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Simulating and Visualising the Central Limit Theorem

https://blog.foletta.net/post/2025-07-14-clt/
62•gjf•3h ago•15 comments

UK government states that 'safety' act is about influence over public discourse

https://bsky.app/profile/tupped.bsky.social/post/3lwgcmswmy222
79•JoshTriplett•59m ago•36 comments

Blurry rendering of games on Mac

https://www.colincornaby.me/2025/08/your-mac-game-is-probably-rendering-blurry/
322•bangonkeyboard•11h ago•208 comments

Lessons learned from buying an open source repo

https://www.coplay.dev/blog/lessons-learned-from-buying-an-open-source-repo
8•josvdwest•2d ago•6 comments

Gemma 3 270M: Compact model for hyper-efficient AI

https://developers.googleblog.com/en/introducing-gemma-3-270m/
675•meetpateltech•18h ago•262 comments

We rewrote the Ghostty GTK application

https://mitchellh.com/writing/ghostty-gtk-rewrite
316•tosh•12h ago•126 comments

Why LLMs can't really build software

https://zed.dev/blog/why-llms-cant-build-software
606•srid•20h ago•354 comments

I used to know how to write in Japanese

https://aethermug.com/posts/i-used-to-know-how-to-write-in-japanese
110•mrcgnc•9h ago•104 comments

Blood oxygen monitoring returning to Apple Watch in the US

https://www.apple.com/newsroom/2025/08/an-update-on-blood-oxygen-for-apple-watch-in-the-us/
399•thm•20h ago•289 comments

Making reliable distributed systems in the presence of software errors (2003) [pdf]

http://erlang.org/download/armstrong_thesis_2003.pdf
60•vismit2000•4d ago•7 comments

I made a real-time C/C++/Rust build visualizer

https://danielchasehooper.com/posts/syscall-build-snooping/
315•dhooper•18h ago•64 comments

Show HN: OWhisper – Ollama for realtime speech-to-text

https://docs.hyprnote.com/owhisper/what-is-this
201•yujonglee•18h ago•53 comments

The new science of “emergent misalignment”

https://www.quantamagazine.org/the-ai-was-fed-sloppy-code-it-turned-into-something-evil-20250813/
69•nsoonhui•10h ago•31 comments

Galileo's Telescopes: Seeing Is Believing

https://www.historytoday.com/archive/history-matters/galileos-telescopes-seeing-believing
17•Hooke•3d ago•2 comments

Citybound: City building game, microscopic models to vividly simulate organism

https://aeplay.org/citybound
105•modinfo•11h ago•36 comments

Steve Wozniak: Life to me was never about accomplishment, but about happiness

https://yro.slashdot.org/comments.pl?sid=23765914&cid=65583466
716•MilnerRoute•15h ago•448 comments

Show HN: I built a free alternative to Adobe Acrobat PDF viewer

https://github.com/embedpdf/embed-pdf-viewer
264•bobsingor•18h ago•56 comments

Streaming services are driving viewers back to piracy

https://www.theguardian.com/film/2025/aug/14/cant-pay-wont-pay-impoverished-streaming-services-are-driving-viewers-back-to-piracy
840•nemoniac•17h ago•646 comments

What does Palantir actually do?

https://www.wired.com/story/palantir-what-the-company-does/
316•mudil•1d ago•304 comments

Org-social is a decentralized social network that runs on Org Mode

https://github.com/tanrax/org-social
153•tanrax•1d ago•59 comments

DINOv3

https://github.com/facebookresearch/dinov3
130•reqo•14h ago•22 comments

Launch HN: Cyberdesk (YC S25) – Automate Windows legacy desktop apps

62•mahmoud-almadi•18h ago•45 comments

Architecting large software projects [video]

https://www.youtube.com/watch?v=sSpULGNHyoI
113•jackdoe•3d ago•50 comments

Snapshots of Kids Bike Jumping in the 1970s

https://flashbak.com/snapshots-of-kids-bike-jumping-in-the-1970s-476580/
43•bookofjoe•3d ago•26 comments

Is chain-of-thought AI reasoning a mirage?

https://www.seangoedecke.com/real-reasoning/
163•ingve•20h ago•144 comments

Airbrush art of the 80s was Chrome-tastic (2015)

https://www.coolandcollected.com/airbrush-art-of-the-80s-was-chrome-tastic/
84•Michelangelo11•14h ago•39 comments

Teenage Engineering's free computer case

https://teenage.engineering/store/computer-2
65•textadventure•5h ago•39 comments

Progress towards universal Copy/Paste shortcuts on Linux

https://mark.stosberg.com/universal-copy-paste/
112•uncircle•2d ago•134 comments

OneSignal (YC S11) Is Hiring Engineers

https://onesignal.com/careers
1•gdeglin•13h ago

Time to End Roundtripping by Big Pharma

https://www.cfr.org/blog/time-end-roundtripping-big-pharma
83•luu•9h ago•53 comments
Open in hackernews

Snapshots of Kids Bike Jumping in the 1970s

https://flashbak.com/snapshots-of-kids-bike-jumping-in-the-1970s-476580/
24•bookofjoe•3d ago

Comments

mikestew•3d ago
Convince me that the kid in the first photo clears the entire line of kids before landing.
gibbitz•3d ago
I had the same thought. The kid in the end is looking into the camera like he knows he's about to be cut in half.
alexjplant•3d ago
> less restricted, less supervised, less obsessively safety-conscious things were – and it was fine.

Is this site made for the Facebook demographic? I was astounded that there wasn't a poorly-made image macro of a minion with some quip about drinking from a garden hose or rubbing dirt in your wounds to accompany this idyllic gem.

Both of my parents have stories about people getting seriously messed up or killed back in the day by doing dumb stuff on bicycles or otherwise. My father was on a first-name basis with hospital staff when he was a kid because of these types of hijinks and always made my brother and I wear helmets when we rode bikes. If we were skating pads were mandatory too. There's a comfortable middle ground between never setting foot outside and getting your viscera fatally crushed by a 130 lb eighth grader's bicycle tire.

And yes, I've built and jumped kicker ramps, tore my knees open, looped a bike (in both directions), skitched, gone OTB into a ravine in the woods, etc. but the difference is that I never had to go to the hospital or nearly died.

Cool photos regardless but let's not pretend that any of this was smart. Having common sense and wearing protective gear when you have fun is cool, not uptight.

LargoLasskhyfv•3d ago
No risk? No fun! No pain? No gain. Call it evolution in action, or something. The unfits get sieved out by winning darwin awards.
gibbitz•3d ago
This is a bit harsh on the HN community IMO. This was all nostalgia to me and not about overprotective parents. that said, looking at it in that light, my kids had none of the experiences you did. I think the overprotective instinct of this generation's parents has been steadily teaching them to be more risk averse and protecting them from learning about how to deal with undesirable outcomes to a point of irrational fear. My kids are in this generation and despite having this opinion they're surrounded by other adults and media that teaches them, not how to deal with mistakes, but to avoid them at all costs. I'm not advocating death and dismemberment, but there has to be an in-between.
alexjplant•3d ago
> there has to be an in-between.

1000% agree and that's exactly the point of my comment. I didn't mean that all of HN is like this, mostly just the linked post, so I'll edit accordingly.

alexpotato•3d ago
My grandmother was born in 1912 and therefore lived through:

- World War 1

- The Spanish Flu (she caught it and survived despite being only 6)

- A rural Pennsylvania childhood with no antibiotics and where multiple family members were injured by livestock or heavy equipment

- Prohibition

- The Great Depression

- World War 2

I often wonder if this gave that generation a VERY different attitude towards risk. e.g. one of your kids having a broken arm may not seem that big a deal when you might know a family that lost multiple sons in WW2? Or a bad cut compared to someone you know losing a leg in a tractor accident?

e40•3d ago
That generation experienced natural selection. It definitely weeded out the weak.

My grandparents were born in 1890-1900. What they suffered through I’m sure would kill most people. Definitely would me. Most of them lived to their late 80s and 90s.

nullc•3d ago
Everyone dies, everyone suffers injuries, everyone gets sick, it's the price of ever having had the opportunity to exist in the first place.

We've made everything so regulated, costly, and supervised that it meaningfully contributes to the lowest fertility rate in the nation's history. Many of the children who are fortunate enough to get a chance to exist at all spend their lives hypnotized forever scrolling and will likely suffer a shortened and less worthwhile life due obesity, inactivity, isolation, and depression.

Having a chance to live, either in the metaphorical sense or in a literal sense trumps eliminating the last epsilon of risk that can only be eliminated by living in bubble wrap or not living at all.

Your admonishment of there being a middle ground is fair in one sense, but too often humans are bimodal against risk: we either ignore it completely or obsess over it. If a middle ground can be reached, great, but if it can't ignoring small risks is often superior to the alternative of over emphasizing them.

It's also important for to have risky activities that LOOK risky. No one under those bikes was under an impression that it was safe. I'd rather children climb on some lump of rickety boards they hammered together themselves-- it's clearly dangerous to everyone-- than run face first into some gleaming concrete and steel playground equipment which looks safe but becomes just as dangerous if you are reckless enough.

What's safer? Bike jumps over kids or a snapchat filter that makes things look faster the faster the gps reports you going?

... and some amount of the risky stuff is needed just to keep the overton window open for the sensible middle. There are places in the US where children of the ages in the picture merely playing outside (no bikes!) will result in state child protective intervention. If a few kids getting scraped up or broken bones-- or heaven forbid, even dying!-- is the cost of having perspective, it's well worth it.

fuzzfactor•3d ago
IIRC, K-Mart sold a lot of bikes, but not helmets.

It had never yet crossed the minds of adults, helmets certainly were not a mainstream product when it comes to protecting kids.

Parents loved their kids just as much as ever back then and you could feel the full force of their protective nature, even if it doesn't always appear historically so.

Whether hardened by war or anything else, what really started the helmet "craze", whether it's kids wearing them or not, and regardless of increases in dangerous road traffic, helmets really started to fly off the shelf like never before, once the greatest threat of all started escalating risk through the roof.

And it was adults who needed to protect themselves like never before.

From lawsuits.

eadmund•2d ago
I still believe that bicycle helmets are a net negative for cycling safety, due to a combination of them not improving crash survivability as much as folks believe while at the same time increasing the number of crashes due to rider and driver behaviour. But who can argue against the perception of the masses?

I think it wasn’t lawsuits, but good ol’ American advertising: helmet manufacturers created a need in the minds of consumers where there had not been one before (cf. deodorant, cigarettes and plenty more).

skylurk•2d ago
Seth's got some thoughts on this

https://www.youtube.com/watch?v=ZKbYaOiz5U4

https://www.youtube.com/watch?v=1JfbTwrtOWU

burnt-resistor•3d ago
I had an all chrome and black pads Diamondback bike with black mags, and the scar tissue on my knees and elbows to prove it.

The road I always wanted to fly down was Harwood Rd (SW end on the Los Gatos side) ever since 1982-3 when I saw Woz's house under construction but didn't realize who that was. Harwood's steepness was an obsessive objective for maximizing bicycle and skateboard speed when I was 5-6 and the local roads and sidewalks in front of my house were somewhat uneven. This was an era when many San Jose and Los Gatos residential streets were smooth blacktop and not yet besmirched with a very rough, gray aggregate bonded topcoat hostile to bicycles and especially skateboards.

(Later, I had a steel frame Miyata that was perpetually too small for me extended by ever-increasing handlebar and seat extension risers. (It was eventually stolen in Davis CA the only time I forgot to lock it. Its wheels had slime tubes and Kevlar linings to defeat California's omnipresent goatheads.))

When I grew older, I would fly down Bernal Rd (down from IBM) on the Miyata and Hicks Rd (on the back side before Alamitos Rd) with my best friend. Hicks Rd has/had a grade so ridiculously steep and pavement so uneven, I had to sit on my bike rack to avoid tumbling over the handlebars. In adult life, I found out he became a Christian metal/rock performer and had an insanely hot SO... that's cool and to each, their own.

In recent years in the midst of my mid-life (crisis?) I found that Kaabo King GT Pro goes 60 mph (96 kmh) while standing. I had to have that. It turned out to be (almost) true (57 mph (92 kmh) on a slight downhill, but I'm probably double the weight it was designed to carry). And it did fly around Austin downtown and surrounding areas 2020-2024.

If I was near the Bonneville Salt Flats as a kit, I would've probably been obsessed with building rocket-powered wagons and bikes. Sadly, all we kids had was gravity and the potential energy of short hills and later, some small mountains. I'm guess that was a blessing because there are sensible risk appetites. There's a bathtub of reasonableness between completely risk-adverse and (un)knowingly Darwin award. The former is result of helicopter parents who turned kids' parks into boring, perfectly-safe, plastic "paradises" no one goes to when there were uneven, redwood telephone pones to jump on, a semi-enclosed vertical steel maze about 15' tall with 3' horizontal sections to crawl up, and a real retired Korean Era jet in a sandbox. None of that cool stuff remains.

These days, my current neighbor won't even let their almost adult son use an electric hedge trimmer because "ooh, too dangerous!" but they gave him an offroad 125cc motorcycle (I would've died for one of those)... which doesn't make any sense at all.

MontgomeryPy•2d ago
It all started with Evel K. in the 70s I think. We'd see him on Wide World of Sports, get his cycle jumping toy as presents, etc. Everyone started building wooden ramps to emulate Evel. It was actually a lot of fun so long as you didn't add too much speed or ramp height.