The Legend of von Neumann (1973) [pdf] (gwern.net)
breput 7 hours ago
srejk 8 hours ago
snapetom 8 hours ago
harpersealtako 7 hours ago
lalalandland 7 hours ago
hnfong 6 hours ago
Otherwise why not just replace them with a script (or these days, an AI)
qlte 6 hours ago
alwa 3 hours ago
amunozo 5 hours ago
IAmBroom 3 hours ago
It's like an analog to the fact that almost all people consider themselves funny.
ahazred8ta an hour ago
chucksmash 7 hours ago
If somebody truly believes they have a useful model then they don't discouraged by academic gatekeeping, they go and build Time Cube.
cycomanic 6 hours ago
The problem is that instead most people to come to them are either obvious crackpots, who think they have solved cancer (energy...) and contact the person because they are a biologist, physicist ... (on a completely unrelated topic usually). Or they come from a place of arrogance, i.e. "we do ... like this, our method is clearly superior you should adopt it", or even worse here buy our clearly superior method.
harpersealtako 5 hours ago
bmitc 6 hours ago
However, the gatekeeping you mention definitely occurs to mere mortals who might have an interesting bend on existing ideas.
KylerAce 4 hours ago
jltsiren 4 hours ago
"Using methodology from a field known for its focus on methodology in another field" was still a novel idea in von Neumann's time. But because von Neumann and others did it, and because millions of people entered science after them, most combinations like that have already been tried. Breakthroughs from combining ideas from unrelated fields require something little less obvious these days.
helterskelter2 6 hours ago
JoeAltmaier 8 hours ago
Trouble with that startup was, the medical folks with money don't use computer tools. And the students in training have no money.
flipping_beacon 8 hours ago
sixtyj 6 hours ago
JoeAltmaier 3 hours ago
JoeAltmaier an hour ago
baruz 6 hours ago
mmulqueen 5 hours ago
jablongo 4 hours ago
Animats 4 hours ago
donquichotte 3 hours ago
https://improbable.com/wp-content/uploads/2011/10/ThereAreNo...
api 5 hours ago
IAmBroom 3 hours ago
Yes, they were identical.
My crib note that I took into the later final exam was simply a conversion between terms in the two departments. Nothing else; I'd already crammed and aced the first exam.
delichon 8 hours ago
cma 8 hours ago
ricksunny 7 hours ago
DonHopkins 5 hours ago
https://github.com/SimHacker/moollm/blob/main/designs/eval/C...
The Holy Trinity:
Father: Alonzo Church: L3 - lambda calculus, the name the institution bears
Son: Alonzo (Snap! mascot) - Incarnation — Gobo, λ on his head
Holy Ghost: λ - First-class procedures; β-reduction; eval-as-spirit
Membership — Eternal Judgment ($35):
https://github.com/SimHacker/moollm/blob/main/designs/eval/C...
John von Neumann tried to hire Church's own student, Turing, who declined. The Father begat the Machine; Johnny wanted to be its landlord.
Ecumenical Outreach: All fans of other gods are welcome. Bring your Vannevar, your Shannon, your Wiener, your Johnny. In the Church of the Eval Genius every god is a procedure, and every procedure may be passed as an argument.
nkozyra 7 hours ago
tomrod 6 hours ago
Einstein built on the shoulders of Riemann, Gauss, and others when considering the universe might be non-Euclidean!
All brilliant people, many singular minds of great repute, yet, all improved by the rest.
anthonypasq 6 hours ago
sillysaurusx 5 hours ago
It's interesting how much worse off the world would be if the smartest people were in charge of it.
What ultimately blocked his nuke proposals? (Why didn't anyone listen?) I'm curious about whatever failsafe that was.
estearum 5 hours ago
2. Probably what blocked his proposals is that most people are loath to murder millions of other people (especially if they have ~any other option, including "do nothing")
myth_drannon 4 hours ago
hn_acc1 4 hours ago
IAmBroom 3 hours ago
As an extreme example, antisemitism was so commonly palatable that an open admirer of Hitler, Charles Lindbergh, was a very serious candidate for the presidency.
Today, open antisemitism can get one's career derailed in much of the world. Would that be true without the eye-opening shock that the news of the concentration camps produced?
IN NOW WAY was the Holocaust forgivable, but we simply cannot say if the world today would be "more moral on average" or "less moral on average". Maybe Jews would feel and be far less safe today in predominantly Christian countries. Maybe not.
All we can say for certain is that the horrors enacted upon the Holocaust victims were evil. As we can surely say that murdering many millions of people living in the USSR would be.
senderista 4 hours ago
dempedempe 5 hours ago
He wrote the original book on game theory! The Theory of Games and Economic Behavior with Oskar Morgenstern.
Relatedly, MAD was his conception as well.
mrandish an hour ago
I always found it endearing that von Neumann loved playing poker with friends but was admittedly terrible at it, regularly losing money.
senderista 4 hours ago
gradus_ad 3 hours ago
curt15 3 hours ago
SimplyUnknown 9 hours ago
laserson 9 hours ago
stevenwoo 8 hours ago
offbeatport 7 hours ago
zoltano 7 hours ago
phba 6 hours ago
somethinsfishy 3 hours ago
chasd00 8 hours ago
https://en.wikipedia.org/wiki/The_Martians_(scientists)
"The Martians" (Hungarian: "A marslakók") were a group of prominent scientists (mostly, but not exclusively, physicists and mathematicians) of Hungarian Jewish descent who emigrated from Europe to the United States in the early half of the 20th century.[1]
Leo Szilard jokingly suggested that Hungary was a front for aliens from Mars."
rationalist 8 hours ago
sillysaurusx 5 hours ago
dang 6 hours ago
The legend of John von Neumann (1973) - https://news.ycombinator.com/item?id=8212335 - Aug 2014 (65 comments)
The Legend of John von Neumann - https://news.ycombinator.com/item?id=1427906 - June 2010 (4 comments)
(Reposts are fine after a year or so; links to past threads are just to satisfy extra-curious readers)
lern_too_spel 6 hours ago
John von Neumann Shot Lightning from His Arse (2025) - https://news.ycombinator.com/item?id=45930838 (5 comments)
I know of several von Neumann like stories that people tell about me about things like instant memorization, fast calculation, and instant problem solving. There is almost always a trick that I didn't reveal to the person experiencing the miracle for the same reason a magician doesn't reveal their tricks: it's more fun for the person to figure it out on their own.
lwarfield 7 hours ago
He's also the inspiration for one of favorite characters in fiction, Sherkaner Underhill from A Deepness In The Sky*. :)
EvanAnderson 6 hours ago
Oh, hell-- that totally makes sense and I completely missed it until now. Thanks for mentioning that-- it adds some additional depth to a book and a character I already enjoy a ton.
bmitc 6 hours ago
abecedarius 4 hours ago
mwigdahl 4 hours ago
alkyon 8 hours ago
dealmeidaleon 8 hours ago
joenot443 7 hours ago
For those who've read other books on von Neumann, do you think The MANIAC is a reasonable summary?
helterskelter2 6 hours ago
MattGrommes 3 hours ago
lhd1 an hour ago
nickdothutton 5 hours ago
SV_BubbleTime 36 minutes ago
They’re hard at work increasing Meta ad clicks by 1% over the next three years.
sourdecor 8 hours ago
ricksunny 7 hours ago
dandersch 7 hours ago
ricksunny 6 hours ago
That's a worthwhile observation. The 1973 article anyway doesn't go into depth about comparative computer architecture. It's also possible the term's currency in computer science circles hadn't yet crossed into Halmos' mathematics circles, but I wouldn't know.
adrian_b 6 hours ago
Herman Goldstine, who distributed the document and John von Neumann, who wrote it, are the reason for the explosive growth of the computer industry during the following decades.
The paper written by von Neumann was an exemplary model of clarity and good logical thinking. Nothing ever written by Eckert or Mauchly was at a comparable level.
Everyone who read that paper understood immediately how to design and build an electronic automatic computer, and a great number of teams in many countries all over the world did precisely this, so a decade later there already existed experimental electronic computers in many countries and also commercial electronic computers in the UK and in USA.
Some of the details from the paper must have been learned by von Neumann from discussions with the ENIAC team, but others were obviously von Neumann's own ideas, e.g. the use for the main memory of an iconoscope tube with fast random access, i.e. a DRAM like today, instead of the slow serial delay lines chosen by Eckert and Mauchly for their following computers.
Whatever von Neumann has learned from the ENIAC team, he obviously understood better than the people who taught him, allowing him to formulate general principles for the organization of an automatic computer.
The publication of the von Neumann paper allowed the concurrent development of many computers in many places, and each of those projects found various improvements that were essential in making the electronic computers successful commercial products.
If Eckert and Mauchly had succeeded to block any competitors, then the evolution of computers might have been delayed by up to 2 decades, until any patents would have expired, because Eckert and Mauchly have never done later any significant innovations and they would have never succeeded to develop better computers at the pace that happened due to the von Neumann paper.
Moreover, Eckert and Mauchly had a history themselves of failing to mention their sources of inspiration, so they were not the people entitled to complain about someone "stealing" ideas from them.
Before ENIAC, the first electronic computer in USA was the Atanasoff-Berry computer. That computer was a special-purpose computer, designed for solving systems of linear algebraic equations. However, ENIAC was a special-purpose computer too, unlike the relay-based computers that were older than it, like the Harvard Mark I computer, as even its name implies (Numerical Integrator and Computer).
ENIAC was conceived as a replacement for the older mechanical "differential analyzers", which were used to solve ordinary differential equations, e.g. for computing artillery tables, so its architecture mimicked the architecture of the mechanical differential analyzers, and it was reconfigured for new problems in a similar manner with those, by rewiring.
John Vincent Atanasoff had written in 1940 a very high-quality document about the design of his computer: “Computing Machine for the Solution of Large Systems of Linear Algebraic Equations”. It is unknown if anyone of the ENIAC team had read it, but it is known that one of them had visited the designers of the Atanasoff-Berry computer, inquiring about the electronic circuits used by them to implement arithmetic operations and data storage. Later, during the design of ENIAC and after that, they never mentioned any connection with the earlier electronic computer.
ricksunny 6 hours ago
adrian_b 6 hours ago
Nonetheless, the programs whose performance is limited by the speed of the main memory can be divided in programs whose performance is limited by the throughput of the memory interface and programs whose performance is limited by the latency of the memory accesses.
The programs from the first class will have the same performance when using a serial memory or a RAM, if they are equally fast for sequential access, but for programs from the second class, it is important to have a RAM as the main memory, otherwise they would be very slow.
In order to measure the performance achievable by programs from the second class on a given computer, it is necessary to run a benchmark where the addresses of the memory accesses are generated by a good random-number generator.
The reason is that modern CPUs have a variety of hardware prefetchers that attempt to predict the next memory address, so for meaningful results that reflect the true performance of the memory you need truly random addresses that are impossible to guess by the hardware.
Thus nowadays the latency of the memory accesses of a RAM cannot be measured otherwise than with really random accesses and a memory chip must be designed to have a low latency even when successive accesses happen at unpredictable random addresses, not only when the accesses are at arbitrary addresses, but those can be predicted in advance of the actual accesses.
So there is an argument in favor of the term RAM, because random access is the worst possible case and the memory must still be able to handle it.
HarHarVeryFunny 4 hours ago
The whole document is, as the title promises, really more of an engineering one - a report on the EDVAC - rather than some clean abstract treatise on computer architecture.
https://web.archive.org/web/20130314123032/http://qss.stanfo...
somethinsfishy 3 hours ago
tovej 3 hours ago
von Neumann deserves credit for many things, but not this.
He famously brought a lawyer with him to a meeting after they wanted to discuss the report and the rights of their invention. The whole ENIAC saga has made me reconsider von Neumann as a person. He was a talented mathematician, sure, but he seems to have also been a greedy scumbag.
Eckert and Mauchley did not try to conceal their inspiration from Atanasoff, although I believe there was a court case on this topic.
And it is completely ridiculous to claim that von Neumann would have been able to describe the computer better than its inventors.
It's eaually ridiculous to consider that they would not have published themselves. They were collaborating with von Neumann on the report after all.
Goldstine and von Neumann stole the credit from Eckert and Mauchley, that is documented history.
Animats 3 hours ago
Eckert and Mauchley came from a background of trying to get compute done with modified IBM hardware. They were painfully familiar with the lack-of-memory problem. Everybody involved with that era of machinery was. (I've used IBM plugboard wired tabulators, like the one at the Computer Museum in Mountain View. My high school had one.) The ENIAC had a workaround for lack of memory, huge rolling cabinets of manually set rotary switches. If something better had been available, it would have been used. You have to appreciate how much early architecture was restricted by available components.
The first real hardware breakthrough was acoustic delay-line memory. First mercury tanks, then long coils of steel wire. Once that was available, it was clear that was the place to put the program. But it took a while to make that work reliably. Then there was Williams tube electrostatic storage, and high speed drums, which got things going. Sort of. Memory cost was an issue well into the 1980s. In the early 1970s, a megabyte cost a million dollars. Cheap memory didn't appear until the 1990s.
The big lack in Von Neumann's architecture was index registers. He was into storing into the address part of instructions. The Manchester Mark I had the first index register (the "B box"), at which point programs could be read-only and still be able to index arrays. That completed the basic CPU architecture.
ilamont an hour ago
This is a genuinely rare experience. Was it like old hardware on a shelf that no one knew what to do with and you tried it out? Or this was how lessons/clubs/assignments got things done, using an antique IBM tabulator?
When I started public high school near Boston in the early 80s we didn't have Apples or TRS 80s or PCs, it was terminals that used printed output ... can't remember the details, maybe DECwriter to PDP 11.
rookienumbers30 3 hours ago
seemaze 5 hours ago
it covers von Nuemann’s time developing the IAS machine at Princeton.
[0] https://www.penguinrandomhouse.com/books/44425/turings-cathe...
inasio 7 hours ago
edit: article is called Birds and Frogs, by Freeman Dyson https://wucj.lab.westlake.edu.cn/Others/Dyson_Birds_and_Frog...
BeetleB 7 hours ago
zamadatix 6 hours ago
rawmaterial 7 hours ago
aazo11 7 hours ago
tbagman 7 hours ago
What made von Neumann great? Was it the extraordinary rapidity with which he could understand and think and the unusual memory that retained everything he had once thought through? No. These qualities, however impressive they might have been, are ephemeral; they will have no more effect on the mathematics and the mathematicians of the future than the prowess of an athlete of a hundred years ago has on the sport of today.
random3 7 hours ago
iaad 6 hours ago
bmitc 6 hours ago
Betelbuddy 8 hours ago
runlaszlorun 8 hours ago
matltc 8 hours ago
GodelNumbering 6 hours ago
My template had guessed,
"sounds like someone who enjoyed working in quiet spaces" -> Nope, he liked loud environments to get his brain going (apparently Einstein once complained about Neumann being noisy)
"he would have been a focused person" -> Nope, he never worked on anything for too long
"unlikely to be motivated by money" -> Nope, he famously “loved money” according to Wigner [1]
"probably not someone who stares at women" -> nope, at Los Alamos, secretaries sometimes put cardboard across the open fronts of their desks because otherwise Neumann would stare
Tl;Dr: I find him fascinating.
[1]: interestingly, there was a group of Jewish Hungarian scientists - von Neumann, Eugene Wigner, Leo Szilard, Edward Teller, and Theodore von Karman - all brilliant, all born within one-mile-radius circle in downtown Budapest, all emigrated to the US, collectively known as Martians by their colleagues.
HarHarVeryFunny 4 hours ago
Johnyjohnson123 6 hours ago
bicepjai 7 hours ago
chihuahua 4 hours ago
bicepjai an hour ago
Betelbuddy 8 hours ago
jan_m_savage 8 hours ago
simianwords 7 hours ago
gjm11 6 hours ago
The average Wikipedia contributor (even ignoring the possibility that they might be a robot) is not an exceptionally good writer, because very few people are exceptionally good writers, because that's what "exceptionally" means.
stuxnet79 5 hours ago