skysight-inc/HackerNews huggingface dataset:
> Agriculture and forestry is listed as the second largest sector

That second sector includes quite a few things. For example deforestation for non livestock agriculture, city building, etc. None of which are alleviated by vegetarianism.

Also note this:

> This estimate does not include the CO2 that ecosystems remove from the atmosphere by sequestering carbon in biomass, dead organic matter, and soils, which offset approximately 20% of emissions from this sector.

So in practice this 24% is really 19.2%, and less than that is really caused purely by livestock.

> Some estimates put 20 kg of grain for a single kg of beef. That is not efficient.

Indeed, but chicken or pork produce less emissions than fruits or even dairy products.

http://imgur.com/a/Rwm5R

> Does that mean we shouldn't try be consious in limiting our consumption and be damage we inflict on others?

Sounds good in theory.

In practice if you care about suffering, you should realise that agriculture is one of the biggest environmental disasters of the last couple thousands years. Agriculture has destroyed (and destroys) entire ecosystems.

And before you argue about organic agriculture: that would not feed 7 billion people. Maybe aquaponics / hydroponics could save the world, but it remains to be seen.

If you do really care about emissions and your impact on the planet you could do a number of things like not having kids and getting out of the industrial lifestyle. Many have done it (I tried and failed). Otherwise there is really no moral high ground in vegetarianism.
>Re: average level vs good at them: part of the problem is that they mix skills that almost everyone has to a certain degree (like reading comprehension) with skills that very few people possess (like coding).

If some skills are a boon to success, why would they be constrained to be one or the other type?

Some would be common in most (but not great in the majority, like reading comprehension skills), others would be rarer (like coding or managing people).

>Re: any kind of skill vs being the best performer: they're clearly not referring to best performer skill. Part of their analysis is based on "Time to enter [which] depends on how much training it takes to enter the jobs in which the skill is important." So the level of skill has to be something like entry-level skill for the lowest level of job using the skill.

"Entry-level skills for the lowest level of job using the skill" can still be compared relatively to others entering the same job -- so a ranking as being the best performer among your competition still makes sense.

Clearly they didn't mean you have to be best in the world, or among the top in your country in those skills. Just better than most you're competing against.
True, but dig deeper -- schools don't care about their bottom line because they are trying to make a profit. They care because they are trying to stay open while serving ALL the students. And their funding is driven by the government, which in turn decides how to fund based on standardized testing... which drives the curriculum, which drives the student experience.

You aren't wrong, but you are not describing the bigger picture. There is a vicious cycle going on. And school and district administrators are painfully aware of it, and would love to break it.
It can be, see https://www.adafruit.com/product/2107

Surprised the high-end gear doesn't built it in!
The powers are usually estimates, afaik. however they seem to be open secrets
You'd see an LLC per domain almost overnight IMO
My annoyance with Tesla is somewhat related. I don't like that I can't simply buy a Powerwall or solar roof tiles. I would have to hire one of their approved installers, which increases the cost remarkably. I don't know the markup, because you can't get flat materials pricing data from Tesla, or couldn't last time I checked, but I know labor for solar installation and electrical work is quite high.

I understand why they do it, but it means that for the segment of the population that enjoys that kind of thing, and knows how (I've done my own solar installations, and helped others, on multiple RVs) I have to use much less awesome components. I wanna play with the tech and save a few thousand dollars, but that's not an option for Tesla solar and Powerwall gear. I also want to use it in ways Tesla won't allow (Powerwall can't be installed in RVs or manufactured housing like a tiny house on wheels, for example, even if one were to design the house around safely doing so).
opposed to unknown new cells from AliExpress which may or may not be to spec

Many of those are actually recycled old cells, likely from laptop batteries, and could still have a lot of capacity left --- often, what happens is that one of the cells in the pack fails/goes out of balance and the protection circuit disables the whole thing, meaning the rest of them are still very much usable.
Isn't that what I said in different words?
I've read claims (theoretical and practical) from both sides, so apparently the safety of lithium cells can vary widely based on manufacture quality and maintenance.

But also, on the video, they shows each pack of cells he uses has individual over and underchange and temperature sensors, so the system is able to tell if any individual section is going bad. It's a pretty neat, and external installation, so I don't think it is very harmful on a "massive heat incident".
This could be because of the packaged services that come with the Tesla?
Read the small letters please.

> Greenhouse gas emissions from this sector come mostly from agriculture (cultivation of crops and livestock) and deforestation. This estimate does not include the CO2 that ecosystems remove from the atmosphere by sequestering carbon in biomass, dead organic matter, and soils, which offset approximately 20% of emissions from this sector.

Not only the number includes crop agriculture, but also deforestation is caused by quite a large number of factors.
> "if people decide to eat at a place based on what they think others will think of them, then I think you know what to think of them."

Priceless. Is this yours, @Balgair?
I've never read Taleb pointing to all kinds of procedures as having a potential "huge toll uncertainty".

He gives quite specific examples, which one might agree or disagree with (e.g. GMOs), but which are not unbounded, nor applicable to anything and everything.
Well that's the survivor bias question - is there another factor that's important when you consider the whole population?

In this case, anecdotally, I doubt it. Even the linked discussion thread has a number of discussions on the reason for failing -- and lack of effort was the major one.
Currently, the stopover is in Dubai, not Bangkok (on Qantas anyway).
Semantics. Is a battery undergoing thermal runaway/venting "exploding"? Or merely "ejecting scorching hot gas and catching fire?" Maybe it's not blowing up like an IED, but either way I don't want it happening in my garage.
Judging by the interview process some companies have it's practically all any programmer does.

More seriously, lots of junior developers need to do stuff like that so they don't make mistakes when they move to actually designing things.
Can you give some examples of common use-cases you run into each day?
Unfortunately not, that would fall under coding- which is a useless skill.[0]

[0] https://80000hours.org/articles/skills-most-employable/
BGP leak causing Internet outages in Japan and beyond
Or from credit card churning, manufactured spending, or, in the most extreme case, pudding.
Microsoft Office 365 Product Key Generator 2017 with Activator
There are plenty of countries whose power is 100% or close to it "made without CO2", usually with help from hydroelectric (e.g. Norway). Solar panels are becoming cheaper and cheaper and cheaper. The situation is closer to free lunch than you imply!
Apple makes the best laptop hinges in the industry. It goes where you want and stays where you want. If you think the new one is actually fragile (it isn't) get one with AppleCare, and you'll get fresh new laptops every time one breaks.
I think unit testing and automated tests are the way to go with pull requests that require two developers approval.

Two developer number is important on the reviews to keep everyone honest and to keep everyone interested.
Tell HN: The content is great, but this site is terrible
I know that this post isn't really in the tradition of HN, but this site sucks.

I have been reading HN daily for years and won't stop anytime soon. I rely on HN to keep up and enjoy learning about random interesting things throughout the week. If I had to pick only one website to access, this would be it.

BUT, it is time for an official upgrade. There UI is really frustrating. I engage less b/c I am never quite sure if I just upvoted or downvoted that last post while on mobile. And I am not sure why, but I post more typos here than anywhere else. (Maybe it is the tiny text box? Or maybe it is that every other place I want to post a comment had a native app.

The thing is, this is the best place for content. I know there are 3rd party apps and maybe I should just suck it up and go install a bunch of random App Store apps to see if any of them are decent, but it would be so much better if HN would just give enough of a shit to try.

Just my 2¢.
I've never flown business class, but I'm from Australia and currently studying in the UK. When flying home, I generally try to find a 2-stop flight, which gives 3 7-ish hour flights, instead of the 14-15 hour leg on a one-stop.
But there is a big difference between someone specifically buying them for use in a high-discharge device like a flashlight or vaporizer versus picking up a pack at Walmart next to the AA/AAA

You can find 18650s for sale on walmart.com . I'm not sure if the physical stores carry them, because there aren't any where I live, but I know that in Shenzhen/HK and other parts of Asia you can easily find 18650s for sale amongst other batteries in physical stores.

Because of the high discharge you can hurt yourself or start a fire much more easily. Just look at the stories of people with burns on their thighs from throwing them into a pocket with keys/change.

NiCd/NiMH can also source huge currents if shorted.
Both my wife and I are F1 fans and make a point to watch the races together (which is cool!). While McLaren has no hope of winning watching them fail over and over this and last year due to Honda is heartbreaking.

The quality and design of each teams car matters a ton for winning. The drives of course are a huge part of it, however I strongly believe that you put Max Verstappen (https://en.wikipedia.org/wiki/Max_Verstappen) in the same Mercedes that Lewis Hamilton is driving he would be likely to win.

For those that do not know there are 2 titles here - the drivers title and the team title. The team title is the "Constructors Championship" i.e., they built the car.
EVs are a good idea everywhere.

Even if the power they use is dirty now, upgrading the power sources that feed the grid is a lot easier than upgrading millions upon millions of cars. It is for many reasons a much easier problem to solve.
How noncompete clauses clash with US labor laws
Sounds like it's worth taking a step back and looking at your processes from a high level. If there's pressure to push code more quickly than is possible while maintaining effective code reviews, then you may want to consider where that pressure is coming from. If velocity is causing quality control issues, then velocity is likely too fast. Not to mention that limiting quality checks will reduce velocity in the long term.

Once you have both product and engineering (or whatever forces are at play) on the same page about reasonable expectations, I'd recommend using both. Code review and automated testing both serve distinct yet important roles.
Luckily, home owners' insurance covers stupidity as well as acts of God. So as long as there is no evidence of intentional arson, then insurance would have to pay.
Table of Contents (List of Data Structures):

Op-based Counter ------------------------ 13
State-based increment-only counter ------ 15
State-based PN-Counter ------------------ 15
State-based Last-Writer-Wins Register --- 17
Op-based LWW-Register ------------------- 18
State-based Multi-Value Register -------- 20
State-based grow-only Set --------------- 22
State-based 2P-Set ---------------------- 22
Op-based 2P-Set with unique elements ---- 23
Molli, Weiss, Skaf Set ------------------ 25
Op-based Observed-Remove Set ------------ 26
2P2P-Graph ------------------------------ 28
Add-only Monotonic DAG ------------------ 30
Add-Remove Partial Order ---------------- 32
Replicated Growable Array --------------- 34
Mutable sequence based on the continuum - 36
Op-based Observed-Remove Shopping Cart -- 39
- Keep the screen lighter and the perfect screen tilt adjustments Apple laptops are famous for.

- Keep smudges off your bright new screen.

- Keep your hands on the home row.

- Keep tap areas in the OS sized to cursors, not fat fingers.
Dunno, the only apps I can think of that don't benefit from React are just toy apps or little things like <form> upgrades.

You're way off if you think React doesn't work for anything other than large apps.

I've been bitten this many times where my "little app" grew, and the non-framework code complexity would grow quadratically where I regretted not just using a framework like React in the first place. So when I hear "React is just for large apps", I can't take it very seriously.
Not in economy. They're putting 9 across in the 787, which was designed for 8 across. Same as most airlines, but wouldn't call it comfy.
The amount of sensors they have on the cars is insane. Each race they basically set up a data center in the paddock. Then that is remote linked to the teams HQ DC over MPLS links.

Here is a quick bit about it.

http://en.f1i.com/magazine/73067-f1-telemetry-data-race.html
Case in point: I was trying to type "The UI is terrible" and it came out "There UI is terrible." Which when I tried to type just now, my phone auto-corrected to "Their".

Maybe the answer is that I can't type on my phone and just happen to do better in every other app, or... maybe this site needs a refresh.
Because good security that people actually use is far better than perfect security they won't?
Review game of thrones ;)

More seriously I think you need to realize that there are two “politics” in management:

First there’s managing and interacting with your direct reports. This requires a different set of skills/interactions than the other more “politicy” element of managing interaction with other teams and higher ups. The latter effects and is effected by where you want your career to go.

The first step for me was recognizing that these two roles are completely different.
The difference between "can be ignited" and "massive bomb" is not semantics. Even new pouch cells are way safer than they used to be. Unregulated 18650 cells are quite safe if the correct circuitry is used. The only dependable way to ignite them is to smash completely open them at full charge.
This is true for me. My 2012 rMBP was on it's last legs and I really needed something new. Bought the 2016 15" and was forced to get the stupid touchbar.

It's a useless gimmick that removed some major functionality for me (a physical escape key). The touchid is amazing and I wouldn't ever want to go back to a device without it. It's use is a $50 gimmick used for volume and brightness controls which is neato at best and frustrating at worst.

Other than the touchbar the laptop would have been a solid "meh" as well. I actually enjoy USB-C only, and the large trackpad hasn't offended me like I thought it would. I don't really notice a difference though, so I don't know why it needed to be bigger. The keyboard also was a step back, but I'm pretty firmly convinced it's one step in the direction of haptic keyboards for Apple as they continue to remove physical components that break. If this holds true I'll be more forgiving as I see that is interesting tech someone needs to pursue. Battery life can also be an issue, since it's now so tied to workload.

All in all a pretty disappointing extremely overpriced device that was a step back from the previous generation. If I were doing it all over again I would have picked up a 2015 rMBP (the 2012 being amongst the best laptops I've ever owned) and waited a few years to see if Apple gets it's act together again.
It's not buzzwords, it's jargon. Speaking as a physicist, here, it also reeks of someone trying to show off GR101 skills.

It's like a CS guy responding to "hashtables are O(1) lookup" with a wall-of-pedantry about different implementations, complete with complexity analysis by evaluation of recursion equations and whatnot.
But if you are a better opinion about the implementation of Git in OCaml, you can comment my PR. Then, we can talk technically about your point :) !
Not many people know TikZ well enough to spin circuit diagrams or integration contours from a class on analysis as fast as a professor can draw them on a board. While I'm skeptical that you managed this, if you did, you're a rare talent.
Because it's simply not an option. VCs raise the vast majority of money from institutional investors, not individuals.

If there are individuals involved, they're high net worth already. You need to be prepared to write a $500k-$2M check and not see a return for an extended period of time. Even then, getting into a top-quartile fund with the best return proposition is going to be highly competitive. Finally, funds are relatively infrequent, so you still need to be at the right place at the right time.

Either way, we're clearly describing a scenario which is well beyond the situation in the ask.
About the same as I feel about 95% of software running on the internet being copied from StackOverflow. Rather Meh. I would worry if the engineers at Boeing did it, but a bunch of crappy javascript apps running on the web? No.
As for the neighbor, I don't live on a zero lot line, so let him burn his house down all he wants.
On the other hand, cars have a much shorter lifespan than power plants. The average age of a European car is 10 years. What's the average age of a power plant?
"Touch Bar is useless!" - well, so are function keys for just about everyone.

It's not going anywhere. In five years, every laptop will replace their function keys with something similar.

imo, it's a nice incremental improvement, and it's actually slightly more functional than the F-keys.
Have you read any of the past threads about HN redesigns?

https://hn.algolia.com/?query=hacker%20news%20redesign&sort=...

You could always get a chrome extension to reskin the desktop site. I personally am not a big fan of the mobile apps either so I tend to limit reading to desktop.
https://www.youtube.com/watch?v=Md4l9bFDOtc

That, to my untrained eye, looks like enough batteries to take down nearby structures if they went up, and packaged in such a way that a runaway in one cell that caused it to vent would propagate to other cells nearby.

Granted they're pretty reasonably protected by 2-3 layers of electronic monitoring and on-cell fuses, but lord, a small fire would burn the neighborhood.

I think all that it would take to render them marginally safer is a firewall between the different packs made of some good steel or refractory material.
The part compressing the air is not a turbine but an impeller.
Avenged Sevenfold vs. Warner Bros: Testing the “7-year rule” in service contracts
Because touchscreen on a laptop don't make sense because they

- Unbalance the weight of the laptop.

- Lead to finger print smudges all over the screen.

- Take your hands off the home row

- And tap areas need to be far bigger than mouse areas. You either get too tiny tap areas that make interfaces harder to use, or you get too large areas that are a waste for scrollpad/mouse users.
IMHO that's because the skills to become a leader aren't the same as the skills to be a good leader. See politicians for the premiere example...
Being able to control playback between Spotify, iTunes, and YouTube without moving windows around is enough of a killer feature for me.
sacramento, ca

boulder/fort collins, co
Non-Security Articles
Is this from C++ For Real Programmers? :) a nice book by Jeff. I wonder what's he's up nowadays.
DOOM – Behind the Music [video]
One possible system for ensuring domains would be fairly used is a google based one:

When you register a domain, it initially sits alongside a high entropy string, like mything.3ku23j9. You then get traffic and links to go to your domain. If you get sufficiently popular, google will show your domain as one of the first hits for "mything". At that point, you get the mything domain bare.
How to Buy IOTA – The Revolutionary New CryptoCurrency Built on Tangle
> the existence of many valid models and simple mappings between them implies a 'deeper model' at play

Not necessarily. You can have completely different formulations of the same physics. Lagrangian, Hamiltonian, and Newtonian dynamics are different models of classical motion. Does that imply there's a "deeper model" of classical motion? I wouldn't say so.
Photons are gauge bosons and those are tricky because they involve making a choice of gauge. I discuss gauge bosons a bit at https://news.ycombinator.com/item?id=15107372 if you're interested, although you can turn to any number of textbooks or similar sources for formalisms and likely better explanations.

For the same patch of spacetime with "a photon" in it, different observers can calculate different photon numbers and different photon energies.[2] That is to say that these properties are not always conserved under a change of systems of coordinates (trivially, when we have two observers with different observables, we can fix a coordinate system's origin on either of them, but that doesn't make either "right"). Indeed, the properties of the photon that survives such changes are: they locally move at c, they have no intrinsic mass, but they do have momentum (and thus contribute to the stress-energy-momentum tensor).

The intrinsic mass is the same as the rest mass (a quantity that remains the same in all frames of reference related by Lorentz transformations). The intrinsic masslessness of photons is required for the gauge invariance of the Feynman amplitudes of QED or the Standard Model. More detailed explanation would involve a trip through an explanation of the Ward identity[1] which gets even harder when curved spacetime is in play.

I'm sure you've already discovered that the topic of photons' frames of reference comes up a lot in much harder-science forums than HN, and hopefully you've found a decent treatment of that on e.g. physics.stackexchange.com or physicsforums.com. If you find a decent link, maybe someone (and probably I) would appreciate it if you attach it to this thread because it is likely to come up again someday. :-)

- --

[1] https://www.wikiwand.com/en/Ward%E2%80%93Takahashi_identity

[2] redshifting is the clearest case of photon energy change, and can arise from uniform relativistic motion, relative acceleration, metric expansion, or real gravitation. Extremely relatively accelerated observers will disagree on particle counts generally, with the Unruh effect serving as a partial formalization.
> And you don't go around an oval unlike indycar.

I just came back from looking up the IndyCar tracks for this reason, to see what non-ovals there are. :-) I prefer road courses, myself.

https://en.wikipedia.org/wiki/List_of_IndyCar_Series_racetra...
Germany invaded Poland on the 45th anniversary of the Japanese occupation of Korea. (Maybe not exactly, but close.) Japan had been a menace in the East Pacific since the 1890s, formed an anti-Russia alliance with the UK, used WWI as an excuse to invade German islands in the Pacific, and was trying to invade further into China during the time between World Wars in Europe.
You don't need radiation shielding to go to or stay on Mars. The health risk from the excess radiation is moderate, should be a very low priority for an adventurer.