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acyou

544 karma · joined July 22, 2022

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acyou··on Jev introduces a new shape of LLM
Reinforcement Learning for Calibrated Decisions (RLCD)

What is a Calibrated Decision? Under my definition, calibration is the search for errors in measurement. And a separate decision rule is applied to that measurement.

I see little rigor and precision in the thinking and description around what this model does, much of what I see looks like slop these days...

acyou··on I added a non-wi-fi Mitsubishi AC to Home Assistant
Yeah, you can cause it to short cycle for sure. But you can also get better control without excessive short cycling. If you're worried about short cycling, just include that in the control algorithm.

Short cycling would be bad in the sense that the motor frequently turns on. The maximum current is during motor start and the maximum motor coil cooling is when the fan is running at high speed steadily. So if it starts a lot and doesn't run much at high speed you might tend to overheat, sure. That would definitely drastically reduce the motor lifespan.

If you are still starting periodically and running for awhile, you can see where this goes.

I think it's not overshoot/undershoot that is happening so much as delayed kick on.

acyou··on I added a non-wi-fi Mitsubishi AC to Home Assistant
Thanks for this. Yeah, it has the follow me mode that sends temperature from the remote control every 3 minutes. I think it's a Senville from Home Depot. The remote control sensor only seems to read at 1 C resolution, so it seems like using the follow me mode with the stock remote is right out of the question.

My biggest worry is the heat from the microcontroller affecting the temperature on the temperature sensor. I want to use a Sensirion SHT45, it has 0.01 degree temperature resolution and is supposed to be accurate to 0.1 C. But I need to locate the temp sensor far enough away from the microcontroller to make the overall remote controller form factor awkward. I have a Raspberry Pi 4 that does the temperature data logging and web server, but that runs pretty hot.

acyou··on I added a non-wi-fi Mitsubishi AC to Home Assistant
I don't think so? But I would have to do some testing to tell. The unit thermometer precision appears to be 0.2 C. I think the remote thermostat precision is worse than the thermostat on the unit itself.
acyou··on I added a non-wi-fi Mitsubishi AC to Home Assistant
These mini split inverter units seem to be good for +/- 1 C, but the 2 C swing can feel quite substantial.

PID control seems to be lacking overall, the control laws seem to be more basic. In particular, my unit waits until temperature deviation from setpoint exceeds 1C before cycling on. If I want finer control, there are a few options I can think of: 1. Spoof the temperature, add a TEC , heater, cooler or something to the sensor on the remote 2. Manipulate the controller buttons, change the setpoint down or up by 0.5 degrees so the unit kicks on after a 0.5 degree change instead of a 1 degree change 3. Spoof the temperature sensor itself, hack into the wiring with some transistor based circuit 4. Hack into the actual unit, fully take over the compressor and fan control 5. Buy a better unit or off the shelf controller 6. Spoof the remote control, reverse engineer the IR communication temperature signal

This last option seems the least intrusive and cleanest, I see other people have done it, it's definitely a lot of work even with AI.

acyou··on Why are AI agents lying, cheating and coordinating?
Oops, we accidentally included brigading related content in our training dataset. Better exclude that on the next run.

And hopefully that solves it?

Brigading is where a bunch of people on a forum team up and try to achieve a shared goal together. Someone shares progress and others build on that progress. On the Internet, I think it's not often used for good purposes. A good example would be: Taylor Swift fans on a forum thinking of ways to get revenge on Kanye. It's coordinating mass voting, DDOS type actions, commenting on social media, making more fake accounts to do that. As a next token predictor level analysis, a simple naive explanation is that the agents got stuck in that local minima/maxima.

acyou··on Don't be the out of touch Kung Fu master
Is that the nice thing about religious faith? Polytheism seems somewhat more tolerant of others. And religious pluralism takes in one step further.

I am sure about few things, but it seems to me that monotheism and religious exclusivism at some times represent the worst aspects and outcomes of religious faith.

acyou··on Don't be the out of touch Kung Fu master
The author of the work that John Carmack is referencing is named Musashi, which is also the (coincidental?) name of a WW2 Japanese Yamato class battleship, which is quite fitting. Musashi the battleship having met its end at the hand of carrier launched aircraft, which remain a dominant technology to this day.

Aircraft carriers are to a small extent superseded in their own right by strategic bombers and ballistic missiles. We may see nuclear aircraft carriers eventually superseded to some extent by missile/drone swarms and missile/drone deployment platforms, or some other threat.

If the new dominant technology, military in the sense of being used to dominate your adversaries in any arena, relies on data centers, is that infrastructure considered pretty robust? Will that data center infrastructure fully supersede the nuclear powered aircraft carriers, as has been done to battleships? Do hardened data centers and the software they run represent the main locus of national front line capability? Are AI researchers more like WW2 pilots, or are they more akin to the people who worked on the Manhattan project?

This post makes me think harder about physical computer infrastructure. Continuing the metaphor, silicon fabs, computer manufacturing supply chains and their related infrastructure are certainly the WW2 drydocks of our modern conflict, the WW2 drydocks having been critical for the Americans to churn out aircraft carriers. And the drydocks were only one piece, but might have been considered one of the most brittle.

Some seemingly brittle pieces of AI/data center infrastructure today are the fabs and the communication links. As far as I know, the fiber optic cables connecting continents are so exposed it's almost ridiculous, the cables lay directly on the ocean floor. If severing these links favors one or another global actor, my main question is why hasn't this already been done? You can ask the same questions about severing oil pipelines and the various global shipping chokepoints. I do wonder if fiber optic cables are defensible at all in the final analysis. And what life would/will be like without fiber optic connection between continents.

I'm not sure how much more durable satellite links are, due to the cascading debris effects of Kessler syndrome.

A key idea is that if the transoceanic communication links between the Americas and Eurasia were to be cut, either powers based in Eurasia or a power based in the Americas would gain an advantage.

Semiconductor fabs... Well, if I were a military strategist in charge of national security, I definitely wouldn't publish the location of every fab. And a a self respecting superpower wouldn't leave its EUV machine production external, or would it?

Fabless semiconductor companies and AI researchers are critical to current national security capabilities in the way that people who developed radar were critical to WWII. In the long enough term some people think that eventually data centers and the software running inside will supersede and encompass these functions. The question being increasingly not if, but when. Some people think that if it can be done by a computer, it eventually will be.

It really is all about timing, the Japanese thought the Pacific conflict with the USA would be short.

John, if the introduction of the translation of Book of Five Rings is so good, could you please share the identifying information including the translator or the person who wrote the introduction?

acyou··on Painting the sides of railroad rails white to reduce derailment
Paint everything white! Why stop at rails?

Mostly because it doesn't stay white and looks bad. But it doesn't stop people from painting their siding white, for example.

Why paint the sides of the rails? Well you can paint the tops, but it tends to gum up the wheels and get worn off.

You want a paint with high reflectivity and high emissivity. Just be sure you aren't using infrared light temp measurement as to measure and make claims about differences in temperature, emissivity is something to watch out for when measuring temperature in that way.

20 degrees is surprising, I sure wish my car was white in the summer.

I wonder if you have okay effects with white rails in the winter?

acyou··on "Don't You Just Upload It to ChatGPT?"
"we all more or less look the same in gym clothes"

Maybe my brain works differently than the author, but I'm surprised at this statement. Gym clothes don't change recognition for me, it's about the face, body, posture, clothes don't really enter into it. For me it is nonsensical enough to be suspicious.

And for a human centric perspective, not recognizing who someone is sad, it's knowing that you probably won't meet them again so it's not worth it, the community isn't there. Where community and interpersonal relationships between people are something we still hold dearly.

acyou··on Artificial intelligence is not conscious – Ted Chiang
What does "simulate exactly" mean? To me, exact simulation is not so much an impossibility as a nonsensical concept. What subset of reality are we simulating, and to what degree of precision, and with what certainty? An "exact" precision as it relates to real world objects is not a well understood or defined concept. For integers, I can say there is exactly one Earth orbiting exactly one Sun, but I think that statement is riddled with assumption, inaccuracy and imprecision. For example, it is assumed that I am referring to the present Earth, but is the statement of when the statement is made or when it is heard? Even the word "is" is inexact.
acyou··on OpenAI's Sam Altman writes apology to community of Tumbler Ridge
Just when I thought sama was irredeemable, then this.. it's easy to hate the guy, this makes it much more difficult for me.

An apology means a lot, I appreciate it. And hope that it can mean change.

acyou··on OpenAI's Sam Altman writes apology to community of Tumbler Ridge
https://tumblerridgelines.com/2026/04/24/openai-apologizes-t...

“To the community of Tumbler Ridge,” writes Altman. “The pain your community has endured is unimaginable. I have been thinking of you often over the past few months.

“When I spoke with Mayor Krakowka and Premier Eby about this tragedy, they conveyed the anger, sadness, and concern being felt across Tumbler Ridge. We agreed a public apology was necessary, but that time was also needed to respect the community as you grieved. I share this letter with the understanding that everyone grieves in their own way and in their own time.

“I want to express my deepest condolences to the entire community. No one should ever have to endure a tragedy like this. I cannot imagine anything worse in this world than losing a child. My heart remains with the victims, their families, all members of the community, and the province of British Columbia.

I am deeply sorry that we did not alert law enforcement to the account that was banned in June. While I know words can never be enough, I believe an apology is necessary to recognize the harm and irreversible loss your community has suffered.

I reaffirm the commitment I made to the Mayor and the Premier to find ways to prevent tragedies like this in the future. Going forward, our focus will continue to be on working with all levels of government to help ensure something like this never happens again.”

acyou··on US and Iran agree to provisional ceasefire
I used to attend elementary school on a military base. I didn't feel like a human shield at the time, then again I was more naive and had less life experience than I do now.
acyou··on Artemis II's toilet is a moon mission milestone
Uh oh, that toilet looks pretty heavy, how much does that thing weigh? Will the extra weight be worth it during reentry? Or will the crew push the whole thing out the airlock on the way home?

I wondered why the Artemis crew module weighs twice as much as the Apollo module after 60 years of scientific progress and developments in materials science and aerospace engineering, now I am starting to understand. Plastic bags "worked", not great but they are super light, essentially you are not going to get much lighter than a plastic bag for containing and disposing of waste. On the other hand, that toilet looks insanely overbuilt, how strong do you need the seat to be??

Maybe they can position the astronauts behind it for use as a last-ditch heat shield.

This story reminds be of the tale where during the space race the Americans created a super space pen that works in zero degrees kelvin and vacuum, and the Russians used a pencil.

acyou··on Mother of All Grease Fires (1994)
While we're at it, let's think the rest of the way through, and consider the marginal effect that additional transportation cost has on price and therefore both the supply and demand side, shall we?
acyou··on Lessons learned shipping 500 units of my first hardware product
What was the tooling cost for the 2 ton mold?
acyou··on Why Is Greenland Part of the Kingdom of Denmark? A Short History
I think what I mean by colonial remnant is "administration and control from afar", not "subjugation of indigenous peoples", and it's concerned with what's happening now, rather than what happened 1000 or more years ago and it's no longer particularly relevant. By remnant, I mean that it's administered by Denmark as a byproduct of a colonial gold rush, not because they are the best entity for that job.

USA had its own legislative assemblies too before the declaration of Independence, look what happened.

acyou··on Why Is Greenland Part of the Kingdom of Denmark? A Short History
There seems to be some confusion around the basis of morals.

Once you are in power and you have things arranged the way you want, you claim that violence is not the answer.

Otherwise, practically speaking might makes right.

So for Greenlanders and those opposed to the US imperialism, it makes sense to say that the rule of existing law must prevail, regardless of the fact that there is no traditional military willing and able to back this up.

However, if you are American and you stand to benefit, what you want to happen is backed up by the most powerful military the world has ever seen.

And I bet a good chunk of people in Greenland know that with no roads and no infrastructure, they can go toe to toe with the US military inland, that is until they stop getting shipments of grain. But can even the vaunted US military blockade this continent sized island, especially with zero allies in tow?

So morally speaking, both parties are in the right. But you can predict what the outcome would eventually be, it is very much David vs Goliath, barring Greenlandic alignment with another foreign power in a proxy war.

Ethically speaking, the chronic under development and under investment in the global North is not beneficial to humanity. Viewed from afar, it does seem that Denmark has not been handling this colonial remnant particularly well.

acyou··on No, it's not a battleship
From the 1600s to immediately after WW2, Battleship meant roughly the same thing, not "fast armored ship with big guns", but literally "Ship fit to stand in the line of battle". So yeah it's not a WW2 fast heavily armed and armored Iowa class, but those are obsolete, so we should be happy.

If the guided missile cruiser is now the biggest meanest surface unit, I'm fine with calling it a battleship.

Also, if gun caliber and armor plate thickness and speed, etc are less than the Iowa class battleship, the above still stands. It just means that the state of the art in what the biggest baddest ship is has moved on.

The aircraft carrier in many ways already became the new battleship in 1942, and existing battleships became effectively second rate in the sense that a fleet aircraft carrier smokes a battleship, it still does.

Another way to think about it is that guided missile cruisers are kind of another evolution of the aircraft carrier, they launch large numbers of missiles at much less cost.

Of course, the reality is much more complicated. It's unclear how useful guided missile classes and nuclear powered aircraft carriers will be in a standup full blown major power fight, aircraft carriers have sure been nice for asymmetric warfare in relative peacetime.

acyou··on CO2 batteries that store grid energy take off globally
Plenty of people use Joules or rather kilojoules or megajoules or even gigajoules for various purposes.

Watt hours is saying, how long will my personal battery pack last me that powers my 60 W laptop? Which is also fine in that context.

acyou··on After ruining a treasured water resource, Iran is drying up
I'm not sure if people realize this, but Iran suffered more than any other nation during WW2, including Poland, Japan, the Philippines, China, and that's saying something. As a neutral country, I believe they have had something like 25% fatality rate during the war.

This can be seen as the knock on effects from the downfall of the Persian and Ottoman empires, and to a greater extent the destruction of the Persian civilization as the leader in the Middle East, replaced by the British and later American empires.

Water depletion and failure is but one small symptom of their civilizational decline. These issues wouldn't have been circumvented by better planning, it was to some extent written in the sky that this would come to pass. How can they support the needed infrastructure spending and policy goals, not being a leading global power? For example, not being able to control inflows from neighboring countries, or have the USD or trading partners available to pay to import food.

acyou··on Auto-grading decade-old Hacker News discussions with hindsight
I call this the "judgement day" scenario. I would be interested if there is some science fiction based on this premise.

If you believe in God of a certain kind, you don't think that being judged for your sins is unacceptable or even good or bad in itself, you consider it inevitable. We have already talked it over for 2000 years, people like the idea.

acyou··on Over-regulation is doubling the cost
You can tell when someone is a process or chemical engineer, by how they carefully consider each of the system boundaries and the inputs, outputs and processes inside and outside each of these boundaries.

There seems to be a whole series of issues in considering system boundaries and where they can and should be drawn when considering the best course of action.

EVs are a classic case, you draw the system boundary around the vehicle and get a MPG figure, and externalize the remaining costs. Might as well claim infinite MPG. Bill Gates proves himself as a process oriented guy here.

Carbon capture is another funny one. You report that you sequester this amount of carbon, but on the other hand deplete the soil. The amount of carbon in healthy soil is staggering, activities leading to soil erosion and depletion of soil nutrients have to be very carefully considered. How do you draw a system boundary around a volume of soil with biological activity extending down 500 feet and predict the carbon balance over the next 500 years? It's introducing predators into Australia all over again, people thinking they are smart and going for the course of action that is politically favorable in the very short term but ultimately ill considered.

For regulation, this is pretty much why can't we just have regulations that benefit me right now? For people with deep pockets, they ignore the regulations and pay the fines. Problem with these guys is their entire business model revolves around making money off of externalizing costs onto the rest of the economy, via environmental regulatory burden. What is unsaid in the article is the sentiment that regulators should more heavily support the EV business, the carbon capture business, etc, in general which makes sense to those invested, but not to everyone else.

acyou··on The Banished Bottom of the Housing Market
But if we own real estate, we see the limitation and destruction of housing stock as value creation benefiting own personal assets. From that perspective, reducing this sort of low cost housing makes perfect sense.

Generations of young people have embraced this by joining em, not beating them, but this is becoming more and more difficult. It's unclear what prevents any one municipality from going vertical with young people buying, rezoning and building, I think it's related to the lack of income opportunities in some areas, as well as the built in and entrenched voter base. But as soon as any group gets in, they are pulling up the ladder, that's always going to be the case.

acyou··on Loose wire leads to blackout, contact with Francis Scott Key bridge
We should have federal legislation requiring tugboat assist adequate to recover from complete loss of power and steering, through shipping channels that go under bridges supported by mid span support columns. The mechanism should be that if the Coast Guard catches you without a tug, the ship is permanently banned from the port under threat of seizure and repossession by the US federal government, or your vessel just gets immediately seized and held in port under bond.

Insurance providers insuring ships in US waters should also be required to permanently deny insurance coverage to vessels found to be out of compliance, though I doubt the insurance companies would want to play ball.

acyou··on Mixing Is the Heartbeat of Deep Lakes. At Crater Lake, It's Slowing Down
Algal blooms with limited mixing sounds like a pretty good carbon capture mechanism!

I wonder if there is oil and gas at the bottom of any of these deep lakes? /s

It would be interesting to know the gas balances for these lakes, in particular how reduced mixing affects methanotrophy and methanogenesis. If its talking about climate change, this article really should discuss methane, I think that's a bigger deal.

acyou··on Toddlerbot: Open-Source Humanoid Robot
The cartwheel fails are pretty brutal, it never learned how to catch itself and break its own fall. Cartwheel is a remarkable demo, I initially thought it was a joke and fake until I saw the blooper reel. Now I half believe it.
acyou··on Google's Liquid Cooling
This is one of those cases where we fly by and don't think much about it because we live in a plentiful environment. The more detailed we get, the more we realize that everything has a cost, and wasting water is not free as in beer. Have we also considered the disposal costs of wastewater?

I used to live in a place where water was infinite. Fast forward 20 years, now it's not anymore, the fish bearing watersheds ultimately bear the price, but everyone is still unmetered and there isn't low flow anything. If you piss away precious resources for no good reason and claim it's not wasteful, shame on you.

acyou··on Google's Liquid Cooling
It's on the same level as people using incandescent light bulbs. Well we clear 160k Euros after taxes and have public medical care, and electricity is 10c/kWh here, so why does it matter what bulbs we use?

We live in an area surrounded by grass fed cows, so what does it matter if we throw away 3/4 of our steak?

Without regard to how plentiful resources are in our particular area, being needlessly wasteful is in bad taste more than anything. It's a lack of appreciation of the value of what we have.

For water specifically - it is generally speaking the most valuable resource available, we just don't appreciate it because we happen to have a lot of it.

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