under "Secure attachment" as part of "Attachment theory." The phrase "unconditional love" proved thorny and IMHO ill-judged, misleading.

https://www.verywellmind.com/what-is-attachment-theory-27953...

My experience raising children is that you're golden if the child knows you're on their side, putting their interests above your own. Helping them learn, not putting any moral puzzles in front of them that they can't easily solve, together with lots of misbehavior play so they can learn boundaries without actually misbehaving.

"Unconditional love" was just bad philosophy.

Nomentatus··on It's time to put cancer warning labels on alcohol, experts say
Whereas, middle and South America did have a tradition of alcohol in Pre-Columbian times. However, alcohol was often exclusively reserved for those who had attained extreme old age.
Nomentatus··on It's time to put cancer warning labels on alcohol, experts say
It's a very recent trait evolutionarily but seems to predate deliberate alcohol production for the most part. It's been thought that when the human population became very small during an ice age, the ability to eat old fruit under snow might have been very important. But you're right, populations used to deliberate fermentation for thousands of years, such as in China seem to be much better protected.
Nomentatus··on It's time to put cancer warning labels on alcohol, experts say
All organic solvents are a cancer risk for the same reason: they imitate water (an inorganic solvent) inside our cells, but they're not water. Therefore, every single chemical reaction inside the cell is a bit different. Whether inhibited or triggered, or slowed, or sped up. So more reactions are likely to go wrong; perhaps creating free radicals that can rip up any molecule they touch, including DNA.

We are immensely better than other mammals at coping with alcohol (which yeast uses to poison other organisms and so preserve its food sources such as fruit.) Our livers prioritize neutralizing and excreting alcohol; letting other chemicals pile up meanwhile. Hence, just about any medication becomes more toxic if you drink alcohol at the same time.

We like the brain effects, but in truth every chemical reaction in the body is affected.

Speculating, however: some of the cancer risk from modern alcohol sources, however, may come from very long storage. Wine put down for more than the three years nec to sediment out lousy-tasting tannins continues to form Frankenstein flavor molecules (flavinoids) that have unusual tastes because they're random, they don't occur in nature. While flavinoids promote health, the Frankenstein versions of them likely don't and may be a potent extra source of cancer risk, even though we highly value those rare, weird flavors. Evolution hasn't necessarily shaped us to cope with these novel molecules, since we wouldn't have encountered them.

Of course, wine retains many of the very significant health-enhancing virtues of grape juice so it may often not do net harm (esp if the wine hasn't been put down for too long) but you can also buy grape juice.

Nomentatus··on Nuclear explosion impact on humans indoors
Survivor accounts from Hiroshima and Nagasaki make it clear that people who saw the blast and quickly shielded themselves by getting behind a wall and under a mattress did well; the blast wave/shock wave was the greatest danger if you weren't very close to ground zero. However before reading this article I had thought that protecting yourself from heat was the necessary idea, not air pressure/wind acceleration.
Nomentatus··on Tell HN: Windows 10 might have tricked you into using a online account
Indeed. Took me a while to find route around. These issues are forcing me off Microsoft products in general. What a pain, and a betrayal of long-time customers. Interfering with peeps going offline is interfering with security.
Nomentatus··on mRNA vaccines induce higher long-term IgG4 response versus adenovirus vaccines
tangent: I've been saying for some time: "What about a live vaccine?" Meaning an killed-virus version of COVID-19, not an adenovirus with additions. A killed vaccine would present all the proteins and give much better immunity.

But now the answer occurs to me: that's what Omicron and Krakus are doing, too. By now we've all been infected and reinfected, giving us all the value a killed-virus vaccine would have.

You get the RNA vaccine, then mild Omicron that doesn't kill, then mild Krakus that doesn't kill; and then you're as well protected as by getting the killed-virus vaccine, which just takes too long to create.

So maybe the real question posed by this study is, does a subsequent infection by Omicron reverse the toleration induced over time by the RNA?

Nomentatus··on We invested 10% to pay back tech debt
I've known a case way back where deliberate tech debt of a sort was built up by not switching to a more modern compiler for a prototype. The idea was to then do a hopefully-quick rewrite on a more modern setup to obtain the minimal viable product (not a term at that time.)

But Microsoft (who I think probably got wind of this product) announced a very similar product (that never appeared as such, and did not appear at all for at least a decade. The problem was harder than it looked.) Our financial backers immediately and fully pulled out, verbal contracts notwithstanding. With no more cash, the company was dead. A few years later others created just part of this product, and raked in very nice profits for a long time.

If the same prototype had been built on the more modern compiler, that would have been the minimum viable product.

The more modern compiler was one able to use more memory as the 286 cpu allowed.

Nomentatus··on We invested 10% to pay back tech debt
"find someone who speaks both languages and trust them to decide"

This is ideal.

But finding code monkeys that can also tapdance isn't trivial. For some companies, it isn't possible; or HR won't pay the price to hire them. Sometimes management wildly overestimates their technical chops and won't tolerate "bilingual" middle managers because such people are constantly advertently or inadvertently reminding top management of their actual lack of technical knowledge.

So this is where the Fridays scheme comes in; it requires you to gain that trust once, for the one day a week of self-directed work. You might still be able to do that. It also helps prevent dev team "tunnelling."

The author makes clear at the very end of the article that in some companies, even the amount of trust nec to pry loose one day a week can't be obtained, and the Friday scheme won't work.

Nomentatus··on We invested 10% to pay back tech debt
You're right, value tends to multiply product value by a percentage, at a minimum. And can lead to a breakthrough in applications and sales. Which shouldn't be underestimated. Worth pointing out.

But complexity (particularly if you can't squash dependencies) tends to go up by orders of power as sloppy code grows. I think that's their point.

Nomentatus··on We invested 10% to pay back tech debt
I had to laugh. You're (correctly) saying: "Describe it all as a positive additional software feature you're about to introduce." Quite right. Sell the sizzle, don't use the word "vegetable" when telling children what's for dinner. "Internal features" not "tech debt."
Page 1 of 34Next →