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BYOMesh – New LoRa mesh radio offers 100x the bandwidth

https://partyon.xyz/@nullagent/116499715071759135
137•nullagent•3h ago•41 comments

Why TUIs Are Back

https://wiki.alcidesfonseca.com/blog/why-tuis-are-back/
148•rickcarlino•2h ago•126 comments

Statue of a man blinded by a flag put up by Banksy in central London

https://www.smithsonianmag.com/smart-news/attributed-to-banksy-a-new-statue-of-a-suited-man-blind...
111•dryadin•2h ago•59 comments

Southwest Headquarters Tour

https://katherinemichel.github.io/blog/travel/southwest-headquarters-tour-2026.html
132•KatiMichel•4h ago•23 comments

OpenAI's o1 correctly diagnosed 67% of ER patients vs. 50-55% by triage doctors

https://www.theguardian.com/technology/2026/apr/30/ai-outperforms-doctors-in-harvard-trial-of-eme...
143•donsupreme•20h ago•86 comments

A desktop made for one

https://isene.org/2026/05/Audience-of-One.html
144•xngbuilds•5h ago•54 comments

US–Indian space mission maps extreme subsidence in Mexico City

https://phys.org/news/2026-04-usindian-space-mission-extreme-subsidence.html
34•leopoldj•2d ago•10 comments

Mercedes-Benz commits to bringing back physical buttons

https://www.drive.com.au/news/mercedes-benz-commits-to-bringing-back-phycial-buttons/
503•teleforce•6h ago•297 comments

Bad Connection: Global telecom exploitation by covert surveillance actors

https://citizenlab.ca/research/uncovering-global-telecom-exploitation-by-covert-surveillance-actors/
58•miohtama•4h ago•4 comments

Show HN: Ableton Live MCP

https://github.com/bschoepke/ableton-live-mcp
35•bschoepke•3h ago•15 comments

Security through obscurity is not bad

https://mobeigi.com/blog/security/security-through-obscurity-is-not-bad/
84•mobeigi•6h ago•89 comments

Text-to-CAD

https://github.com/earthtojake/text-to-cad
39•softservo•2d ago•12 comments

Lost in translation: The linguistic challenges facing N. Korean defectors (2025)

https://www.dailynk.com/english/lost-in-translation-the-linguistic-challenges-facing-n-korean-def...
11•spzb•2d ago•2 comments

How far behind is each major Chromium browser?

https://chromium-drift.pages.dev/
137•skaul•4h ago•52 comments

I recreated the Apple Lisa computer inside an FPGA [video]

https://www.youtube.com/watch?v=8jNQDcpHc68
42•cyrc•3h ago•5 comments

Make Your Own Microforest

https://ambrook.com/offrange/environment/a-forest-in-your-pocket
16•bookofjoe•1h ago•0 comments

I built my own hair electrolysis machine

https://www.scd31.com/posts/diy-hair-electrolysis-machine
113•y1n0•4d ago•20 comments

Alert-driven monitoring

https://simpleobservability.com/docs/alert-driven-monitoring
86•khazit•7h ago•36 comments

Metal Gear Solid 2's source code has been leaked on 4chan

https://www.thegamer.com/mgs2-hd-edition-source-code-massive-leak/
160•rishabhd•4h ago•57 comments

What is Z-Angle Memory and why is Intel developing it?

https://www.hpcwire.com/2026/02/05/what-is-z-angle-memory-and-why-is-intel-developing-it/
66•rbanffy•2d ago•25 comments

Talking to Transformers

https://miraos.org/blog/2026/05/02/talking-to-transformers
14•taylorsatula•2h ago•2 comments

Underwater robot tracks sperm whale conversations in real time

https://www.reuters.com/business/environment/underwater-robot-tracks-sperm-whale-conversations-re...
22•thedebuglife•4h ago•1 comments

Nuclear receptor 4A1 linked to health effects of coffee: study

https://sciencex.com/news/2026-04-coffee-doesnt-key-biological-pathway.html
94•pseudolus•9h ago•70 comments

Modern jet engine turbines: each blade a single crystal (2015)

https://www.americanscientist.org/article/each-blade-a-single-crystal
32•whycome•7h ago•6 comments

Cordouan Lighthouse

https://en.wikipedia.org/wiki/Cordouan_Lighthouse
25•Petiver•4d ago•3 comments

Denuvo has been cracked in all single-player games it previously protected

https://www.tomshardware.com/video-games/pc-gaming/denuvo-has-been-bypassed-in-all-single-player-...
164•oceansky•5d ago•62 comments

Infrasound waves stop kitchen fires, but can they replace sprinklers?

https://arstechnica.com/gadgets/2026/05/startup-says-sound-waves-can-replace-fire-sprinklers-expe...
37•0in•1d ago•22 comments

Show HN: Apple's SHARP running in the browser via ONNX runtime web

https://github.com/bring-shrubbery/ml-sharp-web
143•bring-shrubbery•11h ago•36 comments

Brain scans reveal 3 ADHD subtypes

https://www.washingtonpost.com/health/2026/04/30/adhd-subtype-extreme-brain-scans/
70•brandonb•2d ago•52 comments

A couple million lines of Haskell: Production engineering at Mercury

https://blog.haskell.org/a-couple-million-lines-of-haskell/
395•unignorant•21h ago•196 comments
Open in hackernews

Brain scans reveal 3 ADHD subtypes

https://www.washingtonpost.com/health/2026/04/30/adhd-subtype-extreme-brain-scans/
69•brandonb•2d ago
https://archive.is/3a4VZ

Comments

phantompeace•2d ago
Paywalled/emailwalled
Bender•2d ago
Archive [1]

[1] - https://archive.is/3a4VZ

chrisldgk•2d ago
One thing that I can’t seem to parse from the article is why the researchers assume that this is an unresearched part of ADHD and not a different disorder entirely. I’m sure they have their reasons, but I don’t think it’s written in the article.

To me it seems that if it’s not „treatable“ the same way ADHD is, I’m not sure if it’s useful to categorize it as such. On the other hand, I’m happy if kids with this disorder can get a diagnosis and treatment that actually helps them sometime in the future due to this research.

halper•2d ago
It is a good point and I also struggled with that bit somewhat. It is different in so many ways, have different symptoms, does not respond (as well) to the same medication, and affect different parts of the brain. The jump from there to "subtype" was not too logical for me ...
ivewonyoung•1h ago
Diabetes has a similar issue, with type 1 and type 2 having very different causes and pathologies.
pdpi•1h ago
You have a set of diagnosis criteria, and matching those criteria gets you the ADHD diagnosis. This study takes people who fit the diagnosis, and says there's a test you can do to split those people into three groups.

But yes, once they have a better understanding of what that difference means, the next step might well be to split the ADHD diagnosis into two separate disorders, or even that, like cancer, ADHD is actually a whole range of separate but related conditions.

burnt-resistor•1d ago
They've basically "reinvented" DSM-IV ADHD-PH, -PI, and -C more or less, but at least someone's examined the organ responsible rather than treat it like a magical black box.
smj-edison•1h ago
I think the article was honing in on emotional dysregulation which iirc isn't a big component of the DSM-IV definition.
ur-whale•1h ago
https://archive.ph/iAqUj
smj-edison•1h ago
It reminds me that ADHD is really not that useful of a name, executive function disorder would be a more accurate name from when I was looking into ADHD in the past. It's not about attention deficit per se, as that's downstream of struggling with executive functioning. At least it's the definition that lines up with my experience best (I have ADHD). I'll make lists in order to keep track of important tasks (which in theory would help with attention deficit) but then I'll sit down to do the things on the list and... can't. It's such a hard thing to explain, but no amount of attention hacks can get me over the hump of doing the tasks I'm dreading. That seems much more related to executive functioning.
Extropy_•1h ago
I find similar behaviour in myself, particularly that dreading a task makes it significantly more difficult to start. I find that if I can manage to do just a little bit, even just open the application and maybe look around a bit at what I need to do, it really gets the momentum going for me.

Do you think there's anything that differentiates what we might call "general task dread" that perhaps anyone experiences to a certain degree from a more broad executive function disorder? Or is it that dreading leading to task paralysis is one of many symptoms of an executive function disorder?

hirvi74•43m ago
I think the frequency and level of impairment is what differentiates normal executive dysfunction from an executive functioning disorder.

Perhaps a bit rhetorical, but how often does this task dread occur? Does it also ever occur for things you want to do, not just obligated to do?

For me, I experience this issue for many tasks everyday. Then again, I have never had a normal executive functioning, so I cannot claim to know what it is like for normies.

I’ll also add that ADHD is more than just executive dysfunction too.

retrac•16m ago
We all dread things we don't like to do, of course. But there's more than just starting tasks. How are you for task completion?

For me, transferring a load of laundry from the washer to dryer is not an atomic operation. It can be interrupted by almost anything. Oh, I forgot to send that message. Oh, I forgot to check for the parcel. Oh, I need to go to the store today still. And I will walk away and forget to come back and finish. Food prep is the same. I might stop with a carrot half-peeled and go do something else, something that absolutely could wait five seconds for the rest of the carrot.

colechristensen•1h ago
A lot of "ADHD" in children is more like "children don't want to sit quietly and not move while being talked to and made to do things for 8 hours a day" which is less "a disease" and more "this is what it's like when schools are prisons and childhood consists of a fully scheduled attempt to optimize career potential".

In other words, kids want to be kids and they're being put in cages and drugged so they follow their training schedule better.

EA-3167•54m ago
It’s amazing to see a disproven and frankly ancient viewpoint espoused with a straight face here. When I was a kid in the eighties your way of thinking was already defunct.
Akronymus•49m ago
And that viewpoint doesnt even account for adult ADHD/executive dysfunction.
EA-3167•27m ago
Exactly. It also ignore recent genetic testing that's showing how different mental illnesses and developmental disorders cluster around the same dysfunctional gene cohorts. To very little surprise ADHD and Autism appear to be closely related for example.
nkmnz•42m ago
This isn't defunct in any way. To the contrary. I've been diagnosed with ADHD myself and creating an environment that is accommodating to my individual needs has absolutely been in line with what experts recommended to be, and it's been a corner stone of my success.

CBT teaches you to evaluate how to shape the environments your living in so that you can benefit the most from your resources and weaknesses and suffer the least from your weaknesses. For some people, this can include taking stimulants, and this is where I do not condone your parent comment's undertone. Nevertheless, it's been proven over and over again that the rigid system that we call schools does not welcome neuro-atypical students and that we could do a lot more to help those who do not react well to stimulants, who do not want to use them (for whatever individual reason), or simply haven't been diagnosed yet! Allowing for movement instead of forcing to suppress it is a very good example for what could be done. One shouldn't make the mistake to think that this alone would be enough for every single child with ADHD, though. But for some, it could be enough.

driverdan•45m ago
That's not what ADHD is, that's what someone who knows very little about ADHD and has never experienced it themselves thinks it is.
nkmnz•32m ago
Your comment's parent might know very little about ADHD, but your critique shows an antiquated view as well. It's not only the ADHD person that needs to change by any means available so that they fit the expectation of the system. The system, too, is in need of change, so that we accommodate more diverse people. Improving the environment that you operate in goes a very long way and might enable exactly the kind of change that makes children and adults with ADHD thrive. Medication is just one option. CBT and more flexible environments are as important, probably even more so.
colechristensen•30m ago
>Your comment's parent might know very little about ADHD

I know plenty about myself and that label.

nkmnz•17m ago
I agree with the label being a huge problem. It's basically compressing a multitude of individual characters with huge differences on multiple dimensions of behavior into a binary label, which people confronted with someone bearing that label then decompress based on their personal view on the topic, which is like an algorithm trained on caricatures of what society portraits as ADHD. Your comment sounds like you're doing the same mistake: you take your favorite solution for a complex problem, which (I agree here!) might actually be sufficient for some, a relief for many, any at least good or not harmful for everyone else, but you try to market it as the only necessary solution while invalidating everyone's needs that go beyond this solution. It creates the reactions that you can see in already a handful comments that basically call for the individual to accommodate to the system at all cost...
andrewvc•17m ago
There are many people who have the diagnosis and don’t agree with the mainstream perspective on medication etc. Don’t claim to speak everyone.
hirvi74•41m ago
Ok, but what about when those children grow into adults that can’t sit still for 8 hours either? I am in my mid-thirties and I am still waiting for the hyperactivity to die down.
colechristensen•30m ago
Getting the best out of yourself and your environment isn't a matter of waiting to fit in to the sit-down-and-focus shaped life. You have to learn about yourself and learn about how to shape your environment to live your best life, and a major step is not thinking about having that temperament as a disease to be overcome.
aguacaterojo•25m ago
Do you think most people are made to sit still for 8 hours? Do you think someone who can't do that is defective?
dgellow•1h ago
Yeah, it’s a common topic of discussion in the various adhd discussion groups across the internet. Unfortunately changing the name would have some unintended effects because a bunch of regulations and other things are using the current denomination
nkmnz•48m ago
In my mental model of ADHD, executive functioning is at the center of an hourglass-shaped graph. The bottom half consists of multiple "internal" layers/systems (neurological, psychological), in which some deficiency or deficiencies cause a lack of executive functioning (arrows point up from layers down below upwards to the central element of "executive functioning" to visualize the direction of causation). The upper half shows the outward facing layers/system behavior, social relationships, skills; the arrows point only upwards. I don't have any scientific source for this graph, but I never experienced any "ADHD"-related problem that I couldn't understand through this lens. Happy to share my sketch if anyone is interested.
teekert•44m ago
Ah man I feel you. What helped a bit for me is relentlessly trying to get your career focused on only fun things. It's a long term strategy, but I am now a not-so-successful-yet entrepreneur but I do love about 95% of what I do and that makes me do things fast and without it feeling like effort.
zeroonetwothree•43m ago
As they often say, ADHD is about having _too much_ attention and not being able to control it.
jcims•41m ago
I experience the same thing very frequently. I likened it to activation energy in a reaction, that no matter what I did I couldn't create the required electrochemical bias in my brain needed to put ideas into action. It's like being stranded in your own mind, you know what you need to do, but the 'go' just never arrives.

I eventually discovered that the adrenaline response from extreme stress ('if I don't get this fucking thing done by 7:30am I'm fired' kind of thing) allows me to lock in and do the thing.

saltyoldman•7m ago
We need two kinds of managers. Normal managers that manages normal people and ADHD managers that manage the ADHD folk.

The ADHD manager has one extra responsibility. Make the thing due 1 week earlier.

nkrisc•40m ago
For me it’s that as soon as I intend to begin a task, I start thinking about every step, and everything that might go wrong at every step, and planning contingencies for every hypothetical problem, and on and on.

So suddenly the task seems totally overwhelming, when I could just… not do it. So I find a time later I can attempt it and after a few times it is no longer novel and I forget about it.

If anything is hyper-active, it’s the executive function part of my brain that is driven to plan out every tiny, hypothetical detail before I can start.

What’s missing is the reward and internal incentives for doing things when there are other things that do feel good to do (that aren’t what I need to do).

laserlight•6m ago
Executive function problems are a symptom of ADHD, therefore renaming it as executive function disorder would omit the root cause. Dr. Edward Hallowell proposes Variable Attention Stimulus Trait (VAST) as a better name.
JKCalhoun•1h ago
I recall someone posting that the human brain is essentially "overclocked". I don't recall if that was the phrasing but the gist was that our level of intelligence can only exist by skirting the fringes of sanity. Like some set of dynamic differential equations where, if you bump a coefficient, it spins off into chaos.

Perhaps this Brave New World, as opposed to the more agrarian one our species had been accustomed to, pushes many of us over that threshold.

Ey7NFZ3P0nzAe•1h ago
https://en.wikipedia.org/wiki/Critical_brain_hypothesis
mday27•58m ago
Given that this includes rat and mouse studies, it seems like this theory is more around the idea that criticality is a characteristic of how brains work in general, not that human brains hit criticality as a peculiarity of our particularly high intelligence
jona-f•54m ago
So that article does not support the "overclocked" thesis, rather that this critical state is needed for optimal performance. I do agree with the original sentiment, that we are not exactly well adapted to our environment. Or our environment to us, cause this is the main point I think that is missing from this discourse about adhd or other modern frequent mental conditions: too high expectations. Cause of our inherent human narcissism we think we are more attentive and logical than we actually are, so naturally those with lower attention become noticeable first. Or whatever other metric we are measuring leading to whatever condition (depression, autism, ...). At least that mechanism seems underreported in the public. Anyone familiar with how this is viewed on in academia?
msarnoff•1h ago
I think this is me. I was diagnosed with “regular” ADHD a few years ago, but I’ve had issues with rejection sensitive dysphoria my whole life. As a kid I would have a lot of meltdowns when I couldn’t get something right on the first try or made any kind of mistake.

The meltdowns stopped, but I still have issues spiralling into thoughts of failure and being a horrible person when I feel like I’ve disappointed family or friends.

Guanfacine has helped though. Tried a bunch of medications and this is the only one that seems to have made an impact.

kposehn•51m ago
Might be worth giving Qelbree a shot as well. I switched to it last year and...yeah, it' was a complete game changer. Hard to get insurance to cover, but it's been well worth it.
hirvi74•39m ago
Do you have to take it everyday?
copper-float•29m ago
Hey, you've basically described me to a tee as a boy. I had the exact same temperament: meltdowns when I thought I disappointed people, putting myself down all the time for failures and mistakes. My parents weren't even particularly strict.

Glad I wasn't just a weird, overly sensitive kid.

anigbrowl•57m ago
Melissa DelBello, a professor of psychiatry and pediatrics at the University of Cincinnati, said that while brain imaging holds promise, it is still impractical to conduct such scans broadly in clinical settings because they are too expensive and not yet precise enough at the level of the individual.

As if questionnaires and slot-machine prescription medicine treatments are accurate. I don't want to generalize for lack of statistical data, but reports of psychiatrists 'just phoning it in' while providing little actual patient engagement are widespread.

pygy_•33m ago
> Some physicians and researchers have argued for years that emotional dysregulation is not peripheral to ADHD but a central, overlooked part of the condition. Yet this symptom does not appear in the formal diagnostic criteria for ADHD in the manual that doctors use to classify mental disorders. That gap has left clinicians without a clear way to categorize what they’re seeing: Are these children best understood as having severe anxiety, as being on the autism spectrum, or as something else entirely? Or does ADHD itself need to be more broadly defined?

Again and again and again. Psychiatry is an epistemic mess.

Psychiatrists are touristic guides of the Paris catacombs that orient themselves with a map of the subway.

exq•16m ago
"With DSM-V, psychiatry firmly regressed to early 19th-century medical practice. Despite the fact that we know the origins of many of the problems it identifies, its diagnoses describe surface phenomena but completely ignore the underlying causes. Even before DSM-V was released, the American Journal of Psychiatry published the results of validity tests of various new diagnoses which indicated that the DSM largely lacks what, in the world of science is known as, 'reliability', that is, the ability to produce consistent, replicable results. In other words, it lacks scientific validity." ― Bessel Van Der Kolk, M.D.
purple-leafy•25m ago
ADHD is interesting. I think ADHD is mainly an executive dysfunction and reward centre dysfunction, from my own experience.

And a bit of nature, a bit of nurture.

It’s a real double edged sword for me.

On one hand relationships and “boring” tasks feel insurmountable. When I say boring I don’t even mean boring in the traditional sense, I just mean “not novel” - so even something like playing my favourite ever video game gets extremely difficult once the novelty is gone.

On the other hand, as a software developer, working on novel concepts or exploring novel concepts or ideas is basically like crack-cocaine, I literally can’t stop or put them down.

Double edged sword is struggling with most basic tasks, but excelling at the peripheries.

dyauspitr•16m ago
When you put it that way this might be one of the greatest disabilities ever. Humans that don’t complete things they begin and chase novelty are hard to respect because it’s common and trite. Persevering through failure and the hard bits is essentially the crux of achievement, productivity and success.
SubiculumCode•9m ago
Anyone know to what paper this article refers? I don't have WaPo
aidenn0•6m ago
> “They are simmering volcanoes basically,” Rosen said. “When things go wrong, they explode. These are kids who will have hour-long meltdowns, throw things and hit and break things.”

...

> For children with this extreme form of ADHD, standard behavioral strategies may fall short. DelBello said that widely used approaches such as positive reinforcement — like giving prizes or other trinkets, or extra recess for good behavior — do not always have the intended effect.

I'm a former foster parent who adopted kids from foster care. Two of them were diagnosed with RAD[1]. This "extreme form" of ADHD aligns with both my personal experience of RAD and a subset of the symptoms described by clinicians. Attachment issues in general are either commonly comorbid with, or misdiagnosed as ADHD and ODD[2] (the latter of which also somewhat matches the symptoms from TFA).

I don't really have a point here, just an observation I wanted to make.

1: https://en.wikipedia.org/wiki/Reactive_attachment_disorder

2: https://en.wikipedia.org/wiki/Oppositional_defiant_disorder