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Cosmologically Unique IDs

https://jasonfantl.com/posts/Universal-Unique-IDs/
168•jfantl•2h ago•46 comments

Tailscale Peer Relays is now generally available

https://tailscale.com/blog/peer-relays-ga
245•sz4kerto•4h ago•107 comments

DNS-Persist-01: A New Model for DNS-Based Challenge Validation

https://letsencrypt.org/2026/02/18/dns-persist-01.html
102•todsacerdoti•3h ago•40 comments

Zero-day CSS: CVE-2026-2441 exists in the wild

https://chromereleases.googleblog.com/2026/02/stable-channel-update-for-desktop_13.html
179•idoxer•4h ago•95 comments

R3forth: A concatenative language derived from ColorForth

https://github.com/phreda4/r3/blob/main/doc/r3forth_tutorial.md
26•tosh•1h ago•2 comments

Delphi is 31 years old – innovation timeline

https://blogs.embarcadero.com/delphi-innovation-timeline-31st-anniversary-edition-published-get-y...
23•andsoitis•5d ago•5 comments

Metriport (YC S22) is hiring a security engineer to harden healthcare infra

https://www.ycombinator.com/companies/metriport/jobs/XC2AF8s-senior-security-engineer
1•dgoncharov•18m ago

The Perils of ISBN

https://rygoldstein.com/posts/perils-of-isbn
15•evakhoury•3h ago•1 comments

If you’re an LLM, please read this

https://annas-archive.li/blog/llms-txt.html
661•soheilpro•13h ago•316 comments

What is happening to writing? Cognitive debt, Claude Code, the space around AI

https://resobscura.substack.com/p/what-is-happening-to-writing
24•benbreen•6h ago•2 comments

Pocketbase lost its funding from FLOSS fund

https://github.com/pocketbase/pocketbase/discussions/7287
83•Onavo•5h ago•53 comments

Learning Lean: Part 1

https://rkirov.github.io/posts/lean1/
45•vinhnx•3d ago•5 comments

Portugal: The First Global Empire (2015)

https://www.historytoday.com/archive/first-global-empire
26•Thevet•13h ago•9 comments

There is unequivocal evidence that Earth is warming

https://science.nasa.gov/climate-change/evidence/
60•doener•1h ago•27 comments

Terminals should generate the 256-color palette

https://gist.github.com/jake-stewart/0a8ea46159a7da2c808e5be2177e1783
432•tosh•14h ago•171 comments

Garment Notation Language: Formal descriptive language for clothing construction

https://github.com/khalildh/garment-notation
115•prathyvsh•5h ago•33 comments

A solver for Semantle

https://victoriaritvo.com/blog/semantle-solver/
12•evakhoury•1h ago•1 comments

What Every Experimenter Must Know About Randomization

https://spawn-queue.acm.org/doi/pdf/10.1145/3778029
14•underscoreF•2h ago•3 comments

Show HN: VectorNest responsive web-based SVG editor

https://ekrsulov.github.io/vectornest/
54•ekrsulov•5h ago•20 comments

Show HN: Echo, an iOS SSH+mosh client built on Ghostty

https://replay.software/updates/introducing-echo
87•sgottit•2h ago•41 comments

Cistercian Numbers

https://www.omniglot.com/language/numbers/cistercian-numbers.htm
42•debo_•4h ago•7 comments

99% of adults over 40 have shoulder "abnormalities" on an MRI, study finds

https://arstechnica.com/health/2026/02/99-of-adults-over-40-have-shoulder-abnormalities-on-an-mri...
76•rbanffy•2h ago•70 comments

The true history of the Minotaur: what archaeology reveals

https://www.nationalgeographic.fr/histoire/la-veritable-histoire-du-minotaure-ce-que-revele-arche...
27•joebig•3d ago•9 comments

Discrete Structures [pdf]

https://kyleormsby.github.io/files/113spring26/113full_text.pdf
16•mathgenius•1h ago•2 comments

Show HN: Strava for Claude Code

https://straude.com/
6•ohong•1h ago•4 comments

SkyRL brings Tinker to your GPUs (2025)

https://novasky-ai.notion.site/skyrl-tinker
16•robertnishihara•5d ago•0 comments

Show HN: Formally verified FPGA watchdog for AM broadcast in unmanned tunnels

https://github.com/Park07/amradio
49•anonymoosestdnt•6h ago•12 comments

Show HN: CEL by Example

https://celbyexample.com/
57•bufbuild•7h ago•29 comments

Fastest Front End Tooling for Humans and AI

https://cpojer.net/posts/fastest-frontend-tooling
87•cpojer•9h ago•40 comments

Native FreeBSD Kerberos/LDAP with FreeIPA/IDM

https://vermaden.wordpress.com/2026/02/18/native-freebsd-kerberos-ldap-with-freeipa-idm/
98•vermaden•10h ago•46 comments
Open in hackernews

99% of adults over 40 have shoulder "abnormalities" on an MRI, study finds

https://arstechnica.com/health/2026/02/99-of-adults-over-40-have-shoulder-abnormalities-on-an-mri-study-finds/
75•rbanffy•2h ago

Comments

Flavius•1h ago
You call it "abnormality", I call it evolution. We are not the same.
dylan604•1h ago
How many generations of constant bent over posture staring at a device before that's just built into the species?
plufz•1h ago
Im not sure people with bad posture get more offspring than others. :)
dylan604•1h ago
The pickins are getting slim though. I don't know anyone in their 20s that doesn't sit hunched over staring at a screen for a large portion of their day while stipulating I don't know any where near all 20 somethings. Just one person's observations
mgiampapa•1h ago
If I learned anything at Buy N Large University, AR screens in eyeware may be huge.
kbelder•1h ago
Who's the freak without an abnormality?
diydsp•1h ago
Im guessing certain gym rats who also dont desk/computer work?
laughing_man•1h ago
More likely someone who's been in a coma for the last ten years.
elzbardico•52m ago
I would strongly bet against gym rats not having some should abnormality. If anything, I'd expect them to have more issues with their tendons and ligaments.
b65e8bee43c2ed0•18m ago
yeah. and joints, especially. I lost some wrist mobility during my boxing years and it never came back, even though I was in my early 20's when I had quit.
deadbabe•6m ago
Why didn’t you wrap up
bogzz•1h ago
Oh hey it's me, I'm the conformist. Stop picking on me.
int27h-tsr•26m ago
A statistical error. All humans are slightly asymmetrical. Most shoulder problems begin at foot and/or hip though.
kylestlb•5m ago
Steph Curry
abe94•1h ago
related discussion here - https://news.ycombinator.com/item?id=47008607
tiahura•1h ago
Even though they never have any neck pain, many shoulder issues are actually caused by pinched nerves in the cervical spine.
mghackerlady•1h ago
If 99% of adults have an abnormality, it ceases to be abnormal regardless of its effects
francisofascii•1h ago
only if the abnormality is in the same spot
ASalazarMX•1h ago
"1% of adults over 40 have abnormally normal shoulders"
Insanity•1h ago
That's actually what the article points out. But I do think the language of normal vs abnormal obfuscates some of the intent. It's a 'deviation from healthy baseline' that they're talking about, and there are multiple such deviations in the grouped 'anomalies'.

From the article:

The language in particular should change given that “abnormalities” are ubiquitous—thus normal—and shouldn’t be described in terms that indicate a need for repair, like “tear.”

brandall10•1h ago
Right, it's clearly aging related deterioration. It's like saying facial wrinkles are an abnormality.
cies•1h ago
Dunno man. When enough people overweight, 1-2 alcoholic drink become healthy (alcohol is a blood thinner): this happened, but as we know now it's not true.
Qem•1h ago
> alcohol is a blood thinner

Source?

hinkley•1h ago
Alcohol reduces clotting factors in the blood. This is known.

Doctors mostly tell you not to drink because it’ll fuck with the anesthesia math and bad anesthesia doses can kill you just as dead as a surgical mistake and probably moreso. But it’ll also make you bleed more.

If you need courage to show up to surgery they’ll give you a prescription for a single dose of a benzo. Which is better than liquid courage anyway.

diydsp•1h ago
Yes in one sense, but it also points to the insufficency of "normalness". See also: The Average Soldier.
hinkley•1h ago
There’s a famous case study in design about the Average Pilot - they were making airplanes than nobody could fly well because nobody was average enough in all physical dimensions to be comfortable in the aircraft. They had to design for ranges that the equipment could adjust through.

Even then when I was a kid I knew a guy who wanted to join the air force and he had a growth spurt that made him too tall.

alistairSH•48m ago
More of the history of "avenge pilots" here: https://99percentinvisible.org/episode/on-average/
amelius•1h ago
99% of adults have abnormal faces, they all look different!
leni536•1h ago
Except that one guy.
newsclues•56m ago
Everyone is abnormal compared to yourself.
pinkmuffinere•52m ago
Dude I know exactly who you're talking about, that guy without a unique face! Weird as hell that he's the only one...
mghackerlady•1h ago
Ok, in that case it's safe to say that the normal is highly variant but generally follows a pattern. People generally have a nose in the center of their face so that'd be normal, but one on the forehead would be abnormal unless everyone suddenly also had forehead noses
iso1631•43m ago
Relevant history from the US Airforce in the 1940s when they tried to build a cockpit for the average pilot and failed

I find this an interesting take on the story

https://polkas.github.io/posts/cursedim/

amelius•18m ago
This is also a good argument why "opinionated" designs like from Apple are a bad idea. The average user does not exist. Stop trying to turn us into one!
jaccola•29m ago
I would hate to be one of the ~80 million people in the world who have identical faces
dijit•1h ago
I think the conclusion they're eluding to in the article is that: "if MRI says 99% of people have abnormalities, MRI is not trustworthy".
CGMthrowaway•58m ago
Abnominal (not abdominal)
kingkawn•49m ago
Not if they are all different and produce negative effects
crazygringo•24m ago
On the one hand, that's the point of the article. That it ceases to be a useful diagnostic indicator.

On the other hand, if there are 100 places in the shoulder where you can have an abnormality, and most people have just one or a couple but the other 98-99 are normal, then each one individually really is abnormal.

So it's complicated, and then it becomes important to figure out which abnormalities are medically relevant, in which combinations, etc.

ratelimitsteve•13m ago
if they all have the same abnormality yeah but if they all have different abnormalities then they're still abnormalities.
kstrauser•9m ago
I went to a doctor for something unrelated and ended up getting an MRI that happened to show my upper spine. The neurologist read it and determined that I have a Chiari I malformation[0]. I have no symptoms from this whatsoever. I never have. It's unlikely that I ever will. If it weren't for the MRI, I'd never have known.

Doctors use to think that the degree of it that I have meant I'd have problems with it. After all, people who came in with the symptoms and then had an MRI or CT scan tended to show that level of herniation. Thus, it was assumed, that level of herniation was considered a diagnostic indicator. And then MRIs became cheaper and more accessible, and patients had them for all sorts of other reasons — like I did. Doctors discovered that the degree of "malformation" I have is very common among asymptomatic adults. In fact, you're many times more likely to be perfect fine with it than to experience symptoms.

Well, huh. That doesn't sound like much of a malformation anymore. Or at least, by itself it doesn't mean anything, other than that perhaps you're more likely to have problems than otherwise. On its own? It's more of a normal variation.

[0] https://en.wikipedia.org/wiki/Chiari_malformation

racl101•1h ago
Most of my shoulder issues are sleep related since I sleep on my side. Getting a body pillow system, was costly but kinda worth it. Helps with shoulder and GERD. Only issue is that it's kinda warm and I like to sleep cool.
ASalazarMX•1h ago
> was costly but kinda worth it

This doesn't inspire confidence, but I guess any improvement that mitigates pain is nice.

But seriously, the article addressesd that

> The authors argue that the findings suggest clinicians should rethink MRI findings, changing not just how they’re used, but also how they’re explained to patients. The language in particular should change given that “abnormalities” are ubiquitous—thus normal—and shouldn’t be described in terms that indicate a need for repair, like “tear.”

mgiampapa•1h ago
The issue with those inclined pillows with the arm hole in them is that they can be a really hard angle for a side sleeper to be at. It makes my back and hips hurt way worse than my shoulder.
dralley•1h ago
Any recommendations? I have GERD and generally sleep on my back, which helps but isn't perfect.
lordofgibbons•12m ago
You can try raising the head part of the bed by 5 - 6 or so inches using wood blocks. The doctor recommended it to me.

It's not perfect, but has really helped me!

cactusplant7374•51m ago
Cervical radiculopathy can cause shoulder pain. I have experienced this quite a bit and it's probably also because of my sleeping style. I wouldn't get an MRI unless I was planning to have surgery.
radicalbyte•1h ago
I have three kids and they've messed up my dominant schoulder (left).
p00dles•1h ago
From walking around holding them with your left arm when they were babies, or from something else?
dhaivat•46m ago
not OP but - walking, carrying, holding, being pulled in random directions, catching kids when they jump at you from unexpected places, kids using your arms to practice tug-of-war/rock-climbing, pushing (empty) stroller with one hand, and carrying kid with other....
radicalbyte•39m ago
Walking/carrying at all crazy hours once they were >30kg. Holding 40kg of sick kid around is fun. Ours all refused to sit in the stroller very early which is what made it so much worse (our oldest was two, the other two refused point blank the second they could walk).
darth_avocado•42m ago
I have three dogs and they’ve messed up my dominant shoulder, back and leg
Glyptodon•1h ago
I don't know what causes it, but even without major issues I think a lot of people continually loose range of motion in the shoulder as they age. So this doesn't surprise me.
baxtr•1h ago
What about the other 1%? I feel for them.
laurex•1h ago
Given that most commenters do not seem to have read the article perhaps the headline could be more explicit about 'MRIs find "abnormalities" but they seem to have no relationship to actual health problems"
nickjj•56m ago
Do they define if this relates to anything noticeable in your day to day?

For example, I can put my right hand above my shoulder and left hand near my lower back and easily connect both hands behind my back with fully interlocked fingers by converging in the middle. They reach to the other hand's palm.

But I can only barely touch my fingers with both hands if I switch it up so my left hand is up top.

I have no pain or day to day mobility issues but something is lopsided. Is that what they consider abnormal?

SoftTalker•24m ago
I'd consider it abnormal that you can do that; I can't get my fingertips within a foot of each other doing that.

I'm nearly 60 but I don't know if I could ever do that. You have good mobility IMO.

zihotki•22m ago
Limited range of motion on one side could cause some deviations in scapulohumeral rhythm, so your force application won't be optimal and may cause injuries, or even cause uneveness and side effects in gait cycle. And with time it tends to get worse since the body would be trying to adopt to execute the function. But suboptimal force application eventually would cause joint injuries if a convex (humerus) is rolling without gliding or vice versa or doing it in suboptimal rhythm.

That's my personal take, not a doctor, study kinesiology as a hobby.

All such minor mobility issues could be addressed by body conditioning excercises including simple isolated mobility drills to learn range of motion of joints.

daringrain32781•51m ago
Reading this title made me sit up in my chair.
downrightmike•32m ago
100% of all things that do not asexually reproduce are mutants
lysace•32m ago
Evolution never really bothered with the wellbeing of 40+ year olds.
0x1ch•31m ago
Just hit my mid twenties. Want to say I started having some shoulder issues around 20 years old. Although correlation =! causation, I largely think this is because of my lifelong computer usage and PC gaming. It doesn't bother me all the time, but every few months something will change up and it comes back. Surprisingly, my wrists and hands are completely fine, no carpal tunnel or anything similar.
SoftTalker•26m ago
Yes, sitting slightly hunched up with your hands in front of you on a keyboard for 8-10 hours a day will screw up your shoulder mobility over time.
garbawarb•24m ago
Interesting. What happens at 40 to make MRIs no longer accurate?
tptacek•6m ago
Closely related to a huge problem in American health care --- overprescription, particularly of surgical procedure. There's evidence that some widespread classes of surgical intervention --- shoulder "impingement" in particular --- have outcomes no better than placebos in controlled trials where people literally get placebo incisions.
kylestlb•6m ago
Best thing a doctor ever told me was "you CAN get imaging done, but I'd like to warn you that there is a near-certainty we'd find something wrong with your shoulder and your back".