skysight-inc/HackerNews huggingface dataset:
Dustin from Smarter Every Day ( https://www.youtube.com/watch?v=sbEj7M3aZIg ) actually has a really solid answer to this.

The TLDR is: 3D printing can start instantly. Someone with CAD skills can have a design made, 3D printed and out for evaluation in hours. In takes days (or weeks) to get a good injection mold tooled and up and running. Then once the injection molding is going, 3d printing can switch to working on something else.

This is all about fast. fast. fast.
I write about fun/challenging/interesting things I run into w/ my personal projects.

Sharing knowledge is fun for me, so I think you'd learn a thing or two from each post. At least that's the idea!

Also supports RSS so you can subscribe.

https://blog.winricklabs.com/(02-17-2020)---efficient-data-s...
Show HN: A character editor built using A-Frame
This is a great example of why argument from analogy is a fallacy. The fact that you can buy domains and they might go up in value is almost the only similarity they have to stocks, and certainly isn't a justification for letting people trade them like stocks.

When you purchase stock at an IPO, you're providing value because you're giving a company funds which they can use to build their business. Later buyers of the stock are providing value because they're incentivizing the buyer at IPO. All further purchases of the stock flow out of that.

When you purchase a domain, you're taking a valuable, limited resource, and paying, typically, a pittance for it. You're not providing value, period, at all. Ostensibly the reason we let people do this is that they will use the domain to provide value in the form of a website that people use.

So stock buyers are providing value to the market, while domain squatters are actively removing value from the market.
> the best senior developers are the ones who know they can google the answer to trivia so they don't need to remember it.

I've +20 years developing professionally. I remember the stuff I use day to day, and know how to navigate the docs of the technologies I use frequently for the less used tidbits. Being a good Senior isnt about knowing the answers to everything, but knowing how to find the answers quickly. Also, how to ask the right questions.

I don't know is always an acceptable answer, but should be followed up with "I'll get back to you in an hour or two.", or something to that effect (obviously for some problems, may need to experiment/prototype).
The AGPTek Rocker is one of our last targets still in production and can be acquired for around $50. I haven't used one myself, but from what I hear it's fairly decent but not perfect.
Why?

Will AirBnB taking a loan automatically shut down the NIMBYs that block construction projects in SF?

Will it prevent shadows from falling on parks and historic laundromats from being preserved?
But economies reliant on travel will be itching to declare "everything is well, come visit us!". Probably visitors will be wary, especially if they consider whether they'd want to be sick in their destination country.
> usually made by culturally narrow-minded Western developers.

Usually made by developers who realize this will suit 99% of their users. I'm culturally eastern myself and realize this.
Load times might not effect conversion linearly. People deal with 3 second loads until one day a competitor does .3 second loads and gives a better experience, then in a matter of months you lose your customer base.
Went to college with this guy, great to see him kicking ass on the front page of HN!
Drones in Africa: How they could become lifesavers
I am not sure about the funding level but the Google internal tooling for build/code review/search are the best I have seen.
No, but you could redirect your root requests to example.com/home and serve from there with relevant cookies restricted to the /home path.
My twitter bot, @fiveobot[0], lives on, within a `screen` session on my VPS. Its time zone and geographical data are both at least 2years out of date, but I'd have to adapt new tools, or hook into APIs that will eventually fail to access up-to-date data. I made it for an audience of one, and I'm still amused by it, today.

[0] https://github.com/jachee/fiveobot
These corporations be forced to raise capital by selling the shares they bought back.
Some economists studied this[1] and found that even if you assume incredibly expensive drones and a rather small, spread-out city (Chattanooga TN), drones are signifacantly cheaper than delivery trucks. This is true even if delivery trucks cost $0 to purchase. Most of the cost of delivery is labor & maintenance, not upfront capital costs.

The main reason we don't have drones deliver things is because the FAA bans it. No state or municipality can override the FAA, so we're all stuck until the feds change the law.

1. https://libjournals.mtsu.edu/index.php/jfee/article/download...
I know, I know. I was misinterpreting your story for comedic effect. :P
Unfortunately VCs were much less interested in funding R&D of rolling autonomous robots in the past few years, so they aren't going to happen all of a sudden when the world actually needs them.

I do agree though that they make a lot more sense than drones, for several reasons: (a) power consumption / mileage per charge (b) carrying capacity (c) safety in populated areas (d) privacy when flying by buildings (e) lack of suitable landing areas in urban centers (f) noise in residential areas.

Source: I am the co-founder of one and aware of internals of several others
Shoving a bunch of people in a small space for multiple hours to go to other crowded spaces with people from all over the world and then returning home with a bunch of other people in a crowded tube...
Would love to read more details how the integration and management works within these organisation.
Thanks; that is a good question. In our laboratory, we have a ratio of 10:1 for PCR to qPCR instruments. In the new laboratory that we are constructing, the ratio is 50:1. It was similar at Stanford academic laboratories during my PhD. Standard PCR instruments are inexpensive and very common. qPCR instruments are definitely not as common, as they are very specialized instruments for a few use-cases.

Most clinical laboratories would have 10 to 50 PCR instruments that they can use to run the initial amplification reaction in parallel before Sanger sequencing. Also, Sanger sequencing uses a plate feeder, so you can add new plates on top as the second round of PCR reactions finish.

But, more importantly, the qSanger can by-pass RNA extraction, which seems to be an important bottleneck in the RT-qPCR workflow.
>"Airbnb Inc. agreed to pay its new investors interest at a rate of more than 10% and to strengthen its leadership, in return for the $1 billion in additional funding announced Monday, according to people familiar with the matter."

Can anyone shed some like on exactly what is is meant by AirBnB agreeing to "strengthen its leadership"? Does this mean make changes to its' board?
https://www.airbnb.com/help/article/43/what-happens-if-my-gu...

> Guests who cancel are automatically refunded according to YOUR cancellation policy—unless the cancellation qualifies as an extenuating circumstance or falls under our Guest Refund Policy.

Exactly. And they were not legally allowed to do that. Which is why they are reimbursing hosts. They were flooded with cancellations and did right by the renter, but wanted the host to take the hit, when in reality the broker (AirBnb) is liable.
I still miss Aurora Feint from the dawn of iOS.
I've done this recently - follow the vultr guide https://www.vultr.com/docs/how-to-install-jitsi-meet-on-ubun... then the jitsi docs to secure your meetings as required https://github.com/jitsi/jicofo#secure-domain . Then you can use basic Auth in nginx https://docs.nginx.com/nginx/admin-guide/security-controls/c... to secure the site.
Ahh that’s true. I stand corrected.

I incorrectly assumed that the largest sports stadium since that time would be around today.

I also did not consider race tracks which do cross that bound.
> Wearing cloth masks resulted in significantly higher rates of infection, the authors found. They also noted that in their test, the cloth masks were only 3 percent effective at blocking particles.

Hoo boy that's misleading by itself. The control group was "use what you normally use", and had the following numbers:

> In the control arm, 170/458 (37%) used medical masks, 38/458 (8%) used cloth masks, and 245/458 (53%) used a combination of both medical and cloth masks during the study period.

Given those numbers, it's basically impossible to use this data to tell us anything about the efficacy of cloth mask vs. no mask. The control group did wear their masks less often, but it's still very unhelpful data.
There are a hardcore group of developers that love functional languages. Whenever I look it just looks pointlessly complicated.

Maybe its because I'm not smart enough? Given that 99% of software is not written in these languages perhaps you have to have a special gene to figure this stuff out. Or maybe its just people trying to be different or trying out things on the fringe.

I'm not sure what the answer is or if I should try harder.
Yes, particularly those with "strict" policy which was originally no refund, then Airbnb degraded it to 50% refund if cancelled before 14 days, then degraded to 100% refund if the guest had an "extenuating circumstance", then a full refund when virus-related things were added to the ECs.
By headband I mean the part that you are 3d printing. Both designs still need an elastic strap.
What of the employees?

Five days ago the Financial Times reported on Airbnb lowering its internal valuation from $31 billion to $26 billion.

They also mentioned the delay of any IPO and said this:

>The push to go public was motivated, in part, by expiring stock options held by staff.

What happens to the employees in this situation?
"Don't work in IS&T" has been the common wisdom in Blind for years now. Interesting how long it takes for the media to pick up stories like this.
Not really, since it only returns a small section of the queried article.
It’s hard to tell some of the RISCs apart ;)
Our technique would still be affected by shortages in specimen collection (like swabs).

Purely speculative, but I think if swabs remain an issue for too long, alternatives could start coming online, such as even using qtips + saline (no idea if it works, it's just an example). The current swab + Universal / Viral Transport Medium combo is optimized for flexibility; it is designed to work across a very broad range of viruses and bacteria that have different viral loads and shedding characteristics. The current pandemic is pretty much COVID-19 only, so I think it's a priori feasible that a specimen collection procedure can be found that uses common materials. We did try early on to see if saline or other buffers affected the performance of the assay, and it worked fine in those conditions.

We use fairly standard chemicals. I haven't heard from our suppliers about shortages for the chemicals we use. Chemicals and enzymes tend to be relatively fast to scale up for bulk manufacturing.

There's always manufacturing risk that a product will not work as expected. In fact, the first COVID-19 test developed by the CDC did not work as expected, and this delayed testing by several weeks. We de-risk this as much as possible by performing experiments as early as possible, akin to the fail fast mentality of checking for the highest risk failure modes first. Since we don't have a national healthcare system in the US, the manufacturer takes on the vast majority of the risk of a defective product.
Similar things were done by generating a live video. Heck, you could just show the page for the video in the live video.

The problem would be in keeping the transmission live for a long time.
And when you’re not home?
> Google suggests Marriot has 176,000 employees, and Hilton 169,000. So AirBnB is massively smaller, still.

Marriot et al employ hotel staff, cleaners, chefs, restaurant staff, bar staff... people to run a hospitality business.
I've still got Geometry Wars on my 32-bit iPad. It's my go-to airplane game—if there's a 120v outlet to plug into.

No multiplayer, though.
I live in a pretty well established suburb. The first year I moved to my house, I had zero problems with Amazon deliveries, usually from FedEx. Somewhere along the way, they switched to their own drivers, and I started getting deliveries for a guy with a somewhat similar name +10 streets away (like 44th St. instead of 54th St.).

Over the span of about six months, some stuff I got included an electric lawnmower left right in front of my door, motorcycle helmet, cooking appliances, and a foot massager. Every time I called, I begged Amazon to fix this. After the third delivery, I threw my hands up and stopped calling. I figure the recipient calling to complain about missing packages was more effective than me calling to ask them to stop sending me stuff. There were a couple of more deliveries after that before they got the hint.
Using (misleading) statistics/charts/graph to lie to people is an age old tradition. I dont think their usage indicates much about critical thinking unless viewers are viewing the charts critically
I think this study jumps to many unsubstantiated conclusions in their estimates.

> We assume that operating costs for personnel, loading, and monitoring will be approximately the same per package for truck as for drone delivery.

but at least they included

> There are additional drone costs such as: setting-up and running the drone delivery stations, the investment in research and development, and lobbying the FAA. Other costs include: buildings and land associated with the drone stations, computers and monitoring software systems for drone flights, computer technicians and drone monitors on site, robotics engineers for maintenance and upgrades to drones on site, utility costs of running the building, logistics management team to oversee operations, potential insurance and legal fees associated with drones, and potential air and/or radio frequency rights for drones, etc. There is also the potential for legal costs in some of the following situations: drones are found operating in unauthorized airspace, drones are shot down by civilians, a drone lands in an unauthorized space, etc

There's also mention that the drones can only deliver up to 5lb packages.
Some people just don't know how to run an interview
You could also view it as the West offshoring its knowledge (if foreign students don't stay afterward, and/or the reduction in locals' abilities causes local economic stagnation).
That was discussed here: https://news.ycombinator.com/item?id=22808414.

Don't miss the off-topic collapsed subthread, if you like that kind of thing.
I've worked with SIP and H323 but not WebRTC so I knew about STUN/TURN/ICE, but you're right about the acronym-soup, even to those who have networking experience --- VoIP is its own little niche. (Along the same lines, I've been a bystander to a group of GSM developers' meetings and it's just as incomprehensible.)
Does Radar belongs to IS&T?

And I wonder if this IS&T power grabbing and politics happen and grow within the past 10 years. i.e Happen under Tim Cook's watch.

It surely doesn't seems very Steve Jobs approach.
If they patch their code, they still have to get people to update. I know companies still running Windows XP. If you think people outside of the tech industry update their systems regularly, you're in for a rude awakening. My uncle's company still runs a DOS app written in 1984.
So you don't actually have a plan. You just want to keep going down the same status quo which is what allows people like Alex Jones and what not to spread conspiracies which have directly resulted in harm to people.
I think a summary of it is that some things are broken by design in a large org.

If you've worked in a huge org like Apple or the government, you've seen incredible inefficiencies. How can all these smart and often well-paid people be doing something so wrong (i.e. wasting time with political battles, etc.)?

But that's only true if you look at the "medium view" of the organization. If you look at the large view, how the money actually flows, then it might be beneficial for one part like IS&T to be kind of broken, as long as the rest of the company works.

I have seen this dynamic at other companies. Internal tools can sometimes hold too much leverage over the organization. They can almost "blackmail" people into getting their way because they have a literal monopoly over what they do. It might be better to let multiple teams fight battles amongst themselves, which seems inefficient if you're working as a regular joe, but could be efficient from the CEO's perspective.

----

Edit: A related idea is the principal-agent problem:

https://en.wikipedia.org/wiki/Principal%E2%80%93agent_proble...

e.g. if you've worked at any large org, you know that not everyone acts in the company's interest (nor should they strictly speaking). A trivial example of this is putting extravagant meals and vacations on the company's card. (Although the nontrivial instances of this go all the way up to fraud/embezzlement.)

A less trivial example is making up fake engineering work that sounds good when review time comes, but doesn't actually advance the company's business.

So some things that seems mystifying on the ground level are pretty much a defense against this inherent conflict of interest.

In an adjacent domain, a lot of HR is a defense against employees acting in their own interest. (I see a lot of veterans on here saying: "remember HR doesn't exist for you", which is presumably a hard won experience.)
In which case they aren't worried about security, so why does buying corp.com matter?
Not sure what languages you are referring to with the 99% comment, but declarative programming is extremely well established, and it marries well with functional programming. See: SQL, Excel, regular expressions, HTML. Functional programming is a subset of declarative programming, and there are a wealth of useful applications.
Every little bit helps, and being able to desk-produce these means that you can make an impact directly and quickly. My parents are both still treating patients, and I was able to print 25+ masks for their practice.

While we're waiting for mass production to step up, these local productions make a difference now.
The reason why you cannot ever compete with kdb+/q is because the database and language run in one address space. Your benchmark gets around this problem by using the built in sum() function, but kdb+/q can just execute arbitrary code and never suffer a performance penalty. Unless you plan on integrated a high performance programming language into your DB, it simply will not be possible to ever meaningfully compete on the effective total time of complex queries.

I, of course, am not disparaging your work, the performance numbers are very impressive!
Disturbing Snapchat-Snap Map Horror Stories (Vol.231)
Start by choosing a definite objective. Something obvious and unavoidably precise. Do you want to help more people, or the same people more? If the former, set a new users objective. If the latter, set a lifetime customer value objective. How will you measure success? Good objectives include both quantity and quality metrics.

Choosing a meaningful and definite objective is the second hardest part of marketing.

The hardest part is talking to customers.

You'd like to buy some more customers, right? So do some research. What kind of customers do you want? How much are you willing to pay? Where can you get a great deal on them right now?

Many business owners spent more time researching lunch options last year than customers. Why?

What's the most obvious way to get more or better customers? Spend 45 minutes writing down every idea you can think of. Every single idea. You'll get through the fluff after about 25-30 minutes.

Then find the options that use your existing strengths, preferably in a non-obvious to your competitors way, and turn them into a story.

That's your strategy.

Do those things and see if they get you closer to your objective. And move fast.

Try big things, don't tolerate slow learning, and remember that you learn from reflecting on experience, not thinking about tools and techniques.

Let me know how it goes!
> Whenever I look it just looks pointlessly complicated.

Quite the opposite on my experience. The fact that something is familiar doesn't mean it is free of complications.
If you're serious, feel free to email me (justin@postgresql.org) to make it happen. :)

Out of curiosity, what kind of things do you think people would use it for? Linux doesn't boot on it.
Wow! Who pays 10% for money in bulk today? Companies in desperate trouble.
I still think it's a miracle that the browser was the solution to the client-server problem x-windows was trying to solve all along.

How we ended up with billions of people able to interact with an app that we can all build at home seems insane...
Study SICP
Those countries would just block adtac.in recursively when they noticed.

And if you decide to work around that by setting up more domains to do this, then you could just as well use those domains to front regular proxy servers.
Just an anecdote, but I spent the past 2 years in Canada / US, and never got sunburnt. Rarely, if ever, applied any sunscreen. Spent plenty of time outdoors.

I came back to Australia in March (Melbourne) and on the first day, sat outside for lunch, 1-2 hours tops, got visibly burnt on the forehead.

It’s not summer either, that’s just what it’s like in the sun.

In Australia that seems normal, we have to leave to realise it’s insane. As for the rest of the world, you should come and see if you like it.
> UPS is doing it so cheaply there's no way they're even close to breaking even on it

That doesn't make sense to me... why would UPS sign a contract with Amazon that it wouldn't make money on?

I can see accepting a relatively low profit, but not negative. Even as some kind of strategic defensive move. There's no winning scenario for them to lose money on delivering packages for Amazon.
It does prevent other people from buying the stock. Stock is issued in finite amounts.
This is pretty nice - along with the hardships of the #covid19 era, some organizations and people are showing the best of humanity. There are several other companies and individuals offering free training/IT/mentorship services in one form or another - kudos to them.
Investor must be claiming fraud or gross negligence.
A Discord Server for Programmers
I wish Jony Ive still narrate all the Apple video. Without his voice everything seems boring. I want that "Aluminium"
Those residents just can't be self-reporting.
Also, I prefer my packages delivered to my door on the porch, not the middle of the yard.
It made me nostalgic, my (static) webpage was like/~that in 1995 or so.
“We Need to Solve This”: Colombia’s Race to Build a $1k Ventilator
What is Docker's business model these days?
They're saying that Amazon isn't close to breaking even on their delivery service because UPS was doing it so cheaply.
> The best thing the government could do is provide the same service for free.

Check to see if your local library offers Consumer Reports access! Mine does, and since the library is part of the municipal government, I suppose you could say that your statement has already come true (at least for some people).
>This. Universities and online challenges provide clean labeled data, and score on model performance.

First homework assignment in the stats class I teach is to clean data that the class generated with directions they all perceived as clear. It's near about the most hated assignment I have ever given. Amazing how many ways there are to encode gender of a experimental participant.

Male, M, m, male, Man, ...
Silicon Valley Bank only started processing stimulus loan applications today
Do these tests have an advantage in specificity and sensitivity, especially if doing test pooling?