skysight-inc/HackerNews huggingface dataset:
Ammonia? WOW! As at

https://en.wikipedia.org/wiki/Ammonia#Combustion

4 NH3 + 3 O2 → 2 N2 + 6 H2O

The stuff is darned dangerous, quite challenging to handle, highly regulated due to the dangers, with lots of potential for toxicity, and likely close to ammonium nitrate, one heck of an explosive, etc., but a little arithmetic might show some astounding energy per gallon.

If it has a lot of potential, then I'd wonder why it has not been used in military piston/jet engines.

I would guess that a little too much O2 would give off nitric acid, etc.
We have seen this exact scenario in the US with corn-based ethanol for vehicle fuel.
You are missing the point. This is a long run game, since we can easily transition from fossil fuels to alternate energy source without having to replace fundamentally how EV engines work. All they need is electrons, not exploding fossil fuel. These electrons can come from any source. If it's fossil today it doesn't matter. 20, 50. 100 years from now the source of energy can shift significantly while the transportation industry just wouldn't care anymore.
The Complete List of Mobile (iOS and Android) Conferences in 2019
IIRC there was a study posted to Hackernews about a week ago that showed that humans really prefer competent coworkers over nice ones.
Bazel can also pull in Maven dependencies if someone is a masochist enough to need that.

>> Bazel has a steep enough learning curve

I'd argue for basic tasks it has far less of a learning curve than e.g. Gradle or, god forbid, something like CMake.
Leaving Apple and Google: a /e/ mobile ecosystem comprehensive description
no idea :) I think it's a vision, so it's assuming we get to a point where batteries are better than today's.
Yes, they absolutely are.

The RMB is a fictitious currency because a) the central bank is politically controlled b) there are currency controls c) lending is driven by the state and d) it's opaque.

The Chinese government has magical monetary policy powers, they can do anything.

The US has a fair bit of transparency, no political control and no capital controls. That adds up to a fairly 'fair market value' for USD. They can get away with shenanigans, but not remotely like China.

The Euro is the strongest of the big currencies, mostly by virtue of the fact many countries share a currency, and they are all afraid the other would print money and play games ... so in effect you get super strict rules.

Euros are backed by assets according to rules. There's some sneakyness, but it's all papered over with rules.

The USD is backed by the US gov, and since 2007 a lot of real estate. Also, because it's a seigneurage currency, it's kind of backed by the fact everyone around the world uses it.

The RMB is just whatever the party wants it to be worth.

China wants everyone to respect the RMB, they want to make more international transactions etc. but for that the rest of the world needs to see it's reliable. But in order for that, China has to play by a set of rules and not play harry potter with money. But they want to keep the magic wand (it's rational for them to want that power), so they will have a hard time making RMB go much further than their immediate periphery. Nobody wants to hold RMB.
Your source goes to 2017, and considering Germany has been fast tracking their renewables effort, a jump of 10% isn't inconceivable.
ICE cars are around 15% efficient. Electric cars are generally 85% to 90% efficient. "50% more" is a pretty big understatement. 1.5x * 15 is only 22.5% efficient still around 1/4th as efficient as an electric car.

Also given solar's growth and the time it will take for most cars to be electric there's plenty of room for more solar production. California now requires solar on all new homes, and it's getting ever more price effective to use renewables. Seems like I see a few stories a week about a coal, NG, or similar peaker plant being cancelled, or decomissioned in favor of battery storage, solar, or both... for purely economic reasons.

A 75kw battery in a tesla gives you a range of 310 miles or so. So that's 4 miles or so per kw. So if I install the smallest Tesla solar system (4kw for $8,000) and being in central California I get a fair bit of sun. Should easily make 15-20kwh in the winter, and a fair bit more in the summer. That's 80 ish miles a day in the winter, and more in the summer. I drive about 30 miles a day on average.

So with a 8kw solar system I'd likely handle my driving needs and put a big dent in my other power needs. Tesla's new solar pricing puts it around $2.00 a watt installed. $16,000 isn't cheap, but our power bill isn't cheap either, especially in the summer.

As a nice bonus solar panels noticeably decrease the heat load in the attic, saving airconditioning costs. Amusingly solar panels over parking lots (so they provide shade) actually save a fair amount of gas. The huge win is when everyone runs their AC flat out for 15 minutes when they get into their 130F cars, if their car is closer to ambient they spend much less gas on the AC.

While solar does contribute to the "duck" shaped power production curve, cars typically spend the vast majority of their time parked, and can be programmed to use power whenever there is a surplus/whenever the price is lowest. So while electric cars can consume large amounts of power, they generally aren't picky on when they get it. At least for home users they typically schedule charging for whatever time the cheapest rates start.
Your last paragraph is key.

Even if EVs do double electricity demand, its mainly going to be off peak, and you've got 8+ hours you can spread the charging over.
Maybe not a great match to solar, but a good match for wind.
Amazon’s facial-recognition technology is supercharging local police
I doubt that people posting these images are trying to be unique, they are chasing status.
It's misleading and very far from the truth though.
> Also, you can't price shop when you're having a stroke.

And you can't consent to anything when you're having a stroke, or in a car crash, or having surgery, etc. You're hit with thousands of dollars of bills when you're unconscious or not mentally competent, and it can stick with you for years.

Price shopping to keep costs down - yes, fine, it's a nice little component that would probably help a portion of our medical ecosystem. If I can save $14 on some particular medication by choice of pharmacy - sure, why not?

I've maintained for years - either single payer, and/or have insurance go to a primarily individual/family policies that people purchase themselves - get the employers out of my business. People are tied to jobs due to insurance concerns - employer-provided health insurance contributes to labor immobility. Employers have less incentive to hire less healthy people, likely keeping some people from improving their lives.

Remove 'tax deduction' for employers to provide health insurance. Ensure all taxpayers can fully deduct 'health insurance' costs from taxable income, starting from $0 (none of this 7% of MAGI bullshit). OR... increase it? 150% of your premium is deductible in year 1. 130% year 2. 115% year 3. 110% year 4. 100% year 5. Incentivize people to actually own this.

We had 18 months of "let insurance companies sell across state lines" BS during our last election. It's already possible between many states - it's simply far too much regulatory burden to deal with for most companies, that's why most aren't doing anything about it, even when they can.

REAL reform would be changing who actually pays for it - let them become the real 'consumer/customer'. An employers' incentives and mine don't always align, and if they're paying the bill...
That's what I was thinking! These are pretty basic.
Escape Expressions and Fluid Variables? Call by need? Looks like I'll have to read it.
To become a bank you need an account at the central bank. Getting a banking license is difficult. And even after you get it, central bank can freeze your assets any time.
Find me a loosely regulated market where prices fluctuate on the same order magnitude as they do in medical.

Gouging related to temporary situations is a laughable comparison.
The "temple" where filming is done is a secondary reservoir, it only receives water after the primary detention silos are full. So there is plenty of warning.
One of the best things I ever did was stop caring what others think and become more disagreeable. It's sort of ironic that people didn't like the agreeable me (I assume too boring) but I'm far more liked as a disagreeable person. I may also be that I come across more honest when I tell people "no", or I contribute what my actual opinion is instead of whatever is easy.
"People will get exactly what they deserve". What have children born today done to "deserve" the devastating consequences that are going to unfold? Your view is fascinatingly self-centered and ruthless.
The things we do to ship desktop software e
>So in practice, the financial benefits seem to accrue with low-care patients, not low-cost-of-service patients, meaning it doesn't affect the system in the right way.

Why is "use less, pay less" a bad thing?
three new valve IPs slated for release later this year
> 1) billions of users' behavior disagree

Facebook is engineered to be addictive and to keep people engaged and present on the platform so they can be exploited for data.

If you are going to say Facebook provides these people value then I'm going to say a heroin distributor and his chemist provides a similar value to his customers.

> 2) this is so vague and subjective that it's meaningless, what does it mean? Better off, how? By whose standards?

Of course it's subjective, it's an opinion. One shared by a growing number of people.

> 3) if the above were true, why would FB be obligated to explain it?

They're not. Neither are people obliged to use their platform or abide by their terms of service if the company doesn't want to be forthcoming with explanations for its conduct.
I'm not surprised the German numbers are better. But even there, with Germany's remarkable progress, a Tesla bought today will be scrapped before Germany reaches 120% of today's electrical production in renewables.

Fair enough; I should have used 25% instead of 50%. In my head I was multiplying by the energy efficiency of electrical production but that of course is not relevant to this calculation. The irony of correcting a bad argument with a bad argument while complaining about the same is not lost on me. I believe my point stands.
Nasa Says Metals Fraud Caused $700M Satellite Failure
It's engineered to be addictive in order to keep people on the platform handing over data.

Facebook has employees whose entire job is to make this service addictive and to keep people posting.

In that sense, the 'value' is hard to differentiate from a dopamine-driven compulsion to continue posting and hitting 'like'.
I'm 30. Am I still young enough? (I guess the answer is: for some things, not for others and never stop making progress)

P.S.: Anyone looking for a (senior) IT product manager and working on something slightly altruistic, scientific and interesting?

Preferred topics: News, News Aggregation, Knowledge Management, anything from Data over NLP to Deep Learning (ethically though please), generally Scientific Topics.
DJI’s private keys on GitHub lands Chinese developer in jail
Export control has huge downsides and I agree with the general sentiment that the US overdoes it. However, logistics and navigation have obvious military applications. A state-of-the-art GPS receiver can slot straight into a missile.
You mean Linux ISOs.
Exercise Affects Our Memory
I think I need the expert guide.
Free ATMs vanishing at “alarming rate”
Cross Compiling to the Atari ST
Thanks for the feedback. That’s insightful!

In software, I’ve always preferred the more serious tone. No idea why; I love silliness and monkeying around in general.
Keep in mind that 600TWh/year is likely a capacity of at least double that. But the peak rate is only under worst case scenarios like a sustained heat waves. Unfortunately that high peak capacity is very expensive and goes unused for the majority of the year.

Electric cars consume quite a bit of power, but the longer range cars like the Audi, Jaguar, Tesla, top of the line leaf, and bolt all have a 200 mile or so range. So under normal use (somewhere around 12,000 miles a year) they don't need charged every day.

So generally cars can charge off peak, but in times of dire need I can see only allowing cars to charge when there's a surplus of power... strangely enough these surpluses are becoming common because of solar. Sometimes utilities even have to pay to get rid of the power.
>This includes things like, how do you use an external library?

Are you using Linux or Windows? If Windows & MS Visual Studio, Yan Cherinokov (programmer at EA) made some helpful videos about how to create libraries and link them:

https://www.youtube.com/user/TheChernoProject/search?query=l...

I recommend his C++ tutorials over other ones because he often deliberately does the wrong thing to show you what the error messages look like. This teaches you how to troubleshoot your own C++ projects when you encounter the same errors.

Lots of tutorials only show the correct way but it's also important to demonstrate the common ways that beginners do it incorrectly. This teaches people how to dissect the error codes.
Will AI enhance or hack humanity?
Wordpress Dev Monthly Recap April
How to use Open Source to help your career take off
The critisized article uses 550g/kWh for the German grid mix, but in 2018 it already was down to about 480g/kWh and is on track to be lower in 2019 as reneweables are expanded. So that number is quite off already.

H.W. Sinn has made a range of presentations (you can find them on youtube if you understand German) where he tries to show how reneweables are infeasible. Also there, he has the pattern to use slightly out of date numbers as basis of his calculations. I actually have met C. Buchal at university, but that is quite some time ago. He is a really nice guy and as a physicist he should have spotted the shortcomings of this publication. But from what I have read, he is working on synthetic fuels, so that might explain the angle.
Yes, but really is it any different to what every build system does by inventing its own DSL or making a new DSL in some other language?

Ant did it in XML, Premake uses Lua, CMake has its own, etc
So Wikipedia with better UI and a sprinkle of AI "magic"?
How direct-to-consumer brands see the purpose of stores
It´s called genre.
The link in the description has a nice free PDF version too:

http://www.engineerguy.com/faraday/
Island nation of Kiribati is disappearing into the sea
Since the electricity produced in the EU is a part of the Emissions Trading System (EU ETS), one could argue that any electricity used will have no impact at all on the CO2 emissions. The reason is that in the ETS, there are a fixed amount of emission allowances. So if a coal power plant produces extra electricity, someone else will decide to emit less CO2.
For the most part, yes.

There are specific CUDA operations which are not guaranteed to be reproducible though, as well as some CuDNN operations which are non-determanistic without performance sacrifice, and this does cause real problems.

See https://pytorch.org/docs/stable/notes/randomness.html for some reasonable docs on this.
If this is considered "intermediate," then for more advanced Vim tips I recommend http://vimcasts.org/episodes/
Amazon Announces General Availability of Its Managed Blockchain
Petition – Please Release MVS/XA and VM/XA to the Mainframe Enthusiast Community
Search the forum.

If I remember correctly it’s about validation and scalability. I don’t believe they ever gave a good reason not to.
Gas car efficiencies are in the 30% range. Toyota got as high as 38%, there are large volume ICEs on the road with 35% efficiency.

Even at those numbers, electric is better. There's no need to use old data.
Writing Goals on Medium – Expectations and Perseverance
Citizens of disappearing Kiribati consider relocating to man-made island
They won't even investigate if you've lost something now. I had my shed recently broken into, and multiple tools stolen.

Their response was "This isn't an emergency. We don't have the resources to follow this up. I hope you have home insurance".
I might simplify my Webpack builds with it.
Transcript of Mark Zuckerberg and Yuval Noah Harari Podcast (April 26, 2019) [pdf]
There’s also been high profile cases where rape trials have collapsed because of evidence from phones which hasn’t been disclosed to the defence, for example the case of Liam Allan [1].

1: https://www.independent.co.uk/news/uk/crime/rape-trial-colla...
Not really. Usually the politics goes the other way - people getting an author slot because they are the head of the department or something.
Listen here: https://podcasts.apple.com/us/podcast/tech-society-with-mark...
"However, being fat doesn't mean you're stupid or lazy. "

As a fat person you

a) may not care about conventions.

b) you have little self control

c) you may be impulsive in things

I don't have any friend who is seriously overweight and successful. But I know a shitload of people the other way around. I just tried recently to do business with a seriously overweight person and, feel free to blame me, would never do that again.

So congrats for losing weight.
What you really want to know is what the marginal carbon intensity is. In other words, if I add demand now, what form of generation will supply that additional demand? This is somewhat different from what the current mean carbon intensity is.
I accept you are correct about the paramountcy principle. I have read about the case in the last hour, and realize I was wrong to equate it with murder.

The details make me uncomfortable (with the court decision), he had an offer from a qualified intuition for help.

Thank you.
Yes, I completely fucked up the math. Muphry's Law. But my point still stands; you aren't powering that EV with renewables until the grid goes over 100% of today's production. The fact that you "can" doesn't mean you are.
> Work to solve problems that aren’t popular. Popularity of a problem is evidence that it is hard to solve, competition is high, and your individual contribution is likely to be small.

I think this is a relevant advice for us - wannabe millionaires. Or at least for me. Do not be a copycat. Look deeper for a good enough problems. Don't focus on what is hot.

It may not be an advise to surely become the next billionaire, but millionaire may be fine.
>Can anybody suggest any real intermediate vi material?

http://vimcasts.org/episodes/
As AI Moves into Medicine, the Human Touch Could Be a Casualty
China Luxury Report 2019 (McKinsey and Co.)
Not the Usual Article About Getting Out of Your Own Head
instead of "52gg" I prefer ":52"
EDIT: There was a trial, I regret simplifying this down to murder.
If only I wasn't so boring; some interesting retail spaces have opened up in my area.
Reminds me of what Sergey Zimov has been trying to do in Siberia with his "Pleistocene park" [0], which afaik ties into attempts to bring back the woolly mammoth to act as the megafauna [1]

[0] https://www.lonelyplanet.com/news/2017/03/23/ice-age-ecosyst...

[1] https://gizmodo.com/scientists-could-soon-resurrect-the-wool...
Yes exactly, or natural gas plants, but same thing. Electricity is a universal interface. EVs free up their upstream to change at whim.

That freedom means that greening of the power supply can be solved at a societal, rather than personal level.
Scientists traced a uranium cube to Nazi Germany’s nuclear reactor program
The Psychological Tricks of Airport Design
> Noel Brown was the director of the UN Environmental Program in North America.

He was the head of the New York Office. I'm not sure those two things are synonyms.
In Germany, far more reneweable power is added to the grid as the consumption could increase. With about 44 million cars on the road, every year 3 million new cars are sold, so it would take 15 years to add that extra 10-15% of electricity consumption to the grid.

Whether the grid reaches 100% reneweable during the lifetime of an electric car bought today or not might not be clear, but the point being was, it is guaranteed to contain way more reneweables as of today and with that the base of the calculations was wrong.
Yes, this is true. It's not a huge factor. Keep in mind that the worst 1% of the days of the year are a serious strain on the electrical grid. They often require very inefficient and expensive peak plants to spin up to help ensure the grid doesn't fail. Not only are those peaker plants inefficient when running, they are quite expensive even when not running.

Additionally even on those top 1% days (3.5 days a year) there's likely only a few hours where the load is near max.

So if say 1M (2% or so of all cars) cars in a country like Germany would contribute say 25% of their capacity just 3-4 days a year it could make a significant difference and make the power grid more reliable and allow the least efficient peaker plants to be decommissioned.

Even over a decade of use, electric car owners aren't going to notice 25% of their battery being used 3-4 times a year.
The state of mobile apps in 2019 [pdf]
Could Air-Conditioning Fix Climate Change?
Wow, that's a neat little list. The impact of this on the start-up scene will be considerable. Given that almost every AI development is dual use it will be hard to make a clear ruling on what is and what is not 'national security' related.

I remember when crypto was export restricted and how that ended, this will likely go the exact same way.
in my 40+ years of living in english speaking countries and sending thousand of pieces of postal mail over that time, i've never heard the phrase 'postal cover'. 'postal' is the only clue that indicates it's ... to do with 'postal' stuff.
To Make Real Money, the Podcast Industry Needs to Stop Calling Them Podcasts
The Attention Is All You Need paper is where Transforms were introduced:

We propose a new simple network architecture, the Transformer, based solely on attention mechanisms, dispensing with recurrence and convolutions entirely.
We can always vote and legislate for something better

Aren't you assuming that people want something better? I don't know if that is true. Many people refuse to believe cops can be bad (due to ignorance or whatever other reasons)
I don't get it, in what scenario would someone pay $99 per user per month?

Could someone please give an example where this makes sense?
No, the number is the actual electricity produced. You can see the numbers here: https://www.energy-charts.de/ren_share_de.htm
The average of reneweable energy in Germany for 2019 so far is 46.5%, it was slightly over 40% in 2018.
Vanguard Patented a Way to Avoid Taxes on Mutual Funds
Apple at WWDC 2019 Preview: New iPads, MacBooks and iOS 13
I live in Paris and you can find highly specialized shops too. Some shops only sell about three types of fabric, some others will sell only buttons, a certain type of leather or a special type of ink.
I love getting in those shops and meeting the people who are really passionate about their visibly small yet huge niche. It always get wonderful once you start looking at the details.
Tesla’s cash crunch, explained (2018)
You Just Have to Bear the Homesickness (2018)
The whole diesel/electric/petrol discussion is pointless, the only thing that is actually better for the environment is to drive less. The other three are all about a degree of being less bad, not better.