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Show HN: I spent 6 years building a ridiculous wooden pixel display

https://benholmen.com/blog/kilopixel/
723•benholmen•9h ago•111 comments

Show HN: I've been building an ERP for manufacturing for the last 3 years

https://github.com/crbnos/carbon
92•barbinbrad•3h ago•28 comments

Qwen-Image: Crafting with native text rendering

https://qwenlm.github.io/blog/qwen-image/
301•meetpateltech•10h ago•85 comments

How we made JSON.stringify more than twice as fast

https://v8.dev/blog/json-stringify
195•emschwartz•12h ago•50 comments

EconTeen – Financial literacy lessons and tools for teens

https://econteen.com/
40•Chrisjackson4•2h ago•28 comments

Thingino: Open-Source Firmware for IP Cameras

https://thingino.com/
45•zakki•3h ago•9 comments

NASA's Curiosity picks up new skills

https://www.jpl.nasa.gov/news/marking-13-years-on-mars-nasas-curiosity-picks-up-new-skills/
95•Bluestein•6h ago•30 comments

I tried to replace myself with ChatGPT in my English class

https://lithub.com/what-happened-when-i-tried-to-replace-myself-with-chatgpt-in-my-english-classroom/
84•lapcat•2d ago•87 comments

Job-seekers are dodging AI interviewers

https://fortune.com/2025/08/03/ai-interviewers-job-seekers-unemployment-hiring-hr-teams/
521•robtherobber•18h ago•770 comments

Content-Aware Spaced Repetition

https://www.giacomoran.com/blog/content-aware-sr/
89•ran3000•6h ago•18 comments

Indian Sign Painting: A typeface designer's take on the craft

https://bl.ag/indian-sign-painting-a-typeface-designers-take-on-the-craft/
123•detaro•2d ago•19 comments

Ask HN: What trick of the trade took you too long to learn?

60•unsupp0rted•8h ago•82 comments

OpenIPC: Open IP Camera Firmware

https://openipc.org/à
202•zakki•3d ago•115 comments

DrawAFish.com Postmortem

https://aldenhallak.com/blog/posts/draw-a-fish-postmortem.html
258•hallak•13h ago•62 comments

How we built Bluey’s world

https://www.itsnicethat.com/features/how-we-built-bluey-s-world-cartoon-background-scenery-art-director-catriona-drummond-animation-090725
324•skrebbel•3d ago•152 comments

Passkeys are just passwords that require a password manager

https://danfabulich.medium.com/passkeys-are-just-passwords-that-require-a-password-manager-ebb7f2fdcadf
47•dfabulich•6h ago•18 comments

Deterministic Simulation Testing in Rust: A Theater of State Machines

https://www.polarsignals.com/blog/posts/2025/07/08/dst-rust
14•lukastyrychtr•3d ago•1 comments

Hiroshima (1946)

https://www.newyorker.com/magazine/1946/08/31/hiroshima
39•pseudolus•2d ago•47 comments

Once a death sentence, cardiac amyloidosis is finally treatable

https://www.nytimes.com/2025/08/04/well/cardiac-amyloidosis.html
106•elektor•5h ago•7 comments

Perplexity is using stealth, undeclared crawlers to evade no-crawl directives

https://blog.cloudflare.com/perplexity-is-using-stealth-undeclared-crawlers-to-evade-website-no-crawl-directives/
960•rrampage•12h ago•542 comments

The history of the Schwartzian Transform (2016)

https://www.perl.com/article/the-history-of-the-schwartzian-transform/
3•mooreds•3d ago•0 comments

Customizing tmux

https://evgeniipendragon.com/posts/customizing-tmux-and-making-it-less-dreadful/
94•EPendragon•10h ago•82 comments

What Can a Cell Remember?

https://www.quantamagazine.org/what-can-a-cell-remember-20250730/
51•chapulin•4d ago•5 comments

Projects evaluated to see if they're as free and open source as advertised

https://isitreallyfoss.com/
127•exiguus•4h ago•43 comments

My Ideal Array Language

https://www.ashermancinelli.com/csblog/2025-7-20-Ideal-Array-Language.html
116•bobajeff•13h ago•50 comments

Objects should shut up

https://dustri.org/b/objects-should-shut-the-fuck-up.html
301•gm678•11h ago•225 comments

Century-old stone “tsunami stones” dot Japan's coastline (2015)

https://www.smithsonianmag.com/smart-news/century-old-warnings-against-tsunamis-dot-japans-coastline-180956448/
130•deegles•13h ago•49 comments

Show HN: Mathpad – Physical keypad for typing math symbols

https://www.crowdsupply.com/summa-cogni/mathpad
62•MagneLauritzen•2d ago•23 comments

Is the interstellar object 3I/ATLAS alien technology? [pdf]

https://lweb.cfa.harvard.edu/~loeb/HCL25.pdf
81•jackbravo•13h ago•114 comments

Show HN: Sidequest.js – Background jobs for Node.js using your database

https://docs.sidequestjs.com/quick-start
51•merencia•10h ago•12 comments
Open in hackernews

Hiroshima (1946)

https://www.newyorker.com/magazine/1946/08/31/hiroshima
39•pseudolus•2d ago

Comments

pseudolus•2d ago
https://archive.ph/N672J
_rm•2d ago
Interesting to see the difference in writing style back then. Lots of long sentences. Kind of the opposite to the LinkedIn-style writing we see today, spitting out as many sentences and paragraphs as possible. Like you can see the generations' attention spans in their form of writing.
mixmastamyk•4h ago
Been watching some old movies lately and its amazing to watch simple scenes stretch on for five minutes or more. Its almost like there was nothing else to do.
avhception•3h ago
At first I'm irritated by this, but once I adapt I actually like the time it gives me as a viewer to appreciate the subtleties of what's the characters and what they're up to.
mixmastamyk•3h ago
Agreed, though I feel they went overboard during the seventies. On the other hand, modern movies make me desperate for a breather.
makeitdouble•1h ago
> Its almost like there was nothing else to do.

Until now I forgot that people saw theaters as social venues, would eat buckets of popcorn, go the toilet etc.

From that lens, viewers fully focused and digesting every second of the movie was definitely not the average target.

asdff•2h ago
A whole generation reared on cigarettes and black coffee with no tech addiction. Yeah, these were pretty focused times.
makeitdouble•1h ago
Long sentences are fine if your value form over communication.

Marking it on attention span makes it sound like convoluted and rambling sentences were universally good in the first place. I'd argue the contrary for a magazine or news outlet.

defrost•2d ago

  A surprising number of the people of Hiroshima remained more or less indifferent about the ethics of using the bomb. 
Unsurprising for the time given the context.

While people far from Japan made much of the uniqueness and power of a single bomb destroying a single city for those on the ground it was just another single city destroyed overnight by bombing .. the 73rd such city destroyed in a relatively short duration of time.

The destruction and death in Hiroshima was on par with the destruction and death in Tokyo when that was firebombed.

eschulz•3h ago
This piece made a big impact on me when I read it like five years ago, and if I recall correctly there was a young doctor there who was one of the few interviewed who stated that the bomb's use was possibly a war crime. He did like 48 hours in the hospital as thousands upon thousands of burned and dying walked from afar to the completely overrun clinic.
throw0101d•30m ago
> […] and if I recall correctly there was a young doctor there who was one of the few interviewed who stated that the bomb's use was possibly a war crime.

Was the dropping of the bombs any worse than the fire bombings that had been taking places for months? LeMay didn't seem to think so.

slibhb•3h ago
There was no nuclear taboo in 1945. Looking back, people forget that.
prmph•3h ago
Yes, I understand that Japan gave up, not so much because of the bomb, but mostly because of the Soviet invasion and capture of Manchuria (and the implied threat of an invasion of the mainland), after the war in Europe had been won.

But I still struggle to understand the Japanese mentality. Were they OK with the prospect of city after city being atom- or fire-bombed, so long as no ground invasion occurred?

makeitdouble•2h ago
The war was dictated by a religious leader, to some (most?) there was just no stopping it until it tells them to.
InTheArena•1h ago
Which religious leader? Hirohito? Hirohito rarely took any direction of the war - at best he enthusiastically endorsed what the ruling militarists wanted. As critical as one could (and should) be about this support, there is plenty of documentation that he tried to tap the brakes on the militarists, but didn't try all that hard. It wasn't until the very end of the war that he directly made a decision, and that was only enabled by a literal tie in the cabinet that allowed him to cast the deciding vote (sorta - more or less, gave him cover to break his role).

He was a war criminal, but not the leader of the war by any means. That was reserved for the militarists - Tojo and Suzuki and others.

makeitdouble•1h ago
> he enthusiastically endorsed what the ruling militarists wanted.

That's definitely enough when you are a living god. From the point he gave his approval, he was the only one that could fully stop it.

You're right that he was a puppet for the military, exactly because of that god position he was born into.

decimalenough•1h ago
It's not useful to paint Hirohito as a religious leader. Yes, he was technically the head of State Shinto, but he was not the one issuing orders.

Depending on how you look at it (and reams of paper have been expended on this topic), he was somewhere between a puppet and a symbol. Certainly not innocent, but also not the instigator.

InTheArena•2h ago
This is mostly untrue. Most of this narrative comes from Soviet propaganda that was later propagated by anti-Western and anti-war groups in the United States. More recently, it's gotten more attention as Vladimir Putin and Vladimir Rudolfovich Solovyov use it as a useful tool to build their narrative that only Russia was responsible for World War II's victory and to justify their constant threats of nuclear warfare.

The historical record is very clear, as is Hirohito's own statement at the time:

"Furthermore, the enemy has begun to employ a new and cruel bomb, causing immense and indiscriminate destruction, the extent of which is beyond all estimation. Should we continue to fight, not only would it result in the ultimate collapse and obliteration of the Japanese nation, but it would also lead to the total extinction of human civilization.

How, then, are We to protect the millions of Our subjects and atone before the spirits of my Imperial ancestors?

This is why We have ordered the Empire to accept the terms of the Joint Declaration. "

prmph•1h ago
What came before the "Furthermore, ..."?
WillPostForFood•1h ago
But now the war has lasted for nearly four years. Despite the best that has been done by everyone — the gallant fighting of the military and naval forces, the diligence and assiduity of our servants of the state, and the devoted service of our one hundred million people — the war situation has developed not necessarily to Japan’s advantage, while the general trends of the world have all turned against her interest.
pirate787•1h ago
That may be the greatest understatement ever written!
prmph•1h ago
Beat me to it. That's exactly what I was going to say
georgeecollins•1h ago
The other thing that gets glossed over in the "it was the soviets, not the bomb that caused the surrender" is that the USSR knew the US had the atomic bomb and realized it might end the war. They had territorial objectives of their own and wanted to join the conflict with (understandably) minimal casualties. If they had thought the war was going to last another year they might waited a bit longer to join.

I really strongly recommend Ian Toll's histories of the Pacific war, because there is information that is not in the early histories (at least the ones I read a while back) that is because things in the US and former USSR are more declassified. In particular, the US had a pretty good understanding of what is going on in the Japanese government. They knew a lot of civilian leaders wanted to surrender before Hiroshima, but were afraid they would be associated by a coup, as had happened in the 1930s. That's also what the Japanese leaders who wanted to surrender were worried about as well.

InTheArena•1h ago
Additionally, the Japanese leadership was welcoming a land invasion. They believed that a land invasion would result in unacceptable casualties, forcing the United States into a peace that would allow Japan to continue occupying China and many of the sized territories. That's how disconnected from reality the leadership was.

The sad thing is that there is a non-zero chance they where right. There was considerable concern about that from the war leadership at this point. The allies _dramatically_ underestimated the forces that the Japanese had marshalled at the two invasion sites, and it would have been not very good. The alternative that the Navy was pushing was a starvation blockade of Japan. This probably would have been succesful but led to millions more lives lost in Japan, and a almost inevitable civil war in Japan.

throw0101d•35m ago
> The allies _dramatically_ underestimated the forces that the Japanese had marshalled at the two invasion sites, and it would have been not very good.

They did not underestimate the Japanese forces.

They did an assessment in early 1945 and did calculations and the needed invasion force. But the Japanese could read a map just as well as the Americans, and could guess where Olympic would happen and redeployed, which the Americans detected:

* https://en.wikipedia.org/wiki/Operation_Downfall#Ground_thre...

defrost•18m ago
The question I addressed was about the specific ethics of the specific case of "using the (atomic) bomb".

For survivors of a city destroyed overnight, with a great many friends and relatives dead, others injured or suffering the follow on results of malnutrition, disease, etc. there's little to separate the ethics of the use of an atomic weapon from the ethics of the use of tonnes of HE and incendiary weapons.

The most famous comparison, Tokyo Vs Hiroshima, has little to distinguish them from the PoV of a survivor.

https://blog.nuclearsecrecy.com/2014/09/22/tokyo-hiroshima/

Again, for context, 72 Japanese cities, including Tokyo, were each leveled in single bombing raids before Hiroshima.

The question should be less about the ethics of spending an ungodly amount of money to destroy a city with a single bomb, and more about the ethics of destroying a single city for considerably less cost multiple times over.

I very much suspect a great many regular people in Japan were very much not okay with seeing their fellow citizens destroyed in a war being pursued by other elements of Japanese society.

Synaesthesia•3h ago
The singular horror of this event really is so difficult to describe, definitely one of the low points of human history which we must vow to never again repeat, under any circumstances.
OgsyedIE•3h ago
I totally disagree about the difficulty of describing horror, since the linked article is one of many to have received critical acclaim for providing quality descriptions of WW2 experiences (my recommendation is 1952's The Naked Island).

Agree about the necessity of the never again stuff though, even though we've been failing at that continuously.

jwilber•3h ago
Well, op may be making the point that even the best description of horror is little compared to experiencing it. Watching a video of the horror itself (e.g. combat footage, a beheading, open-heart surgery) pales in comparison to experiencing it firsthand.
prmph•2h ago
Man, the whole war was horrific.

The Japanese did things that were arguably even more horrific than the bomb; read up on unit 731 and the rape of Nanjing. I'm sure those who experienced those things would have far preferred dying in a flash.

The German did the holocaust, Babi Yar, etc.

The Allies did various fire-bombings.

The current singular taboo around nuclear weapons kind of misses how destructive and horrific the whole war was. This was total war on a scale that is hard to imagine today. To be fair modern nuclear weapons pack a punch that far exceed those atoms bombs.

ricksunny•2h ago
Any global consensus on avoiding repeating this low point in human history needs to acknowledge the prime movers behind birthing the bomb into existence in the first place. Much ink has been spilt debating morality, but on the raw mechanics the historians are in alignment with each other - doesn't matter if you ask Richard Rhodes, Robert S Norris, or Alex Wellerstein:

  Vannevar Bush, more than any single individual, scientist or non-scientist, stands at the center of the bureaucratic decision to feasibility-test the fission chain reaction.
https://www.jstor.org/stable/233904

(compsci & s/w engineers can love VB all they want for As We May Think, but the man had some serious and arguably unnecessary blood in the short term, and decades of existential fear in the long term, on his hands. The silence of his legacy has been far too effective at ducking popular criticism of his role in history)

If humanity ever chooses to avoid creating yet-to-be-developed doomsday devices in humanity's future, while _still_ harvesting benefits of new R&D (viz. nuclear power plant energy), it needs to 'debug' the social epistemology around the Advisory Committee on Uranium / Uranium Committee (leading to S-1 under the NDRC).

edit: added 'in the short term, and decades of existential fear in the long term'

InTheArena•1h ago
In any moral framework that does not include perfect knowledge of the future, the nuclear bomb is morally defensible at worst, and morally required at best. Sheer number of lives saved? The Nuclear Bomb ended the war. Number of Japanese lives saved? Nuclear bomb wins. The "non-violent" option of a blockade? It would have resulted in millions dead. The Japanese farming system completely collapsed in 1944. Many still starved even after the surrender, as the allies rushed to get food and aid to Japan.

What about a pure Soviet entry into the war? You have to look at what happened to Poland and Eastern Europe when the Soviet army invaded. Once again, by any metric, this was the best possible outcome at the time.

But it was unquestionably a local maximum - the best solution at the time, with horrific consequences afterward.

ricksunny•1h ago
That's the pitfall these discussions invariably fall into - debating the morality of deploying rather than the wisdom of developing a capacity in the first place. The primary justification for secretly studying the feasibility of the fission chain reaction was the fear that Germany (not Japan) might be developing an atomic bomb of their own (an early form of the subsequent Cold War's 'can't prove a negative' about what weapons the Soviets might be developing).
baud147258•1h ago
> unnecessary blood on his hands

While the debate on the bomb is not and never will be settled, I'm not sure I'd call the bloodshed caused by Hiroshima and Nagasaki to be unnecessary: it ended up a war that had caused so far millions of death.

And what social epistemology, actually?

ricksunny•25m ago
>I'm not sure I'd call ...

Indeed it would have been better for me to focus on the decades of existential fear rather than the immediate bloodshed because, as demonstrated, the debate descended straight to the usual about the morality of dropping the bomb in WWII.

>And what social epistemology, actually?

Karl Compton and Leo Szilard whispering in Vannevar Bush's ear about the threat that the prospective threat that a German atomic bomb would pose. Vannevar made the case that the physicists would do these feasibility tests anyways with or without his support, but this is a (somewhat biased) counterfactual and therefore incapable of being evaluated.

The whole episode demonstrates that it is by responding affirmatively to the 'choice to learn' - in this case whether a unique embodiment of already known physical properties is _really_ feasible - which finds us crossing the technological Rubicon of runaway doomsday device development.

Vannevar would go on to defend his actions in saying that it was good that such a horrific capacity was demonstrated in such a 'spectacular' way. His words in his autobiography, "Pieces of the Action" strive to cement the legacy of his gift to the world:

  "The advent of the A-bomb is generally regarded as a catastrophe for civilization. I am not convinced that it was.  With the pace of science in this present century it was inevitable that means of mass destruction should appear.  Since the concept of one world under law is far in the future, it was also inevitable that great states should face one another thus armed. If there were no A-bombs the confrontation would still have occurred, and the means might well have been to spread among a a people a disease for a chemical that would kill or render impotent the whole population.  History may well conclude, if history is written a century from now, that it was well that the inevitable confrontation came in a spectacular way that all could recognize, rather than in a subtle form which might tempt aggression through ignorance.  At least we all know, we and the rest of the world, that there are A-bombs and what they can do."
prmph•51m ago
The bomb would have been developed one way or the other, no matter what. The time was ripe for it.
socalgal2•42m ago
Why is this special? The Japanese killed ~7 million Chinese, 0.5 to 1 million Filipinos, 500k in Korea, you can keep adding them up. Then Japan loses 0.2% of all their atrocities and it's the worst thing ever? No, it's not the worst thing ever, not even close. Sure, we'd all like it to never happen again. But if I had to pick one thing not happening again I'd pick saving all others that died in WW2 over this one incident.

https://www.youtube.com/watch?v=DwKPFT-RioU

There's also the argument that it saved more lives than the deaths it caused. The same can not be said for Japan's atrocities.

throw0101d•32m ago
> The singular horror of this event really is so difficult to describe, definitely one of the low points of human history which we must vow to never again repeat, under any circumstances.

Lower than the Holodomor? Lower than Dresden or Tokyo fire bombings? Lower than the Holocaust? Lower than Unit 731?

zzzbra•3h ago
I just bought this paperback.
jmclnx•3h ago
Verg good read

Linked there is also a related article from 1985

https://www.newyorker.com/magazine/1985/07/15/hiroshima-the-...

cypherpunks01•2h ago
"The work was originally published in The New Yorker, which had planned to run it over four issues but instead dedicated the entire edition of August 31, 1946, to a single article"

TO OUR READER: The New Yorker this week devotes its entire editorial space to an article on the almost complete obliteration of a city by one atomic bomb, and what happened to the people of that city. It does so in the conviction that few of us have yet comprehended the all but incredible destructive power of this weapon, and that everyone might well take time to consider the terrible implications of its use.

The Editors

https://en.wikipedia.org/wiki/Hiroshima_(book)

karlgkk•1h ago
The atrocities that the Japanese military committed, consistently and repeatedly and combined with their attack on pearl harbor, meant that Americans of the time on the front lines had few qualms or issues with dropping the bomb.

Truman famously called Oppenheimer a "cry baby" when Oppenheimer expressed doubt. Truman had spent the past decade dealing with the war in his capacity as senator and vice president - seeing the effects it was having first (or second) hand.

Now, this isn't to say that America was right or not right to drop one or both bombs. It may "feel" like I'm saying "the Japanese deserved it for their behavior" - that's not a belief I hold, either.

I just want to provide color for why American leadership seemed so relatively unconcerned with the lives of Japanese civilians in 1945.

vjvjvjvjghv•45m ago
I agree. With the information they had at the time it made total sense to drop the bomb. After seeing how tough the Japanese military fought during the invasion of the various islands it was reasonable to assume that the invasion of the mainland would be extremely bloody.

I think whatever we learned (I have read that Japan was already ready to surrender). after should be applied to future wars but not be applied to situations where the information was not available.

If anybody is responsible for Japanese suffering it’s clearly Hirohito and his generals who were too cowardly to accept defeat and instead chose to have killed hundreds of thousands of Japanese while they were hesitating.

throw0101d•38m ago
> I just want to provide color for why American leadership seemed so relatively unconcerned with the lives of Japanese civilians in 1945.

They were concerned about Japanese lives. They were more concerned about American lives, but they concluded the shorter the war was the more lives of everyone involved could be saved.

The Japanese food situation was also very dire: there was a very real risk of famine during Winter 1945-46, and so if the war could be ended before that many millions of Japanese civilians could be saved.

alexjplant•36m ago
> Now, this isn't to say that America was right or not right to drop one or both bombs. It may "feel" like I'm saying "the Japanese deserved it for their behavior" - that's not a belief I hold, either.

Some contemporaries of note didn't think it was justified either [1]. Eisenhower, a decorated war hero who later cautioned against the over-expansion of the military industrial complex in his Presidential farewell speech, said of the bombing in his memoir:

> I was one of those who felt that there were a number of cogent reasons to question the wisdom of such an act. [...] I had been conscious of a feeling of depression and so I voiced [...] my grave misgivings, first on the basis of my belief that Japan was already defeated and that dropping the bomb was completely unnecessary, and secondly, because I thought that our country should avoid shocking world opinion by the use of a weapon whose employment was, I thought, no longer mandatory as a measure to save American lives

I vacationed in Japan a few months ago via a tour group and we went to Hiroshima. It was one of the most emotionally-taxing experiences of my life. The bomb was literally dropped on a hospital [2]. The heat of the explosion melted the tops of headstones in a nearby graveyard and seared some poor soul's shadow into the nearby steps that they were sitting on. Hundreds of thousands of civilians' lives were erased or permanently altered in a matter of seconds. Grabbing a sandwich from the 7-11 next door and eating it while I stared at where it all happened 80 years prior definitely fucked with me a bit.

I've never experienced war or lost somebody I care about to an enemy combatant. All things considered I've led a rather easy life. I can't say how I'd feel otherwise, but the me that exists right now thinks that our military shouldn't have done what it did. That they haven't done it again makes me wonder whether they realize this too.

[1] https://en.wikipedia.org/wiki/Debate_over_the_atomic_bombing...

[2] https://en.wikipedia.org/wiki/Shima_Hospital

throw0101d•40m ago
If anyone thinks that dropping the bombs was unnecessary, I would recommend reading Barrett's 140 Days to Hiroshima: The Story of Japan's Last Chance to Avert Armageddon:

* https://www.goodreads.com/book/show/51089656-140-days-to-hir...

* https://www.nationalww2museum.org/about-us/notes-museum/140-...

It documents, using Japanese source material including interviews with the principals involved, the decision making process leading up to the eventual surrender.

What was most surprising to me was the reluctance of many members to surrender even after two bombs were dropped. The Emperor himself had to be called in multiple times (which was unprecedented) to ensure that the surrender was 'pushed' through. Even after the vote to surrender happened there were still machinations to overturn it: a reminder that there was a coup attempt to prevent the surrender from being broadcast:

* https://en.wikipedia.org/wiki/Kyūjō_incident