skysight-inc/HackerNews huggingface dataset:
> A lot of physics seems unnecessarily expensive to compute.

When you make a simple simulation of rigid bodies with classical physics you often get numerically unstable results - bodies jerking against each other, slowly passing through, etc. One common way to solve this is to introduce a "frozen" state. When objects are close enough to be at rest with balanced forces - you mark them as frozen and don't compute them every frame to save computing power. You only unfreeze them when some other unfrozen object interacts with them.

Additionally hierarchical space indexing algorithms are often used to avoid n^2 comparisons calculating what interacts and what doesn't. And these algorithms often use heuristics and hashing functions with collisions to subdivide the problem, which might result in objects becoming unfrozen without actually touching each other.

The result from inside this simulation would be weird, nonlinear, nonlocal and look a little like wave function collapse (if particle A whose coordinates hashed through this weird function are the same as those of particle B happens to unfreeze - the particle B unfreezes as well despite not interacting in any way). And this would be probably considered "hard to compute" compared to the simple equations the system developer wanted to simulate.

Example that might be more relatable for scientists - it's much easier and cheaper computationally to make a numerical simulation for 3-body problem than to make an analytic simulation of it. But describing this numerical simulation behavior in terms of physical equations requires much more complex model than the equations that you wanted to compute in the first place. You have to include implementation details like floating point accuracy, overflows, etc. And if you go far enough you have to add the possibility of space ray hitting a memory cell in the computer that runs your simulation.

I'm not saying this is the reason QM is weird - I don't understand QM well enough to form valid hypotheses ;), but I'm saying we might be mistaking the intention of The Developer with the compromises (s)he made to get there. If you take any imperfect implementation of a simple model and treat it as perfect - the model becomes much more complex.
There is nothing incorrect about Continuous Wave, as it refers to the lack of modulation of any kind on the signal.
Also see WSJ article on Amazon potentially needing to shed assets: https://news.ycombinator.com/item?id=27474448
Your point is valid and correct.

Most of you remember Twinkies, its parent company going bankrupt and them being gone... Those products were delivered to stores, fresh every day(ish) by manufacturer employees and put ON THE SHELF by them... This still remains true for tons of products.

For some products grocery stores function like a merchant on amazon.

Data tracking... well that really matters to a grocery store, because people have "brand loyalty" and tend not to return (ever again) if their "item" is out of stock. These anchor items are often loss leaders (detergent is the massive example).

Amazon isn't any different than anyone else, and isn't even the biggest one (Walmart still has that crown).

Oddly I could make an argument that amazon, being allowed to be dominant and pushing large retail out of business would be good for everyone... a return of small retailers might happen on the back of that.
I think randomization plus weighting for geographic distance could work. The issue with busing was never the actual busing, and there are plenty of places (like my hometown) where parents send their kids further out to ensure that they attend a school that is majority their race rather than the local neighborhood school.

I lived in Cambridge, MA, and they have successfully desegregated their schools with a similar approach that kept transportation very low and remained a popular plan with most parents (75% approval income over $100k, ~95% approval income under $75k).

In another place I lived, the top public magnet school was ~95% black. White parents pretty much universally refused to send their kids there, but would send their kids to a different magnet that was further away.

The "underlying socioeconomic realities" are often overstated compared to the unfortunate, but big reason that we don't like to talk about, which is lots of parents (to some extent, understandably) are afraid to send their kids to a school where they would be in the racial minority.

Schools are now as segregated as they were in 1976, which represents a backtracking from the peak in 1988. That represents an erosion of will more than a vastly changed socioeconomic reality.
> It's making the point that skin color is far more diverse than simplistic ideas of race, and far less-correlated to race than one might think.

My point is that very few actual racists (outside the US, at least) think in terms of skin colour, so if that is the purpose of the book it seems to miss the target.

I would say that it is the skin colour concept that is simplistic and meaningless though, it is race that is a diverse and interesting concept, related to biology, geography, migrations etc.

Skin colour is just one out of hundreds of characteristics, and arguably one of the least interesting and meaningful ones.
> Once you're big enough to be a target, you have to spend money on lobbying, and contribute to campaigns.

Absolutely not. You do the opposite of that. You go at layer zero. At the population level and enter the culture wars arena with the goal of winning.

Some of these companies are structured in a way that the founders are poised to retain control of their companies till they retire (Google, Amazon, Facebook, Berkshire).

If you are Zuck or Brin or Dorsey and you want to do this until you are 95 like Buffett then you are better off barking and biting back, acquire a reputation of a fighter so that people like Sanders and Warren would leave you alone. There will be consequences such as employees criticizing and leaving but in the long term you are better off fighting.

When a politician comes after you and your company, you just attack back, if you are not prepared to do this you should simply not start a proper company and opt for a carrer in a hedge fund instead, where you can make money in the dark.

Founders and CEOs should not be the first offender but when they are called out they should absolutely attack back.

Sanders is pouring manure all over corporate America since 2015 and all he had to endure was Michael Bloomberg attacking him back for half a debate, and wouldn't have happened if Bloomberg didn't decide to run.

If a guy like Bezos or Zuck were to tweet back at Sanders something to the tune "I've started a company in a garage and now it has the same credit rating of the US Government, what have you done with your life?"

That would be fair game, politicians prey on weakness, they smell it and keep biting till you lay there unconscious
Yep. I don't feel the advice in this piece is very useful if you want to create an actual mature product. When you create for just yourself or "one specific person", surely you scratch some specific needs, but how do you ensure that your product won't be a market failure? I'm totally for creating tools to your own heart's content, but this sounds like bad advice when you actually create a for-profit product as a full-time job. A lot of parts of this article also ring really hollow and sound like the cliched "follow your own passion" talk without much substance, which is not that surprising I guess seeing that the author is a uni freshman.

I think there is tremendous value in life in thinking about how to leverage your abilities to the maximum effect to serve and make an impact on the others, even if it might imply giving up part of what you thought you personally like to do the best. (Cal Newport's idea and his dislike towards the "follow your passion" slogan is somewhat similar to this.) A simple example would be trying to build something in your favorite but esoteric programming language which pretty much nobody else uses, instead of using a boring but mature technology with a lot of community support, which practically all big companies do. Will your pet product reach millions of people? Unlikely. Will you lose some of the "personality" that you tried to cling to, if you either join a big tech company, or grow your own company rapidly using battle-tested technologies? Probably. But in the end most wisdom seems to suggest that being able to serve the others (and by definition millions of others are bound to be "faceless") will be ultimately much more fulfilling and mature than attaching too much self-importance to your own peculiar quirks and beliefs that you just can't let go of.
Are there write-once SSDs? They would have a tremendous capacity. Probably good for long term backups or archiving. Also possibly with a log structured filesystem only.
Speaking of xkcd, 2021 is return of "All your bases"
See alt-text on image.

https://xkcd.com/286/
Sigh. Headline is deliberately begging the question.

The question at hand was about trans people, and their participation in women's sports. It's a legitimate question, and not aided by simplistic statements that deny the existence of trans people. It's a class about gender, women, and the law. It's not helpful to walk in and insist that your definition of gender is the only valid one.

The student was investigated not for the "unacceptable opinion" but for being confrontational in class. They decided that she wasn't, but they considered the complaint legitimate enough to investigate.
Obviously we don't know why Stripe rescinded the offer - staffing changes, reorganization, miscommunication, could be lots of things. I think it's reasonable that companies should be able to do this, but I think they should feel obligated to compensate the candidate. Something like "after >48 hours after offer received (signed?), if we rescind the offer, we pay the candidate as a consultant for 3 months of the wage they would have received"

That would both provide some relief to the candidate, who might have passed up other jobs or resigned from their current job already due to the expectation they have a job, and would provide some incentive for companies to not do this.
Well if you take video or many photos of a house you can create a 3D model using photogrammetry. I was recently served an ad showing that I think Redfin includes 3D photogrammetry captures of some homes. So it’s perhaps already being done in the wild.
Gotta say kopia does have a very strong restic vibe to it.

Not a bad thing, just means that restic managed to get lots of things right.
Hard disk chunks are 512 bytes classically, and smaller than the DDR4 row of 1024 bytes !!

So yes. DDR4 has surprising similarities to a 512byte sector hard drive (modern hard drives have 4k blocks)

>> What’s the difference between a cache line and a row in RAM?

Well DDR4 doesn't have a cache line. It has a burst length of 8, so the smallest data transfer is 64 bytes. This happens to coincide with L1 cache lines.

The row is 1024 bytes long. Its pretty much the L1 cache on the other side, so to speak. When your CPU talks to DDR4, it needs to load a row (RAS all 1024 bytes) before it can CAS read a 64 byte burst length 8 chunk.

-----------

DDR4, hard drives, and Flash are all block devices.

The main issue for Flash technologies, is that the erase size is even larger than the read/write block size. That's why we TRIM for NVMe devices.
I really see no problem with all the above.
I've seen a number of things that relate to this:

1. a printer troubleshooting site where the only question is "What brand/model of printer do you have?" It suggests the most common problem, and most often it's the rignt answer.

2. Sorbet is a static type checker for Ruby that will make suggestions for typo's similar to your example. It also has an autocorrect option, but use with care because sometimes it will choose the closest but completely unrelated name.

3. Error messages that are/have clickable links, which take you to a site that has entries from people who got this error and what they found caused and if known fixed it.
I don't know about Trader Joe's specifically, but a lot of "Store Brands" are made in the same place as the name brand. It's just a giant game of price discrimination.
I spoke to a commission of congressman about this topic. (they wanted to talk to small startups). It seems really difficult to effectively regulate this.

- acquisitions are part of what make the startup ecosystem work. It's not at all clear which acquisitions you should block
- the bundling approach that google uses makes things like android free
- you dont want apps on iOS and android running their own payment infrastructure since some will abuse it

There definitely needs to be regulation, but its not at all easy to see what shape it should take.
It looks like you can just snooze it, but apparently it will continue to nag you:

>Free users will not be required to install any particular update, but they will continue to get reminders to update.

https://www.docker.com/blog/changing-how-updates-work-with-d...

Super weird.
AnyTrans for iOS 8.8.2.202010610 Crack 2021 Full Download
I am referring to economic stability.
for physical stores sellers fight over having products placed on eye-level shelves vs. not
> Most non-high income people do not have huge rainy-day funds.

Why do you suppose that is? See, the system protects itself.
Can memcpy be implemented in LLVM IR?
Earth's core is growing 'lopsided' and scientists don't know why
You think that building 4 systems in 4 locations is likely to have a similar cost to one system at one location? For small systems, the fixed costs are a significant portion of the overall system cost.

This is doubly true for physical or self-hosted systems.
> You’re free to look away.

I read plenty of these blogs, the idea that they only have a home at substack is absurd, and there's plenty of people regularly saying more controversial things in the conservative media.

Tyler Cowen, etc. are hardly censored.

I just find them boring.
The whole paragraph:

> Avoid arbitrary limits on the length or number of any data structure, including file names, lines, files, and symbols, by allocating all data structures dynamically. In most Unix utilities, “long lines are silently truncated”. This is not acceptable in a GNU utility.

... goes against MISRA C, which certainly is preferable in the domain I work, embedded systems - because dynamic allocations all over the place are a recipe for CVEs.
Social Visitors can change any business to boosting
Please don't take HN threads into ideological flamewars, especially garden-variety racewar, which is particularly tedious. We're trying for curious conversation here.

https://news.ycombinator.com/newsguidelines.html

Edit: it looks like you've been using HN primarily for ideological battle. We ban accounts that do that, regardless of what they're battling for, because it destroys what this site exists for. Please see my explanation to another user in this thread: https://news.ycombinator.com/item?id=27475945.

I'm not going to ban you, but if you keep doing this we're going to have to. If you wouldn't mind reviewing the guidelines and taking the intended spirit of the site more to heart, we'd be grateful.
600B seems like a totally arbitrary made up number to target Amazon but leave out Walmart (which is close to 400B). Looks like Walmart lobbying dollars are bearing fruit.
I believe you about polish and performance, but that solution is neither open-source nor cross-platform (unless I failed to find it on the website).
Seismic Data Helps Scientists Forecast Volcanic Explosions
I worked for Frito Lay as a salesperson and yes perhaps only 20% - 40% of grocery store inventory is maintained by the store staff. The rest was space that we were allocated to sell our stuff.

Stores would pay for the inventory, but we would rebate them for what would not sell as an incentive to make sure we put out products that actually sold.

But I would literally come in every day to the larger stores and put product on the shelf and argue with the manager about inventory and clean up our area.

None of the stores I worked at explicitly sold shelf space (I think), but our corporate worked with their corporate to determine how much space in each store would maximize their revenue. I am sure newcomers would have to do extra to guarantee they would make enough money for the stores to take risks on them.

Needless to say, they had all of our sales data when it came to developing store brands.
part of "elite overproduction" (or even the crux, as I understand it), is giving more degrees than jobs actually exist for those degrees. from this perspective, it doesn't make any sense to spend more tax dollars on even more degrees that we (allegedly) don't need. a college degree will stop being a "ticket to the middle-class" (as my alma mater described it) somewhere before everyone has one.

that's the economic side of the argument anyway. I partially agree with what you said further up the chain, that education is a value unto itself. but it depends on what kind of education is actually being obtained. imo, a four year program that focuses on one main area and requires a smattering of intro-level courses in others isn't worth that much if you don't end up getting a job related to that area of focus. I guess if the major was interesting to you, that's something, but was it worth four to six years of your life?
> The speed of development was very low,

Not a part of GP's assertion

> and how many people can check the proofs?

it's not necessary, the proofs are checked using automation. I'm directly taking a shot at this assertion:

> Static analysis tooling has demonstrated that it isn’t up to the task
> I agree that it's nice if you have assets

Most people have nonfinancial assets (e.g., durable items of personal property.)

> _This_ literally is the reason owning a home is next to impossible for millennials and gen-zs.

No, its not, because its been true (and inflation higher) for preceding generations, so it can’t possible explain why Millenials and beyond have it worse than Gen X who had it worse than Boomers. Tax and spending policy shifts (Reagan's being the biggest single one nationally, but there have been several subsequent national ones, and CA Prop 13 and its — mostly much weaker — copycats play a role, too) are a much bigger factor

> Typically this looks like the 2008 crash

The 2008 crash wasn't a regularly occurring event. (And as bad as it was, wasn't nearly as bad in and of itself as it is widely perceived; it gets magnified because — again for reasons that trace directly back to fiscal policy choices — the expansion after the brief and shallow 2001 recession was, up to that point, pretty much the most hollow expansion in modern US history, with, IIRC, every income quintile but the top doing worse, and even the top being mostly flat except for the top couple percent.)
You can honestly look at this map of US military bases surrounding China and say it’s unreasonable to frame the US as the aggressor?
https://www.wsws.org/asset/614e577a-e542-46f7-b838-fbf522495...
Stop shutting down nuclear reactors and build nuclear power plants
2021 Pulitzer Prize Winners
Could you recommend one or two of these short stories? Thank you!
While I feel like the words you used caused some debate, if I’m understanding the premise correctly I think you’re on to something:

If a technology is objectively more wasteful than it could be it should be penalized, and as we move forward with newer/better/more efficient technologies the standards bar should raise with them.

For anyone who has further concerns: let’s imagine that we have a magic calculator that tells us the total and complete cost of anything, from the true local socioeconomic impact of extracting materials to the CO2 emitted in production to the cumulative future cost of disposing of it. And that we could use that as the measuring stick.
The space could be a graph ("network") and the edges could be e.g. links or some measure based on similarity.
Photosynth was a great app, really disappointed when it was discontinued. Does anyone have the backstory on that? It seemed to have a leg up on Google’s street view/cardboard app at the time.
Hunting Leaks, Trump Officials Focused on Democrats in Congress
To each their own.

For a lot of people it’s way more fun to make a new thing than to fork and patch someone else’s.
These are great and provoked me to really look into how it worked when I discovered them a few months ago.

I'd suggest watching the 2nd (retrospective) video first, and then the first video if you're interested in more detail.
Those who do not believe amyloid is a cause, but rather a symptom.
I’m pretty sure that’s not the case anymore. FAANG definitely lobbies now.
"To prepare for the 4-week release cycle starting in M96, we'll move from our current 6-week release cycle to a 10-week release cycle for M95."

Sounds funny, but stuff happens :)

Seems like a good thing to match the chrome cycle.
The key here is Postgres 9.5. AWS DMS does not support it because they require logical replication support.

A few years back I migrated a PostgreSQL 9.2 database to AWS and wasn't able to use RDS because logical replication was not available.

I did try to use Bucardo but ultimately didn't trust myself to configure it such that it wouldn't lose data (first attempt left nearly all BLOBs unreplicated because the data isn't actually in the tables you set triggers on)

Physical replication to a self-built instance was easy, I was 100% confident it wouldn't be missing data, and the downtime from cutover was about 15 minutes (It involved restarting piles of slow Java applications)
Nice try Frankenstein
Which part of the government? Because the US is 19th, which is not bad at all.

https://www.theglobaleconomy.com/rankings/wb_government_effe...

Is it the military? Is that part of government spending, in your opinion? Because it's definitely not the FAA, or the FDA, or that agency that is supposed to oversee the housing market, or the IRS.

Any agency that is supposed to make sure that the consumers are not put in danger by reckless money-makers is at a constant risk of being castrated, especially with Republicans in the control room.
It's vaguely similar, but there's a huge difference in that flash needs to be erased before you can write it again, and that operation is much slower and only possible on much larger sizes. DDR4 doesn't care, you can always write, just the read is destructive and needs to be followed by a write.

I think this makes the comparison unhelpful since the characteristics are still very different.
I think the problem then becomes what message gets what tag and you have to bikeshed over if smaller or larger numbers mean bad/urgent messages. It's like the same problem of port allocation that IANA was created to solve. Do we really expect every kernel module to adhere to e.g. registering a unique tag with some authority for their messages? What if two separate modules print the same tag? And so and so on, and all this time of arguing over what is the "Linuxy" way to match numbers with format strings would be better used reviewing commits that could actually improve the kernel.

I think the better morale of the story is to not rely on third party log output to troubleshoot problems. If you want to be notified when the CPU catches fire then you should have a daemon watching CPU temp waiting to trigger the event, not relying on some black box to log the correct line at the right time and some other black box to match the line against some ancient regex that nobody understands anymore. At the very least your temperature monitoring daemon should `printk` a message you decided upon instead of someone else.
I think if you look at the actual current state of the repair industry it’d scare you off the idea fairly quickly. There are very few competent people and even fewer business where competence is promoted.

I’m going to slap Rossman here as well who does some pretty scary hack jobbery and passes it off as a fit for purpose repair rather than a data recovery last resort.