skysight-inc/HackerNews huggingface dataset:
True, but since fstop is a ratio (length of lens over width of aperture) at this scale the more important metric in image quality is sensor size. You can compare the depth of field in a 35mm shot with a 4x5 image made at the same fstop to see the wildly different dof characteristics.
That doesn't necessarily mean it is a bad strategy. Other countries might just be delaying the deaths until they get to the point that they can't sustain the lockdowns without riots.

At that point, they could end up in a situation where they experience the same deaths and have crippled their economy for months. Sweden would look very clever under such a scenario.

We will only know what strategies worked the best with benefit of hindsight.
The idea in this post is not to use any safer strain as a vaccine, but to use it as a tool to speed up the development of other vaccines. If we can find a safer strain then we may be able to use it in a challenge trial which we can’t do with the normal dangerous strain for ethical reasons.

This is explored in more detail in my [1] reference above.
I totally see this in myself, where I get angry when something isn't easy, or something needs maintenance. If that gets channelled in building the tools to improve it, it's positive, but if you have already gotten lazy, you will just not do the work.

/edit: don't misunderstand this as calling everyone who has a housekeeper lazy - there is many good reasons for it
It started in the middle of China and the still only have 2 deaths/million vs 200/million in the US or UK. (And even if they lied and the number of deaths is ten times bigger, that is still an order of magnitude better than the US handled it.)
I believe a standard gas water heater is about 78% efficient, for a net gain of 18%.

It does generate condensate, but since my gas furnace is near by I was able to set it up to use the same drainage system.

The unit was about $2500, versus probably something like $1000 for a more "standard" power vent unit. So $1500 to make up, worst case.

It burns 100,000 BTU an hour when it runs. A gallon of propane is about 91,500 BTU. So every hour is around 1.1 gallons of propane. The unit has run for 1368 hours so far, resulting in it consuming around 1505 gallons of propane. Assuming I would have used 18% more propane for a regular heater, that would mean 271 gallons saved. Propane cost fluctuates a lot here, but if we just run with a $2.50/gallon average, then it has saved me something like $678.

There are a bunch of things I don't know though. For example, I don't know if this unit retains the heated water better than their lower/standard ones. I suspect it does given how infrequently it runs. It's design is also supposed to maintain its efficiency as it ages versus losses from a "standard" burner setup. True story or marketing shenanigans, I don't know.

I was able to take advantage of a government program at the time to get a tax incentive on the heater due to its efficiency. I don't remember the exact amount, but I'm likely about even on it now between the incentive and the recoup.

But, discarding that, I'd be about 50% recouped and have had a great hot water experience. It just never runs out, it rarely runs when there isn't an active draw, it only operates for minutes when it does run, it's LCD/metrics scratch my geek itch, and it's probably the best I can do for the environment given my constraints.
That's why you pay contractors / specialized people.

A 2-day electrical job would probably have taken me a month to complete working evenings / week-ends, assuming no other house maintenance on the side, and the job would certainly have been sub-optimal and I'd have selected overkill components. Same goes about a plumbing job, it's not rocket science, but working in tight spaces can be tricky/messy, professionals know how to do it.

As for the backend, it's easy to spin up if you know the tech, have done it a couple of times and know what to do. Given enough time, I could probably design an IoT gadget from the ground up. FPGA conception, ASIC design, then PCB integration, spin up, mechanical design, network interfacing, back & front end services. But not only the end product will certainly be over-engineered, but it will have taken me 2 years to build and I would have no idea how to sell it.

I had a family member who cashed out in the SV and then tanked his next start-up. Long story short, he's a business guy, not a tech guy. He lost 3 years on fairly simple MVP, then finally decided to pay someone, but it was too late.

I guess the morale of the story is to know ones own limits...
If it's anything like the previous generation of Pixel Buds, then the real-time translation comes with a bit of a caveat.

It's the same as using Google Translate in conversation mode, but without needing a phone to understand what the other person is saying. For two-way communication you do still need your phone though, because that will display the translation of what you just said back to the person you're speaking to.

It's still pretty cool, but it's not the futuristic technology it makes it out to be.
Maybe the major source of confusion is that our decimal representation for whole numbers is supposed to be unique. Then when we extend it to rationals and reals this property fails at rationals in the form of a/10^n.

Arguably the sign symbol ruins it for whole numbers as well, as +0 and -0 could be equally valid representations of the number 0. We just conventionally don't allow -0 as a representation. There are other number representations that don't have this problem.
> It would have been 4-5x as expensive without price controls.

There's no evidence of that.

> there was an artificial limit on the price of gasoline

Such price controls lead to shortages.

> the supply was repeatedly cut to almost zero

That never happened. There was plenty of domestic production. And there were gluts in Florida simultaneous with long lines in California. This is explainable only by allocation controls.

> Carter had announced a plan to phase out Nixon's price controls

Yet he didn't. Reagan did, as his first act, with the stroke of a pen. Reagan didn't phase it out. He just ended it. Prices didn't go up, either. None of the predicted calamities happened.

The gas crisis was a fake crisis caused by government price and allocation controls. We've never had gas lines again, despite plenty of oil shocks, such as multiple MAJOR wars in the middle east.
Crypto fund purchased over $140M worth of Ethereum in 2020
Or: if they're different, what is their difference?
I use tmux copycat paired with yank, which makes reverse searching and copy paste much easier.

https://github.com/tmux-plugins/tmux-copycat

The other change is to use vi keys for highlight mode:

# set highlight mode keys
setw -g mode-keys vi
bind Escape copy-mode
Was it ever proven to be true/fake?
This is the one I think: https://news.ycombinator.com/item?id=17115643
"You don't want to look at this, trust me"
Skincare routine steps and products- Healthy
Sharpening Critical Thinking Skills
newsblur is good too. has the option to self host at well
Wow, this is just terrible. Sites using this will now be indexed by google, but not by any other search engine, since it's encrypted with a key only google [and subscribers] can read.

I really hope AMP never gets any large scale adoption by consumers.
Anti Wrinkle Eye Cream – Best Skincare Routine
You can install the WireGuard tools only, without the kernel extensions etc, with:

apt-get install -y --no-install-recommends wireguard-tools

This is all you need with the server flavour of 20.04. For the minimal one, you need a couple more.

So no need to use a builder image
So, lets take .9, .99, .999 and so on. If a sequence of rational numbers converges, it converges to a real number. What number does .9, .99, .999, .9999 (and so on) converge to? Which is to say, is there a number that it gets closer and closer to at every step? Clearly it gets closer and closer to 1 at every step, so the sequence converges to 1.

This is one of the many (equivalent) ways the real numbers are defined to begin with, https://en.wikipedia.org/wiki/Construction_of_the_real_numbe...

There are lots of other ways to define sets with operations, but they won't be anything at all like the normal numbers you are used to.
Sometimes it’s hard to resist rehashing the same argument, even if you know you’re repeating it for the umpteenth time. Occasionally I even get new perspectives that way!
Or Laptops have just much more available space. They don't have to compromise as much for an extra port at a laptop. But an extra port at a phone changes design considerations a lot.
that just about sums it up, thanks for saving us some time.
Younger people are less likely to die as quickly from acute respiratory failure from the virus, but if the indications of various delayed and lasting effects are at all accurate, probably are, on average, losing more QALYs to the virus, and so are arguably harder, if less obviously so, hit.
Nice! Thanks for the reply, May have to give this a go.
No, we haven't had 1800 flu deaths weekly. That sounds about right for _all deaths by all causes per week_ though. Where did you get the idea that 100% of deaths this time of year is because of the flu?

Around 2k deaths is a common but serious flu, and corona has passed that, and we don't see a peak.
I can see why it feels this way, but often times it seems to me the opposite is true, like a phase transition: it remains a bunch of commits until at some point it 'suddenly' becomes a product, usable by the designated users, solving a problem, possibly generating revenue.
Like water that cools and cools and eventually turns to ice, even though that last quarter degree didn't change the temperature a lot.
But let me put it in perspective, if I wasn't wasting my time moving that button, I'd probably be watching youtube.

Is that wasted? Was it truly 3 hours lost for the OP trying to automate the light switch?

Nihilism. Do what you believe is worth it. Otherwise, don't because it's simply not worth it.
C-b [ goes into copy mode,then you can traverse the screen with arrows.

C-Space marks a region, move arrows to select text, and M-w to copy to clipboard.

q to escape copy mode
I did like that, especially the ability to take one earpiece out without worrying that it will get lost, but overall I prefer it without the wire. I've had mine for about 2 years and the wire has gotten stiff (probably through work hardening) and that makes it more uncomfortable to wear and makes it harder to fit in the carrying/charging case.
still waiting from the altavista one...
Could not agree more. I throw in underscore and backslash for good measure too:

bind-key | split-window -h
bind-key \ split-window -h
bind-key - split-window -v
bind-key _ split-window -v
Right - I also find it easier to say that really, "1" is just a different/shorthand notation for 0.(9)
It's not "two different, but equal numbers" - it's two different notations for the same number. Like how you can write same number in different ways in different bases - this is just writing the same number, in the "infinite number of decimals" vs "natural" way.
Hi Daniel,
When you first put up the idea, it seemed like your emphasis was on using the attenuated strain directly as a vaccine (and benefiting from its ability to propagate itself). This post suggests more to help test a conventional vaccine.
Could you comment on reasons for the change of approach?
There are diminishing returns in everything because we focus on high impact things first. It's not a bug, it's a feature.
It seems to be a work in progress. It might be worth sending them a bug report.
> The various state could just support people for the period of the lockdown

Isn't that just hiding the truth though? After all, what is the state, where does it get the funds? Whether you take my money today or tomorrow, you've still taken my money. I don't see any reason to believe that there will be a magical no-tax funding of government any time soon.
And some countries were better prepared, especially the places that put in plans after SARS.
I'm not OP but I can likely explain. In the late 90's Novell Netware 4 and above had a client package which replaced the Windows login with their own GINA, so users could log in to Windows client machines using their Netware credentials.
Fun fact : Zscaler which is my company's proxy, has flagged this page for "malicious content".
This is the first time a HN page is blocked by it. And currently the only one.
Happened to me last night while playing a game on boardgamearena. Funnily enough the other people on the game (who weren't with virgin) also got disconnected. Added to the general confusion. I guess the website must be using virgin media as an isp as well. I was losing anyway.
The International Obfuscated C Code Contest

https://www.ioccc.org/
With WFH (and even schooling from home if implemented well), you wouldn't have to live in expensive major cities.
Show HN: My first published game will reach 10k players this week
nostromo's comment may sound like a joke but the reason why those two things in particular are inflated is the fact that the printed money is only available as a mortgage or student loan. Nobody is buying consumer goods with the printed money and therefore we don't get to see inflation (which by definition only looks at consumer spending). We might get to see "real" inflation if that printed money is used to pay for unemployment benefits or to pay salaries.
First of all, you pay income taxes on unemployment income. The additional $600 per week as part of the CARES act is only through July 31st. Then it reverts to just the ase amount - which is whatever percentage of your income (until it reaches a capped amount) that unemployment insurance pays out, which varies by state.
Technically it’s called Force Touch on their laptops. I think they have a little more depth margin on those devices.
Social distancing estimation with uncalibrated RGB cameras
What a brilliant one-page summary of a complicated topic. Well done, a pleasure reading it. Bookmarked.
>People don't drink 3+ cups of coffee a day to be their best self living their best life. They drink that much coffee to function at all when they have no other option.

They maybe something is deeply wrong with out current system.
That’s it right there. I basically have the same thing. Worst comes to worst, Since they are visually so close, when I started, I never forgot what did what.
I'm not a mathematician, but I would guess that the Surreal numbers developed by John Conway, do contain values that start with an infinite sequence of 0.9_ but "end" with something that makes them != 1.

https://en.m.wikipedia.org/wiki/Surreal_number
Off-topic but this website is such a blatant rip-off of the AirPods Pro landing page[1] (EDIT: Discussed at the time [2]), and I _hate_ the UX. I'm not sure what device this is optimised for, but it requires a tonn of scrolling, it's janky, you end up scrolling past the info you want, it breaks basic functionality like Ctrl+F. Why not just make a video instead of a webpage, since that's clearly the effect they're going for?

[1]: https://www.apple.com/airpods-pro/

[2]: https://news.ycombinator.com/item?id=21378754
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I'm not sure why people compare these stories to folktales. These are not folktales, they are short stories Tolstoy wrote for his school for peasant children, where he also taught.

They are not meant to be read at bedtimeto small children, but thoughtful reading material for kids of all ages who are learning to read. The kids who are old enough to read the stories would be old enough to appreciate the (often very sad) stories.
It's f1.8 for the current iPhone SE model. Front camera has f2.2 though.
I actually got to hand that one to them in a positive way. I had a Pixel XL and now a Pixel 2XL, and the support is amazing for me. I've received two times a new Pixel 2XL over time (okay, not good that it broke) and that support was really good. I also have the Pixel Buds 1st gen, and there the support is also great.
I saw something about this yesterday and the stated rationale for votes was that mailman is supposed to bridge between mailing lists and forums (where votes are useful.)
If all the incoming freshmen take a gap year, then the following year there would be a double-sized freshman class. That wouldn’t work so well. And 4 years later, would the university have to admit a double-sized class again in order to keep a relatively constant number of students enrolled?
The weirdest part is that it all happened in slow motion. First China, then Iran, then Italy... No secret intelligence needed. But every single time other countries thought it wouldn't happen to them.
> I feel that the whole subject of copyright is generally anti-competitive and rent-seeking

Property rights in general are anti-competitive and support rent-seeking. That's actually very much the point of them; to insulate a particular interest from those who would compete with the person to whom the right is granted and enable the grantee to reliably extract value from the subject of the right, including by monopoly rents.
The social protections you describe are not due to Merkel (the Chemistry PhD), but were fought for and won in the 1950s-1980s.

SPD Schroeder started to destroy all protections, and CDU Merkel continued that course.

Germany is a kleptocracy for privileged groups who don't work and have their snouts in the trough, and who import more minimum wage labor to finance and maintain their live style.
Ask HN: What are the best books on Silicon Valley and the dot com boom and bust?
I'd love to read some good accounts from people who went through or studied the dot com boom and bust. Varying perspectives would be great, founders, employees, VC's, bankers, brokers etc.
I'm not convinced you're arguing in good faith, but I'll dispel the misinformation for others:

In the bay area dentists and healthcare professionals are exempt from the order. My dentist is open for emergencies 7am-7pm. If your dentist is closed, you can certainly call and complain, but it's not part of the bay area order.

I'm not sure about vaccination schedules because it's hard to google it without talk about a coronavirus vaccine, so you should contact your pediatrician about that.

Construction is also essential only, except maybe the affordable housing exemption. You can report violations on sf.gov.

Weed has legitimate medical purposes, and keeping dispensaries open is probably a combination of that and preventing a black market.

Source for most of this: sf.gov

What exactly are you talking about?
> I think this is a false equivalency. How much of the wealth is convertible to cash ?

All of it? But why would anyone convert all their wealth into cash?

> I think its 1% at best ... so bezos is worth 100 million.

What? Even if he dumped all his shares on the market, he'd net a lot more than $100 million. Sure dumping the stock would push down the share price and he wouldn't net less than $100 billion, but why would he do that? Even if he did, he'd easily net tens of billions as there is ample support from $2300 to whatever level the price eventually drops to.
North Korea already has herd immunity, zero cases :-)
Thankfully saved by tinylist[1] which is not quite as tiny as nanolist[2] but has the advantage of working and being relatively easy to tinker with for my own purposes.

[1] https://github.com/peterverraedt/tinylist
[2] https://github.com/eXeC64/nanolist
You can buy catalytic converters for wood stoves.

Also, as long as you have some draft, you can add wood without releasing much indoor smoke.
They do have more parts, but these units are basically a heat pump mounted on top of a water heater. It's more complex but not absurdly so.

There are only four manufacturers who sell hybrid heat pump / electric water heaters in the US. Other brands are rebadged.

Namely:

Rheem, AO Smith, Bradford White, and Stiebel Eltron

All four brands offer 10 year warranties.

Heat pump water heaters have very slow recovery rates compared to gas, so I would buy the largest unit you can fit. That's usually 80 gallons, but they are very tall (due to the heat pump) so it depends on the space.

UEF varies from 3.3 to 3.7, and prices range from $1700 to $2400. The lowest TCO is a Rheem unit at an estimated $3310 over 10 years (purchase price + electricity).

Rheem is currently ahead of the others on efficiency and Stiebel Eltron is probably going to be difficult to find service for in the US. The other two are middle of the pack.
Anything with a Disney logo on has Walt’s signature. I bet that book has it on some place.
I think the source of confusion is that people can't cope with recurring numbers. When someone says .999...=1 the listener assumes that the 0.999... stops at some point, and if that happens it'll always be below 1 because they can imagine adding another 9. Essentially, people actually ignore the "..." because that's the hard part.
I honestly wonder if the "5G is causing Corona" nuts will try to shoot down Space X satellites?
Well, here you reduced 1=.9999... to 1/3=0.333...
What if I don’t believe that second equation.
There's something beautiful about the fact that the video is FAR larger in size than the program that initially generated the output. Almost worth watching for that fact alone.
Procmail is what you get if Sendmail got beaten up in an APL bar.
CovidSafe is based off OpenTrace which is GPLv3. The Aus govt have to release the code. They said they would 2 weeks after the launch of the app.
I have reviewed the client side source code for OpenTrace. It doesn't store location information. Also, read the BlueTrace whitepaper, it will answer a lot of questions you might have.
The data is anonymised. You are identified by a TempId that is changed every 15 mins, that is based on your UserId and some other data (see white paper). If someone were to decrypt this value, it would reveal your UserId, but not your phone number. The attacker would need access to the server side storage to gain this information, as I believe the client side does not store this.
Is there a reason they announced this a few hours before earnings?

They look good, but I don't see it on par with the AirPods that have noise cancellation, sweat and water resistance. And given Google's inability to support their hardware products past a few years, doubt these would take off (but I hope they do).
> and diversity in politics

Agreed and I amended my comment accordingly - and thanks for pointing out my oversight!
Yes that is right. While the idea of using such a strain as a vaccine directly was the focus of my first post, this was controversial.

Even if you think it is too risky to use a natural attenuated strain as a vaccine, such as strain would be very useful as a tool to accelerate other vaccines. As I said in my first post how to use any such strain is not up to me, but if it can be used to get us to a vaccine sooner it is worth looking into.

If we are going consider doing a challenge trial we should at first make the effort to see if we can find a safer strain to use.
or,

x = 0.9999...
10x = 9.999...
10x = 9 + 0.999...
10x = 9 + x
9x = 9
x = 1

Presented slightly more clearly

https://en.wikipedia.org/wiki/0.999...#Algebraic_arguments
Not sure this helps us much. The problem is augmentation. A vaccine could take a healthy young person who would have had an asymptomatic infection, and change that into severe disease. Infecting them with an attenuated strain doesn't give enough certainty about the risk of augmentation with the real thing.

It is also a large effort to produce a medical grade attenuated strain that you could infect people with in a trial.