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dizzant

397 karma · joined December 5, 2017

PhD student in Electrical & Computer Engineering at Georgia Institute of Technology. Expertise: Robotic motion planning and control. Actively seeking collaborative applied research positions in industry.
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dizzant··on "Ensuring Accountability for All Agencies" – Executive Order
You're correct that the Supreme Court ultimately has final appellate jurisdiction on matters of immunity, but that's a long way from enabling dictatorship.

To get there, we would need to assume that the Supreme Court, including only 3 Trump-appointed Justices, is both unwaveringly partisan and unwaveringly supportive of dictatorship.

dizzant··on "Ensuring Accountability for All Agencies" – Executive Order
That opinion specifically defers to lower courts to define the precise limits of the President's immunity. I refuse to believe that the collective effort of the judicial branch would construct those limits in a manner that enables dictatorship.
dizzant··on "Ensuring Accountability for All Agencies" – Executive Order
I'm no legal scholar, but sure, I'll elaborate as a layman.

During the Presidency, impeachment and judicial review are the important checks. During the transition of power, state-controlled (as in, not federally controlled) elections and Congressional certification are the important checks.

While many people are disappointed with Congress' hesitation to impeach, impeachment as an institutional protection still works as a protection against blatant disregard of the law. Congress faces the threat of re-election practically constantly, and obvious disregard of the law without impeachment is not in Congress' best interest.

Judicial review is clearly working. I don't need to recap the large number of cases that have be brought against the Trump administration this term. The administration is abiding by stays/injunctions, and the Courts are issuing opinions independently. The Supreme Court, even Trump-appointed Justices, has ruled against Trump before and will likely do it again.

State-level control of Presidential elections and Congressional accountability to the public during certification protect against the spectre of a third Trump term or end of democracy. This scenario is extremely unpopular even among Trump supporters and would be a disaster for those in Congress.

The recent Supreme Court opinion about Presidential immunity in his official capacity explicitly defers and leaves to the lower Courts to determine the precise limits of that official capacity. It is beyond belief that the entire judicial branch would collectively enable dictatorship "bEcAuSe iMmUnItY".

dizzant··on "Ensuring Accountability for All Agencies" – Executive Order
In the second quote, the phrases "in their official capacity" and "as the position of the United States" are doing a lot of heavy lifting.

The EO is going out of its way to broadcast that its purpose is to establish a unitary policy position of the executive branch that stems from the President, rather than having "independent" agencies providing contrary position from within "in their official capacity" "as the position of the United States." The logical leap from there to "the President's (unrestricted) opinion is the law (without reference to Congress or the Courts)" is vast.

The EO does not bear on the balance of powers between branches of government, but on the ability for the executive branch to function as a single entity within that balance, rather than a multiplicity of quasi-"independent" agencies.

The disincentives that have always prevented the executive from blatantly violating the law are still in force and unchanged. They have been functional through 250 years of Presidents testing the limits of their authority.

dizzant··on Supreme Court upholds TikTok ban, but Trump might offer lifeline
> TikTok is perhaps the most impressively addictive gambling app ever created.

> Geopolitics aside, I think everyone is kind of aware that gambling is a vice, and like it or not, this could just be the beginning of our society beginning to scrutinize these platforms.

Not really. TikTok isn't a gambling app.

dizzant··on Device uses wind to create ammonia out of air
A hop, skip, quack, jump, and fairly obvious high-energy distillation process away. The national security angle probably isn't a concern here for the same reason that this process doesn't produce good fuel.
dizzant··on Device uses wind to create ammonia out of air
The comments here are focused on how much energy it would take to turn this into fuel. The real story here is decentralized fertilizer production, buried at the end of the article:

> this innovation could fundamentally reshape fertilizer manufacturing by providing a more sustainable, cost-effective alternative to centralized production

The high energy cost of Haber-Bosch, plus the additional cost of transportation from manufacturer to farmer could potentially be eliminated by distributed, passive fertilizer generators scattered around in the fields.

I'm no expert, but assuming sufficient local production, low concentration could potentially be overcome by continuous fertilization with irrigation throughout the growing season.

Let's find out. Some quick fiddling with a molarity calculator and an almanac:

-- 100 uM ammonia -> 1.7 mg / L ammonia

-- 82% nitrogen -> 1.4 mg / L nitrogen

-- My lawn needs around 1 lb / 1000 sq ft, or around 5 g / m2

-- So my lawn needs about 3500 L / m2 of fertilized irrigation total for the season

-- Ballpark farming irrigation is around 0.2 inches per day, or around 5L/m2

I would need to water my lawn about 700 days in the year, or more realistically up my irrigation rate by about a factor of 4, AND source all of the water from the fertilizer box.

I'm a little skeptical that I can allocate space for enough production and still have a lawn left to fertilize. The tech probably isn't ready for the big time on an industrial farm yet, but for research demo, this seems like a promising direction! Much more than concentrating it for fuel.

dizzant··on Diátaxis – A systematic approach to technical documentation authoring
> Many good ideas have been destroyed by too-rigid applications

This is an interesting perspective that I disagree with. You seem to be saying that a general misunderstanding or misapplication of a good idea degrades the idea to a point that "destroys" it.

On the contrary, I believe there is experience to be gained in practice: either the initial idea wasn't good after all, in which case we're destroying an illusion; or the poor examples serve to refine the idea by clarifying some ambiguity that, interpreted wrongly, leads to failure.

Perhaps your argument is that many people may become familiar with the bad implementations and the idea's popularity will decline, depressing demand for refined implementations. This is likely true, but reflects the tragedy of the anticommons, not a degradation in the idea itself.

dizzant··on Physics is unreasonably good at creating new math
This is an interesting take, the article touches on it too.

> “Physicists are much less concerned than mathematicians about rigorous proofs,” says Timothy Gowers, a mathematician at the Collège de France and a Fields Medal winner. Sometimes, he says, that “allows physicists to explore mathematical terrain more quickly than mathematicians.”

GP is right that the currently observed physical laws go far beyond our ability to observe them in reality because of the cost of observations. International effort over decades is required to create facilities capable of making helpful new observations: think of LHC, LIGO, James Webb, etc.

On the other hand, once the facilities are built and ground-breaking observations appear, we suddenly have a debt of theoretical and simulated exploration to understand all their implications. The low cost of computation greatly extends the value we can take from every truly new observation of reality.

In order to observe something new, we must be able differentiate it from something already understood. It seems like the physics and math communities are currently in a season of increasing our understanding of the existing models well enough to motivate trying to break them.

dizzant··on Cooler screens
If this is real, this might be the most helpful thing I learn all day. Thanks stranger
dizzant··on SpaceX Starship rocket explodes minutes after launch from Texas
Great video, thanks for sharing!
dizzant··on Goodbye, data science
Did you happen to attend a prestigious school? I find that the level of rigor (and corresponding freedom) varies tremendously from program to program.

I did my undergrad at a state school with a middling engineering program, where I had ample free time to explore topics in depth, pursue extracurriculars that taught me far more than my classes, and have a thriving social life.

Contrast that experience to what I saw as a teaching assistant at Georgia Tech: undergrads who are so full of classwork that they're punting on the least-valuable graded assignments, never mind extracurriculars. The level of rigor in courses is much higher, but it presses out freedom to explore independently.

Another datapoint: I competed against GT extracurricular teams during my undergrad years, and we beat them handily almost every time because their students couldn't justify high effort for work that wasn't graded. I once saw a GT team arrive a day late to a competition, work on a robot for three hours at the adjacent table, realize their robot did not work, and drive home without competing.

dizzant··on Considering C99 for Curl
Is the original intent of strncpy() germane to the GPs comment? Explicitly stating the max length to copy is an effective tool for avoiding buffer overruns, regardless of whether the designers imagined that important use case.
dizzant··on Red meat is not a health risk. New study slams years of shoddy research
This is a fascinating observation about the funding of nutrition education, thank you for sharing it.

What do you think are the reasons most education efforts are spent on children? It seems to mirror the fact that children spend a significant part of their time on education, while adult education is ad-hoc and self-directed. Are there other factors that you can see from inside the field?

dizzant··on Electric scooter ban increased congestion by 10% in Atlanta
The press release that went along with the study is here: https://iac.gatech.edu/electric-scooters-car-use-atlanta?utm...
dizzant··on Experiments spell doom for physical-collapse explanation of quantum weirdness
> We have largely moved away from viewing humans or “consciousness” as something special.

Who is “we” in this comment? Christianity and Islam emphasize consciousness and the uniqueness of human experience, and their adherents still account more than 50% of the population.

As much popularity as the many worlds theory is gaining, the generic “we” almost certainly still doesn’t believe it, and many (most?) probably don’t even know about it.

dizzant··on Google has added ads on both its search page and Chrome://newtab
The link you posted supports the GP’s assertion that not declaring the current economic situation as a recession is politically motivated. The third paragraph specific cites common criticism of the NBER on that very front.

That there could and should be some more sophisticated, objective definition of a recession than “two years of GDP decline” isn’t in question. But, at least according to your own source, NBER fails to provide that definition and is commonly criticized for is subjectivity during political years.

dizzant··on Walkmp3rson is an MP3 player like Sony never made
I really like the idea of using the motor as a combined power source/user interface component! As the proud owner of a 2004 sedan, hacks to get digital audio on the original stereo are a common daydream of mine.

Maybe Bluetooth low energy could fit in that power envelope too?

dizzant··on The Strid: The ‘deadliest stretch of water’
The appearance of this article on HN strikes an uncanny valley for me. I independently recalled and told a friend about this river just a few hours ago, having not thought of it or done any digital interactions with the idea in probably more than a year. I searched it on DDG to show a picture. Now, suddenly, it’s #3 on HN.

Am I going mad? Is the surveillance state so deep in my subconscious that I fail to notice it’s observations? This article isn’t even tech related, why is it here?

dizzant··on Cloudflare Warp
> Competition keeps people from being evil. Evil only happens when there's no reason for them to NOT do evil things.

I don’t agree. People generally don’t steal, but if they have no food, they will resort to theft to survive. Competition can prevent some ill effects of monopolistic tyranny, which I think is what you’re getting at here, but it breeds other evils.

dizzant··on Riding in a peloton is the most energy efficient locomotion – research (2018)
When motor vehicles do that, it’s called Talladega.
dizzant··on Housing is at the root of many of the rich world’s problems (2020)
I don’t understand the downvotes. Your conclusion is wrong but you make a good contribution. Thanks for the anecdata.

I too have seen this phenomenon, and I think it’s pretty common recently because the used car market is really out of whack. In my case, last year I bought a lightly used Sonata for about $30k with 12k miles, and today I could still trade it for about the same price with 31k miles on it.

Where you’re wrong is that this phenomenon doesn’t apply in general to the used car market but only in the last few years because of the chip shortage shrinking the supply of new cars. Short supply in turn increased demand for used cars, raising the prices.

dizzant··on Simulating an Entire Car Engine (yes, it makes noise) [video]
He discusses the engine in a previous video. The integrator is RK4 with fixed step size (no error adjustment) and constraints are maintained by reaction forces. Numerical instability in that type of system comes primarily from energy added to maintain the constraints.
dizzant··on Pornhub: Judge rules Visa can be sued in abuse claim
Are you defending the position that as a society, we should continue to allow funding the creation of child pornography through means of crypto?

Visa states openly that they weren’t aware of the situation at issue, don’t support child pornography, and have taken steps to avoid supporting it. This isn’t a case of cutting off some “industry”; child pornography is already widely and rightly maligned.

dizzant··on Self-Dialogue as a Journaling Strategy
For me, "no one" translates more accurately to "no one I care about." I keep my journal physically on my person, in the backpack with my laptop. If the backpack is stolen, I actually don't care if the thief reads my notes -- maybe he'll find something of value there. More than likely, he won't care about my interior conflicts.

My wife and friends know not to look through the journal without my permission, and I trust them. If I didn't trust them, I would find different friends.

dizzant··on Self-Dialogue as a Journaling Strategy
As with most things related to the interior life, what works best for you is intensely personal. For myself, I have journaled sporadically for the last decade, as the occasion presented itself.

At first, I bought the notebook to catalogue a trip to Europe. The first pages contain detailed daily logs of about 2 months of my life while I was there. At the time, I recall feeling like I was wasting valuable time that I could spend having more experiences, and there are many missing days as a result. But now 10 years later those pages contain stories I have failed to retain in my memory, and help me to reconstruct the days I didn't record. People and interactions I would have forgotten, short-lived but vivid crushes, a tomato sauce recipe transcribed poorly via a picture dictionary from a retired Italian grandmother at a hostel in Lourdes.

Other times, I've used the journal to clear my head during times of turmoil. Weak and unfinished thoughts on difficult circumstances, poetic images of my emotions, scribbled bullet lists of what happened and in what order as I tried to piece things together.

For a spell, the same journal was where I kept daily todo lists. Today, I'm using it as an outlet for my personal thoughts and goals, to keep them distinct from research notes and work notes. I find that writing them down helps me to clarify what I want and to move in a consistent direction over longer periods than focus and determination alone would allow.

The only consistent format for my journal is putting a date at the top of each entry and writing in pen so I can't erase it.

Every time I look back over what I've written, I take something different away; Rarely do I read what's there and count the act of writing it as a waste of time. It's a window into the past.

dizzant··on I should have loved biology
While retaining the typical high school separation between math, biology, chemistry, and physics, but given control over the curricula taught in those courses, do you think it is possible to teach a single very high-level concept such as the Krebs cycle in full complexity at a high school level (i.e. starting from algebra and very limited science education, completed in four full-time years)? This seems like a foothold for a potentially interesting restructuring of how we educate children, oriented toward depth in a few things to enlighten future breadth. I ask specifically about feasibility, since that seems like a necessary prerequisite to a discussion of beneficial value.
dizzant··on Turns out GCC has imperative argument handling
Wow I needed precisely -Wl,-whole-archive about a month ago to solve a missing symbol issue in a plug-in. I didn’t find the solution then, and moved on to a different strategy. This is why is scroll hacker news! The random tidbits are essential when you need them.
dizzant··on Thunderbird 102
OWA has a known issue with Firefox on Linux where it incorrectly believes that Ctrl is pressed while typing an email. This results in frequent missed characters and spurious actions, including moving focus to the search bar, archiving messages, saving the current message as a draft and closing it, etc. This makes OWA extremely frustrating to use. Another issue with OWA is the unhelpful completions (which I've noted before on HN), which in my experience seem to be related to the spurious actions (more suggested completions = more spurious actions)
dizzant··on Thunderbird 102
This. I've been looking for a new Exchange client since Outlook Web stopped properly supporting Firefox. I reached immediately for Thunderbird, but switched away quickly because of the need to pay for (somewhat clumsy) Exchange integration. If Owl were free, I wouldn't mind the long delays or weird synchronization issues. As a subscription service, I'll take my business elsewhere.
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