I use codex daily and a moderately complex plan + a few files is more than enough context to make it blatantly ignore prompts like "stop and ask before adding new layers or data structures"
6,519 karma · joined March 21, 2012
People have been talking about SMRs being the economic future for over 70 years. It has not happened because it not true.
> Samuel B. Morris, the general manager and chief engineer of Los Angeles’s Department of Water and Power, traveled all the way to Geneva in 1955 to attend the first International Conference on the Peaceful Uses of Atomic Energy. There, he made a case for small reactors, arguing that because the “number of small units…is many times the number of large units,” there could be “economy in development and repetitive manufacture” of the small units.
> But nothing in the history of small nuclear reactors suggests that they would be more economical than full-size ones. In fact, the record is pretty clear: Without exception, small reactors cost too much for the little electricity they produced, the result of both their low output and their poor performance.
For me, SMRs don't pass the smell test. Buying one big plot of land for a reactor, building one power interconnect, having a localized water impact is way easier and cheaper than many. Even if its cheaper to build small reactor vessels, MANY of the other costs become more expensive in larger numbers. Costs that you can ignore while you're just building a prototype.
If it's so much cheaper to build multiple small reactors, just build one big plant with 24 small reactors. Thing is the nuclear reactor part is only 10-15% of the plants full cost: https://world-nuclear.org/information-library/economic-aspec...
2. the article address that specifically:
> The case is an example of Flock cameras being used to arrest a wanted alleged criminal suspected of committing a violent crime. But it is also an example of police surveillance overreach *in that the cameras were specifically used to create a pretext to tack on additional petty crimes* based primarily on where a person’s vehicle had traveled.
The most common lithium battery failure mode is that you have a hole in the plastic separator between the +/- sheets inside the battery, which shorts and causes a hotspot that eventually starts a fire. Dendrites cause the short by growing across the gap. In normal batteries it is caused by a manufacturing defect. The outcome is pretty similar.
An 18650 battery weighs ~50g and stores ~10 watt-hours. 10 watt-hours is 8,604 calories, enough to heat 50g of water by 172 C or 310 F. The battery would not even burn without a liquid electrolyte to ignite.
The difference between gpt 2 and 3 was insane. 2 could generate limericks when it wasn't repeating a word 300x. 3 could actually do some things. By comparison gemini robotics has hardly changed at all.
I will also point out that slow, non-fluid robotics is on a totally different level of difficulty from fast fluid motion. Asimov could walk pretty smoothly, but it didn't fall over because it used a very careful sequence that was never unbalanced; you could pause at any point without falling over. Move faster, like boston dynamics, and you need to account for the change in balance from your arms swinging... or rather, you need to be able to account for the rotational inertia etc from moving multiple masses along complex paths with multiple points of articulation at hundreds or thousands of times per second.
An algorithm to fold tshirts 90% of the time is easy. The cloth hangs down by gravity and you can just look for right angles (corners), find their coordinates with binocular matching, and move them to meet each other. Getting 99%, or folding them quickly, so that the fabric is actually moving instead of just hanging still- incredibly, incredibly more complex.
> In comparison: license plates, when in public, are always visible, and very easy to discern from one-another (different state-unique numbers); so in my mind the expectation of privacy is far lower.
Legally, overhearing a conversation is not different. If you are loudly talking about your drug deals in public in front of an officer, they can use that as evidence. A police department could hire officers to stand everywhere in public and listen to every conversation nearby.
Or, more specifically, they could stand conspicuously close to every payphone and listen. The phones are in public; the officers don't need to be uniformed. Practically speaking this is not at all different from wiretapping. That's what the police did in Katz- wiretap a public payphone.
Flock cameras are not in any meaningful sense different from having officers follow around everyone and record everywhere they go. Its irrelevant whether one officer is following one person or if many people are following them, each within their own small area. That would absolutely not be legal without a warrant. The only difference is a private company is doing it and selling it to the police, something that should clearly not be legal.
Afaik messing with the context also pretty reliably degrades performance still. The model responses reference things that no longer exist to it and it becomes more chaotic.
The real usefulness of parallel or sub-agents is not that they run at the same time, its that they isolate noisy or self-contained context away from the main window.
Say you have bladder pain and chatgpt tells you that is a common indicator of appendicitis. If you go to the doctor and tell them you think you have appendicitis, they will think you are saying your appendix hurts and look for causes of pain in that region. They will not look for bladder-related pain, because you did not tell them what hurts.
Extrapolate that to all the possibilities for all conditions- something that the system is not equipped for. Doctors do not know that bladder pain is a possible indicator of appendicitis because of experience or logic; they know because it is part of their education because the system has learned that over time. The system does not account for people filtering their symptoms through chatgpt.
Further, it's still bad. It still increases the permutations the doctor is required to consider for no reason. Doctors make mistakes- they make mistakes often. Knowing a bit of medicine can be very helpful for patients. Weaponizing them with a predictive text machine is not the same thing.
It may feel easy to say doctors should just consider all the options. But telling them an option is worse than just biasing their thinking; they are going to interpret that as information about your symptoms.
If you feel pain in your abdomen but are only talking about your appendix, they are rightfully going to think the pain is in the region of your appendix. They are not going to treat you like you have kidney pain. How could they? If they have to treat all of your descriptions as all the things that you could be relating them to, then that information is practically useless.
No, not really- the limitation is chemical, not evolutionarily-driven. Earth is very well lit in infrared, but it's very difficult to make a chemical that is biologically useful for seeing infrared because the wavelengths are just too long. Its very challenging to do more than the most primitive kinds of sensing in infrared. If our sun was much dimmer, we would probably be blind, but if not our eyes would still not see in far infrared. Same goes for ultraviolet- the energy is too high and molecular bonds are too weak. Seeing in visible light is a reversible reaction, but ultraviolet wouldn't be.
What you're saying is true of ocean animals, especially in the deep sea. They don't see red very well or at all, but the evolutionary pressure against seeing red is not terribly high except very deep where food is very limited.
There also is evolutionary pressure on our vision, but it has nothing to do with the sun. We're twice as sensitive to green since it is so common and important, but green comes from photosynthesis and not from the color of the sun. In a way, we are most sensitive to the least important color of light- the color that is not absorbed by plants. The wasted, useless byproduct of sunlight is what lets us identify food.
Plus, we actually basically only see in blue and green. The overlap between rods and red/green cones is huge. "red" and "green" as we perceive them are mostly fabrications of our neural circuits- if we were seeing them how our photoreceptors actually receive light, all shades of green/red would be very strongly mixed together. All shades of red would look significantly green except for the very farthest reds, which would look very dark because of low sensitivity.
This is technically true, but structural batteries are not the same as stressed engines like on a motorcycle. In the latter, the engine fully replaces a frame member with essentially just the engine block. With structural batteries the cells themselves are not taking on any stress (they could, but yeah its not a very safe idea) but the outside containment is stil doing double duty. Its a pretty minor weight savings because the battery case does not need to be as strong as the frame does, but its not fair to say that structural batteries are not done. Even when they are just bolting on to a subframe, they're still usually doing things for frame stiffness.
Batteries are not heavy, range is heavy. Range is the sacrifice and sports cars don't need range.
> See how they brag about a simpler new steering wheel that is 400g lighter?
As if ferrari -as if all sportscar manufacturers- have not done the same always. Replacing door handles with straps is not new.
Low satellites are still cooler in the Earth's shadow than they would be in unshadowed orbits, but higher orbits are cooler than either. Not where you'd want to put millions of datacenters though.
There were five separate flights to service the Hubble telescope. It was designed from the beginning to be repaired and upgraded.
If you really think that people in Texas and Florida have the right to say who gets to live in Minnesota, why?
I don't really have respect for this idea; we do this to ourselves far more effectively than people who frankly have a pretty hamfisted cultural understanding- just as we have of china or russia.
IMO influence over real concrete choices is much more alarming. Someone with household-level information has an insane amount of advantage in an election. You can target politcal messaging street by street to play up the worst aspects of your opposed candidate and the least repulsive aspects of your own candidate.
But if you're in china, the most you can do is try to push towards whatever of the two candidates is least bad for you. And spoiler, zero american politicians are pro-china.
> Showcasing it's use on a cruise ship, in a packed stadium
Stadiums will still max out the pipe out of the local area, so I suspect it wouldn't help much. Festivals and cruise ships, where you want to reach people who are nearby (and at a festival, you might even have a good idea via gps which peers are better) are in desperate need of this and idk why apple didnt solve it years ago.
Motors need to be made of laminated steel sheets to reduce parasitic eddy currents. The laminations need to be thin in the direction of the direction of the flux. For radial flux motors you just punch out a shape and stack a bunch of sheets up. For axial flux you have to wind a strip: https://15658757.s21i.faiusr.com/2/ABUIABACGAAgmviFqAYozvPw-...
Each layer of that strip has a different cut in it, so its much more complicated to make. The shape and manufacturing method typically impacts efficiency; YASA avoids that by spending more money. Efficiency is an unavoidable requirement of high power density- heat is the limiting factor, and going from 98% to 96% efficient means double the heat.
The mechanical demands on the motor are also much higher- radial flux is balanced since the magnetic force pulls the rotor from opposite sides. Axial flux motors are usually one-sided, so the magnets are trying to pull the rotor and stator together with incredible force. That also makes vibrations worse. Extremely strong, expensive bearings are required to handle it. With permanent magnet rotors you need a jig to lower the rotor into place; they can't be assembled by hand. That also makes maintenance more difficult and expensive.
Even if seawater was easy to use and datacenters were near the shore, it would produce very saline brine which would be difficult to safely get rid of.
Is inherently incomplete. Not necessarily because they're needed to explain it, but they do need to be brought up at any time possible because they're cool.
On top of that the subsidies for solar installations are mostly frontloaded, since the costs are frontloaded. Annual tax breaks are transferrable, so they get sold at the beginning of the project to offset investment cost, lowering interest payments. Even removing tax breaks would not make existing installations less profitable.
In fact at the limits of performance lasers (and particularly masers) are quite bad at generating straight beams, because they are quite small sources of light and divergence is inversely proportional to the width of the emitter. It is a misconception that they are low-etendue.