skysight-inc/HackerNews huggingface dataset:
If you use harmonic gear boxes and reasonably nice servos you could build this arm with a moderate quality machine shop to support the weight of the print head. I'd say that glued on aluminum lugs and precast CF tubes would get you pretty far.

to me, the big benefit of something like this is that you could reasonably run 7axis - Arm is 5 axis, but then add tilt/swivel to the bed. it would allow you to choose in which direction you were building. I don't think any of the standard slicers for cheap 3d printers can do that stuff yet, but maybe eventually CAM packages will be able to support more modes of additive manufacture.

that said, for large parts this would maybe be worthwhile. For smaller complex parts, the powder bed approach for the HP multi jet fusion printers (an example) is still nicer than this because it keeps the part fully supported during the whole print so you don't need to worry about slump.
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Conservative media has been and is almost exclusively doing the vocal delusional pandemic denial. You are completely right about this. The source claiming the right-wing conspiracy theory has been an outlier here.

There was an article from a popular outlet I've been particularly surprised about, since left-wing media otherwise mostly took the pandemic seriously here and around the world, and tried to stay science-based.

This article remained in my memory because they present themselves as fact checkers and are popular with many prominent people in my primary political and media spectrum.

They politicised covid early on and claimed it is just an anti-open-borders / anti-foreigners campaign: "The secret reasons why conservatives want you to be afraid of coronavirus": https://www.volksverpetzer.de/politik/rechte-panik-corona-vi...

This is from 27th January 2020, while many people here on HN likely have read the first concerning reports about this virus at the end of December 2019. I started being careful from mid January.

Until today this page self-righteously claims that "the available facts at that time" pointed towards nothing to be concerned about in the Western world, which is simple not true if you took your research seriously.

I mentioned that Men in Black scene. There were several other topics where I could find concerning evidence by carefully browsing otherwise questionable sources very early on – the lab leak theory (ProjectEvidence, Zerohedge), the aerosol transmission, that mask wearing is reasonable, the unclear and potentially harmful effects of the spike protein itself –, while I've been completely ignoring such websites before covid. ( Other things like people just dropping dead on Chinese streets did not turn out true ofc. )
> BEE (affirmative action) had the right idea, but the execution was not great as it was riddled with corruption.

Not surprising. Affirmative action and other “right ideas” like this can only result in corruption and racial tensions. Straightforward help to the poor is more useful, but unfortunately it is less politically popular and harder to exploit for corruption.
Americans are so desperate for the narrative they've been conditioned to believe is true.
A checkbox labeled "Title Bar" at the bottom of the customize window
That's the general issue with subscriptions too. I'm fine with paying Adobe a subscription for a program that I use on a regular basis. I'm not fine with paying Adobe a subscription for a program that I might pull out to do something with once or twice a year.
"invest in some good ol’ hard work today, as this stock always goes up, and your investment will definitely pay off many times over"

When it seems like everyone is getting rich overnight, and you're not, it pays (long term) to remember words like these.
Do you mean reel mower? Those are pretty great, but they do need to be kept in good repair, clean, lubricated, and blades sharp. And you have to cut often enough so the grass doesn't get too tall. But for a small city lot they're pretty neat.

We had one when I was growing up, but it was none of those things so it was mostly a great big PITA ;).
This is already used for large-scale construction, e.g. a 3D-printed bridge [1] was made using an industrial robot which wielded a MIG-welder fed with stainless steel thread.

This system still uses chopped fibre in a plastic base, I wonder what the results would be with directed longer fibre which is laid down in the stress direction. This would necessitate a fibre cutter - a laser cutter would be the most flexible - in front of the print head so it would complicate the design but the resulting artefact would be much stronger. Such a longitudinal fibre printing head could be part of an assembly with different print heads in a revolver assembly like shown in this video.

[1] https://mx3d.com/industries/infrastructure/mx3d-bridge/
Following that reasoning, wouldn't any type of engineering be applied philosophy?
i am getting google results outside of china for that search term. first result is the wikipedia article with that same title. and many image results as well.
DDG: image searching "tank man": "blocked by safe search" and then "sorry no results here" when disabling safe search entirely
Ask HN: What Killed Manual Software Testing?
Hi HN! I've been working in software development for the past 8 years in different capacities, always for startups or SMBs. Recently I've been thinking about in-house manual software testing - or rather the lack thereof - I've experienced during that time. What gives? Did it ever exist in "typical" software development? If yes, where did it go?

Trying to push the issue in multiple projects I've been involved in has so far been met with resistance, calling it unnecessary. The usual counter arguments are:

- Users will report bugs
- The customer will test it before delivery (in case of contract work)
- Automated testing

Am I crazy to think the first two show a lack of care for quality of our software, and that effective automated testing is too hard (writing tests that catch a wide range of non-regression bugs is often more difficult than writing the actual program) and expensive for projects on limited budgets? Wouldn't a few QA staff for testing on a regular basis be cheaper than the additional engineering hours for automation or support for unhappy customers?

The only time I've seen structured manual testing in practice was in a company where the entire development and IT staff was assigned to it the day before a planned release. It was grueling and linear work, but even that uncovered bugs that automation didn't catch. At another project, the bugs seemed to become more severe after people in our company (especially outside engineering) stopped using it on a regular basis. Would hiring someone to do it as their job help? Are there resources out there to get started on setting manual QA up?
I think you can have that. you can buy a robot arm, hook the servos or steppers to LinuxCNC, and control it directly through there. If you do this, look for an arm made with Harmonic drives for the best control.
"tank man china" gets me the expected results on DDG
dumb algorithm can't figure out the context of "Tank man"
It depends on your issue. We got good support emailing with the TF Lite team on a neural net bug. I think if you’re interacting with open source in a value add way google support is often quite good. If you’re looking for support for integrating for sales or classic customer support it can be terrible to non-existent.
log2 is generally implemented with some variant of the "count leading zeros" instruction, but the general popcount is irrelevant
How exactly are alternative news sources more trustworthy than mainstream news sources? Your reasoning is that "mainstream" (I truly hate this moniker) news serves to present biased information, how do alternative non-vetted sources avoid this pitfall?
They are a lot like beach towns. People come and go and there are a few locals who stay forever.
Taxes are practically irrelevant in the US. The gov just goes to the Fed and and increases it's balance.

The real issue is that those in power don't actually want to lift up those that are struggling. I'm not saying there aren't some good politicians--I'm saying politicians don't have the power.

When the government isn't acting on behalf of the people, more taxes would only serve to harm.
Insufficient scientific data, no rationale
After chloroquine, same kind of fallacies are used to push ivermectine..

"Ivermectin has been shown to inhibit the replication of SARS-CoV-2 in cell cultures. However, pharmacokinetic and pharmacodynamic studies suggest that achieving the plasma concentrations necessary for the antiviral efficacy detected in vitro would require administration of doses up to 100-fold higher than those approved for use in humans."
https://www.covid19treatmentguidelines.nih.gov/antiviral-the...
Tested this on Bing/DuckDuckGo/Google/Yandex/Baidu. Only failed to show up on Baidu.
The AWS container services in flowchart form
College towns are good because of the kinds of adults that live there, not because of the students.
I have a pretty customized userChrome.css as the main feature I use in Firefox is multi-row tabs. This used to be provided by a XUL extension but now it possible in a somewhat less fantastic way with userChrome.css.

The problem is that every major UI change breaks the userChrome.css and I have to spend a while tweaking it or waiting for someone else to design it up. It's frustrating.

Since I knew this update was coming I disabled automatic updates for the first time ever. It might be a while before I decide to upgrade.
All of the material (that is below the critical temperature, critical current, and has no magnetic field penetrating it). Which is to say not all of the material.

It is common to have pockets of non-superconducting material in superconductors. If they get too big in the wrong places then you quench.

Applied magnetic fields are common because, unsurprisingly, superconductors often find themselves used to make large magnetic fields without having to pay the electric company or cooling ohmic losses. Some applications can get by with just one magnet. Many others cannot.
Nontechnical overview of Firefox address bar
And in case there was any doubt he also came out and said he intentionally lied about the required level of vaccination needed to achieve herd immunity [0] so that people don’t get too discouraged. He seems to be squarely in the “ends justify the means” camp. While the effectiveness of that is debatable, I find it hard to believe anything he says at this point.

[0] “In a telephone interview the next day, Dr. Fauci acknowledged that he had slowly but deliberately been moving the goal posts. He is doing so, he said, partly based on new science, and partly on his gut feeling that the country is finally ready to hear what he really thinks.” https://www.nytimes.com/2020/12/24/health/herd-immunity-covi...
Oh yeah, I'm with you there 100% (about it not being aliens). I really would like to know what it is tho!
Interpretation of the employment statistics was also a little odd to me. If you look at the figure, it's not like there's a leveling off or decrease in employment numbers, it's just that the employment numbers haven't reached pre-pandemic levels yet. My interpretation of those numbers is it could be another year or two, or maybe longer, before employment numbers increase to pre-pandemic levels, assuming current trends hold. Maybe the author would argue that that's too long?

As an aside, the lumber price increases seem historically anomalous. Going back as far as I can, the price increases seem like an order of magnitude bigger than typical price variation. With other commodities, the price increases seem in line with past variation (at least in the last few decades). It seems like the lumber trends are worth paying attention to, almost like oil prices in the 70s (but again maybe that supports the author in a circumstantial way).
Admit racism exists and is ascribed to you.

You are clearly a racist then, admit it
>I think that's sort of covered by "Is usage predictable for the customer?"

I initially thought this too, until reading the content of that point. The emphasis is really predictability in this section, even if usage is consistent, customers will have a hard time trusting it if they don't understand what it is based on.

Cloud providers are generlaly selling to technical customers. But you need to make sure you pick metrics that your customers understand. If you were selling a recipe system and your target market is restaurants and chefs, would you charge for PostgreSQL table usage or the number of recipes that can be stored?

Saying you can store 100MB of table data, but that should fit for your 100 recipes, is different than directly specifying that your plan includes 100 recipes. Even if the customer plans on never actually having more than 80 recipes.
But no images on Bing for the same query.
I confirm the symptoms happened for me as well. I used the !s bang to have startpage search it and startpage returned the image in the carousel and image results.

I'm not certain I can continue to use duck duck go if it is going to give me results subjected to CCP censorship. I switched to it from Startpage as it had a less shady reputation than the latter, but Startpage hasn't messed with my actual searches like DDG now has though.
Twitter on the blockchain, got it - great idea, setting up the Clerky docs right now, assuming you are good with 40/40 split
I am wondering why the writer got so famous after publishing this book. He was invited by google at "Talks at Google" as well as Oxford union to give talks and share some experiences
The “rise of remote work” is a greatly misunderstood phenomenon. At the high end, the most talented slice of software engineers will be able to define the terms and location of their employment to an extent never seen before. On a much larger scale, corporate drones like those seen in “The Office” will lose their jobs to people in Argentina or the Philippines. We are just not going to move to a world where a substantial part of the workforce is living in Wyoming with a view is Grand Teton pulling down $600k a year.
"We all live in America" -Rammstein, 2004

"..." -..., 2021
In real Desktop Publishing software, text (content) and its style (layout) are separate — the text usually comes in from an external source (e.g. a file on an SMB share; a document in a CMS) and can be updated independently of the layout.

The linked text format is usually Rich Text (RTF). This allows a lot of things, but the Desktop Publishing tools only interpret the tags for bold, italics, underline, and a few other things (strikeout, subscript, etc.) All other styling in the linked text, they throw away.

This is precisely because, as you say, those specific styles actually denote meaning. They're something the writer adds. No other styling is used from the linked text, because none of the other styling is the writer's job.

All other styling is instead applied to the block(s) within the layout where the text gets embedded into. It's the layout designer that gets to decide the font, size, spacing, etc. for the text. Those attributes aren't stored with the text; they're stored with the layout.

To me, this makes far more sense as a workflow, even if you're a single author. I constantly wish that "word processors" had restructured and absorbed ideas from Desktop Publishing software when it came about. Instead, we got the garbled hybrid: you can have "document styles" like Title, Heading, Body, List Item, etc.; but they are essentially markup, moving around with the text (rather than there being any concept of an "section of the document" that gets styled, that text can be moved into/out of, and where the styles of that section will apply to the text only while it remains inside that section, such that moving text out of that area doesn't copy the styles of the section, only the styles of the text.)
Does surprise me to be honest, of course the CCP no doubt does exert power over companies that want to work in China and this can influence behaviour outside the country too.

But surprised to see this so blatant and really quite clumsily too as easy to find in other contexts without difficulty.
I'm curious why this is downvoted. Do people think others shouldn't become better people, or that they should never be forgiven for past transgressions they've learned something from?
Unfortunate, the "left media" also faces massive credibility problems due to their willingness to uncritically publish anything they could spin as negative for Trump, regardless of veracity or verifiability.

Partisanship is a disease that is destroying our democracy.
This explains why I get along with my PMs so well. I have zero interest in dabbling in their domain, and am happy to just take care of the How/When/Who.
Not to be nit-picky, but I wonder if it shouldn't be "Practical Linux"? How many people work with Unix vs Linux these days? I would guess amongst the graduate demographic Linux is also probably a more recognizable and attractive term than Unix.

On the general point though, I totally agree. Even after nearly 30 years of working on Windows, learning Linux has been one of the best investments I've made over the past decade. No matter what OS you run locally, doing anything with the cloud, Android, Docker, etc. means understanding the basics of Linux.
Another stereotype.
Weird. I’m seeing this in Canada too. I see the Wikipedia article too but no images show up on the image search.
I get the image if I'm more specific on DDG, via "tank man tiananmen square". Maybe just DDG needing more context than Google?
The government should also cover any damages, then, for failing to protect its citizens, if it will prevent them from remedying the situation themselves.
Doesn't DDG use Bing on the backend (at least to some extent? Forgive my ignorance here). My hunch is that it has more to do with that, as opposed to it being a conscious decision by people at DDG.
Does the GDPR apply to companies outside of the EU?
Philosophy of Computer Science [pdf] ( https://cse.buffalo.edu/~rapaport/Papers/phics.pdf )

And the HN post about it - https://news.ycombinator.com/item?id=20912718

There more than a few thoughts in there about what computer science is and isn't.
Why is that relevant here? The scale of manufacturing causing jobs to be outsourced surely dwarfs it.
Probe, probe, probe, that’s all they ever do. But they know and Facebook knows that no action will ever be taken
The Mesh Network for Next-Generation Neoverse Chips – WikiChip Fuse
Nigerian government suspended operations of Twitter in the country
> Interesting that there are marked male/female differences in Turkey, Colombia, and Mexico

As someone living in Mexico, it is not at all a surprise to me. Stay at home mom is incredibly common here. Also, I doubt the stats capture the cash based employment economy that many women are in here.

We have a maid that cleans 3x per week. We pay her in cash at the end of each day. She has a full schedule and works six days per week. I highly doubt she would show up in the statistics as employed.
This is an awesome insight, thank you very much for sharing. It is much better than the uninspired ideas that I have been working with: tinder clones etc <yawn>
Didn't work for me, though it does link to the wikipedia article as the first link.
Weightlifting isn't football. But if you get huge enough, your size from weightlifting predicts success in football.

Even if CS doesn't directly translate, if you can jump through the mental hoops, it likely predicts success in software engineering. You will likely do well in S/W Engineering if you have a high IQ and you have attention to detail. Since it is illegal to filter people by IQ in the USA, you have to jump through an expensive hoop to prove you have a high IQ, which also happens to vet for attention to detail and ability to focus on tasks. There is no reason that s/w engineering couldn't be taught using an apprenticeship model after doing an IQ test, but the later is illegal.
I was thinking this as well. A ledger is the CS 101 level of what is a database.

I read a headline that Japan's stock exchange is moving to use blockchain. That is also a good use but I don't know if its an ideal usage.
They do bulk purchase search results from Bing.
Tool is irrelevant, it’s very surprising you don’t have some basic CSV import, or JSON or any other data interchange format.

It’s one thing to type in a few tasks on a small project but it’s completely unrealistic to expect me to manually re type 100s of tasks.
Also, anecdotally, I went to UC Davis and have not seen any slumlord type of housing in that city. I'm sure there are other college towns with slumlords. But they also exist in any other city.
That's incredibly disappointing. :(
I think you're giving cperciva too much credit. He was just as arrogant as people thought, and he was definitely defensive.
If you are really asking this, you failed to understand the fundamental concept of DLTs.

Why would they use DLT for exchange of (promised) value rather than using banks?

Why would they use DLT for token issuance rather than the monetary policy of the fed?
Agreed. But if Bing is going to pull stuff like this, and DDG just wraps Bing results, it can leave users with questions about what else may be being censored, directly or not.
Bing, not logged in, gave me the Wikipedia entry and an article about the photographer, 30 years later.
Do You Need a Changelog?
I guess I've never needed "support" in that sense.

I almost always solve problems with the products/services we use myself — up to and including forking the vendor's codebase to fix their shit for them — because it's almost always the fastest way to do things. I've already been working with their product for a while, and I already know exactly what my own problem is. Provided I also know the language their code is written in, that translates to being able to code a patch myself, faster than I can get someone on their end to comprehend the problem I'm having.

That applies up until the point where there's a problem surface that's just plain inaccessible to me (i.e. the inside of a proprietary mobile app or SaaS service), at which point I have to reach out to tell them that it's broken / missing something on their end. (And even then, if I have a spare hour and access to the offending binary, I'll reverse-engineer it a bit to see if I can hotpatch it while waiting for them to get back to me.)

I suppose, for people who don't think this way, there can be value in "support." But IMHO there's more value in just hiring some DevOps engineers who do think that way. Then all the easy "support" requests get handled in-house, and so you'll only ever need the kind of "support" that involves direct bug reports to the engineers from the vendor who built the thing.
Presumably that means Evanston would be acceptable for you?

My point is that as in everything, there will be winners and losers. I don't think people are implying that all college towns will do as well as, say, Austin, Boston, or Berkeley. Only that places like Ann Arbor, Eugene, Pittsburgh, and Madison probably have, at the least, an opportunity to take advantage of an obvious trend.
That shouldn't be a knock against usage-based pricing per se, that's a knock against usage-based pricing that fails the predictability test (#4).

Products aimed at other parts of the enterprise (e.g. Sales, HR, Support, etc.) frequently meter on the # of seats. Since a "seat" usually maps to an employee, this has the benefit of being predictable as well as proportionate (to the overall cost of the employee).
I am so confused about the PagerDuty app whether or not it is useful for future Odown users,

As the founder of Odown which is a simple uptime monitoring service, it's very important to add all kinds of tools that can help our customers, but right now we're starting with the highest priority integrations like Slack

So if you have used an uptime monitoring service like Odown or any other app before, do you think PagerDuty should exist in any basic monitoring app?