skysight-inc/HackerNews huggingface dataset:
Li-ion batteries have the second slowest self-discharge of any battery and the longest cycle life/easiest upkeep.

An li-ion battery will do about 500 discharge cycles from 0-100. They'll do several thousand from 20-80, and tens of thousands cycles from 30-70%. If you have a few days of storage, the battery as a whole will last an incredibly long time even when cycled every day.

As for why: When the battery is kept at a high or low voltage, it puts an overpotential on one side or the other of the battery. There's more or less lithium on one side of the battery and it tries to diffuse across the battery very slowly. It never makes it to the other side and reacts with the electrolyte and is lost, reducing capacity.

The closer it is to 50%, the less lithium is pulled/pushed out into the electrolyte.
I don't know if I'm in an especially good mood today, but it's quite a while ago I read something that I found as amusing as this.

I'm actually really impressed by the phishing approach.
Thoughts on replacing Arel with Diesel + Helix[0]?

[0] https://github.com/tildeio/helix - When Helix can handle that complexity (if it can't already)
Drives me a bit nuts too, and I would disagree with some of the other things in this page as well (e.g. the preference for "human-readable" file sizes).

But there is a great joy in being able to release a new utility and say about it, "This is how it should work." It reflects your own desires, you understand it, you made the decisions that went into it and have actually thought about the alternatives. There's a delight there. It could be a sign of a piddling egotist, or of a developer who is excited about what real users get to see.

(I did this sort of thing once -- reimplementation of commonly-used, if more niche, thing + manifesto -- from more than 20 years ago: http://all-day-breakfast.com/wm2/)

My main hope for anyone doing this kind of thing is that not too many people actually use it. You don't want to get stuck supporting a tool like this for the world and its dog.
I'd also consider things like piping to awk or finding the largest files in a set of directories. Human readable sorting is much more complex.
Triplebyte (YC S15) Is Hiring an Account Manager
> I hate using 'du'

Why?

On the other hand, I like to have small tools that do one thing and do it well, and that you can combine to do more powerful things. Personal preference, I guess.
Please read this summary of the conversation and tell me how your comment follows.

paulgb: Lauren Southern was attempting to block ships.

bluthru: No, she was just reporting on an attempt to block ships.

learc83: No, she participated. Here's a quote from her saying she participated.

bluthru: You can't inhibit human trafficking?
You should be focused on that first. Majority of your traffic is going to be mobile at this point.
Teslas have a "trip" mode. During normal operation they charge to 80%, but if you put it in trip mode it charges to 100%.
Memory Security in Go
This binds to libgit2, which binds to curl. I believe that brings it in.
For comparison, ls is 38k on macOS (edit: and coreutils’ ls is 138k).
Red Hat provides a stable ABI for a pretty large set of symbols. Unless you are doing strange things in the driver, a module built for RHEL 7.0 should be fine until 8 comes out.
The crash takes the form of it locking up. This is particularly annoying when you need to turn the volume down.

Clicking on another app usually unlocks it.
> They also found it was pretty hard to study general trends, due to an overwhelming number of factors and poor quality of source data.

If the effects of gun laws can be lost in noise among crime statistics, and the right of the people to keep and bear them shall not be infringed, it seems pretty outrageous to suggest that there is any reason to introduce equivalent laws which a) infringe the right of the people to keep and bear arms and b) have had no effect that can be detected in the statistics in any implemented form.

Vital records and the corresponding court records are an excellent, high-quality datasource. If your "life saving" laws can not be detected in vital statistics, then you have failed.
Do ethereum smart contracts prevent this?
It may take a shift in how we share information and perform science before we find a way to trust as much again.

Beyond the existing standing question of why more science papers don't publish information like the computer code they used, I've wondered why there isn't a push for "science-as-code". For example, if there was a common DSL that describes science lab automation, then a futuristic science paper would come with some a package that would drive another lab's robots and equipment to do the exact same experiment with the same steps, and let other labs alter the steps as they see fit once they reproduce the same results to toy with the experiment's findings.

Then all the calibration steps of each piece of equipment, all the sampling steps, all the measurement steps, etc. are all completely reproduced as code. Steps only expressible as "human hands do [insert-motions-here]" are translated to waldo motions, pressure sensing, etc.

Then a lab notebook would be filled with human interpretations of what scientists are seeing, hypotheses, etc., alongside a time-series recording of every step taken, environmental metrics measured, expressed in that DSL.
In general, they could. As always, it's a tradeoff. See the above thread about binary size...
Why it's smart to invest in female-led companies
I lived in a Polish neighborhood in Brooklyn for a few years, and absorbed as much orthography and pronunciation as I could during that time. I ate a few pączki, too.

While I learned to speak a little bit, it was not enough to be functional beyond basic greetings and ordering food. It was always a lot of interesting fun, though.

The main outcome of all this is that for ten years, whenever I see a Toyota Camry, my weird brain thinks "hmm... tsahm-rih..." and I roll my eyes at it.
FWIW the arguably ideal target for compile-to-web tech, WebAssembly, is adding some OO too [0].

0 - https://github.com/WebAssembly/gc/blob/master/proposals/gc/O...
> once the "boring" educational content starts

Imagine a cartoon about a kid playing with a doll. Cartoon creators know a lot about related topics, like life skills, social dynamics, fashion, etc. And so they can seamlessly integrate bits of those rich domains of expertise into the cartoon. The OP cartoon bear video covers a lot of ground.

But now imagine a cartoon about a kid playing with a puddle. Cartoon creators know very little about puddles. Almost nothing of their physics, biology, chemistry, geology, engineering, and so on. No clue - stomp, laugh, mess. So science doesn't get the integrated and engaging storytelling which those other topics do. But there seems no fundamental reason it can't.

Except... searching for videos is painful. Even when you know a video exists, it's often implausible to find. Using google and bing video search to find bits of educational content, feels like searching the web circa early AltaVista - one stop among several, all of very limited effectiveness.

FWIW, here's a big stinky whale heart https://www.youtube.com/watch?v=kJnKuw7Wvz4 hoisted for display https://www.youtube.com/watch?v=N4JIwlkUdEs . A kid demoing a heart rate app https://www.youtube.com/watch?v=BOjWmA_7yUc , and taking a stress test https://www.youtube.com/watch?v=MCS_6ixfq8U . A fetal hr app https://www.youtube.com/watch?v=5XaYl6RJVsc&start=13 . A rabbit hr https://www.youtube.com/watch?v=ADLFLDszTYA&start=50 . A boring video of an interactive heart anatomy app https://www.youtube.com/watch?v=TLyXWjWcQtc&start=65 , to illustrate that VR/AR has the potential to massively disrupt education. A boring exhibit with some hearts https://www.youtube.com/watch?v=QthT9bs8Tws&start=15 . There are very many videos on stethoscope use, variously flawed. Which is great for assembling piles of Fair Use clips, but not so good for linking here. And... out of time.

So to reframe my original question: I wonder if youtube kids viral video formats might be used for outreach... but the cost of creation could be prohibitively large. Though there might be low hanging fruit, like a play-do egg surprise, filled with water, or bubble foam, or jello, or liquid nitrogen, or hydrogen, or...

Thanks for your comment. I was(am?) considering an education project, but was clearly doing selective memory on just how massively time consuming it would be.
...Or they just asked a number of people to recommend a favored book, and this is the list that they got.

Why does everything have to be about diversity?
Cite your sources, because you're objectively wrong.

Stop saying that people literally advocate for death. This is something that has happened in the past, something that will probably happen in the future, and being a sensationalist about it just makes you an asshole.
While it's not the intention to replace the binary itself, I'm just not a fan of the idea of substituting system built-ins in everyday behavior. Stuff like cd, ls, etc. I like to keep it to the basics.

Even just with PATHs or aliases, or a new binary entirely.

And I'm a person who is no stranger to dot-configs. I've never taken it as far as Z(1), https://github.com/rupa/z.

A system builtin is stuff you'd see stowed away in /bin. They are essential low level binaries you have to trust. If somehow a malicious ls got out there, nothing's stopping people from writing memory-safe malware that uploads your $HOME configs to some server in a far away land.

The more I say this, I guess defaulting to a substitute for a builtin command doesn't matter. The average developer relies on so much third party stuff in their shell, vim, package manifests, and so on that all these years could have done bad stuff, nothing has happened.

Maybe it's my defense mechanism firing that my own dot-config has grown so big I don't remember what the hell's in it anymore.

In fact, it's a common thing for terminal applications to accept environmental variables to use third party applications. For instance, $EDITOR, and less often (but no less useful): $PAGER. You can give it a shot with most(1) [1], I mention it in my book, The Tao of tmux [2] (available free to read online).

So also, regarding $EDITOR, if you prefer that being in GNU nano, Pico, Vim, or emacs, set it in your .bashrc/.zshrc:

export EDITOR=vim

Also, for git's editor, I don't remember if it falls back to $EDITOR, but you can do:

export GIT_EDITOR=vim

Another tool at your disposal for ls(1), which even FreeBSD supports, it $LS_COLORS:

http://man7.org/linux/man-pages/man5/dir_colors.5.html

edit: actually, BSD's ls(1) seems to be $LSCOLORS (https://www.freebsd.org/cgi/man.cgi?query=ls&sektion=1):

[1] http://www.jedsoft.org/most/

[2] https://leanpub.com/the-tao-of-tmux/read#leanpub-auto-read-t...
I adore NK Jemisin so much, the awards are all so deserved! It was particularly nice that she won the Hugo in the midst of all the drama, too.

Another author I want to throw out there, is Liu Cixin - his novel The Three-Body Problem won the Hugo for Best Novel the year prior. Not a woman, but scifi from a vastly different cultural/racial angle than a lot of us are accustomed to, I would imagine.
From my own experience, it's the opposite. I've known several people who thought they would love an Apple watch, and all ended up selling it used after a few months.
Having used isatty in some of my CLI programs to alter the behavior depending on whether STDOUT is a TTY, I see the appeal. It allows the program to do the best thing depending on how it's being invoked.

However, more recently I've grown skeptical. It leads to surprises, and if a person isn't familiar with the finer details of file descriptors, they may wonder why piping a program changes its behavior. I think this example of someone shooting himself in the foot with pwgen has convinced me never to do this again.
I'd probably blame the fanatic GMO opponents first, who can typically be refuted by the simple arguments you mock.

Unfortunately nuance and middle ground are hard to come by online. And it doesn't help when you dismiss all GMO proponents as paid shills.
Could also send files over MSN Messenger
Given that the FAQ says that this isn't a drop-in replacement, I don't think they're a fan either.
I think that would be a tough sell, and open too many undesirable side effects to pass legal muster. It would provide any bad actor legal cover via open sourcing.

With the validity of click-wrap license agreements, the water is muddied further: If users are responsible for complying with their terms, a case could be made that users are, for legal purposes, NOT responsible for being compliant or cognizant of anything not in those terms or other explicitly stated capabilities. For an open source package, that may only be a package digest or readme.md file. (and of course the distribution license e.g. GPL etc.)
That's a clever hack, I like it
>lot of the popular "anti-monsanto", "anti-gmo" groups (e.g. David Avocado Wolfe) are pretty nutjob

It's worth noting that having such groups is a commonly used counter intelligence tactic: create a loud and incoherent pseudo-strawman opposition to distract from those who are actually asking legitimate questions.

An effective astroturf campaign calls for both pro-x and anti-x shills.
I am one of those 63,000.

I preordered out of sheer excitement. After spending the time to sit down and work it all out realistically, I decided that a new car could wait.
I'm not really worried about how fast I am, I'm just curious how fast I am in comparison with others. (I am fast enough for my needs)
It's weird and not usually reported like that. Possibly it is a typo, but either way it's relatively closely coupled to storage capacity: li-ion is typically used around 1C, so ~1.3 GWh of capacity was deployed, within a factor of two or so.
Well, in this case if you were going to share anyway, why not send some of that money to somewhere other than Jeff Bezos' pockets, be it yourself or a charity?
Any recommendations for a book about the same subject matter, but more on the academic side?
Unfortunately it's not quite where it was though. It's about one key's width in from the left. Presumably for the sheer sake of symmetry with the touch sensor the other end.
You would never say that you are 0.0018 kilometers tall. Using sane unit sizes is important. If two files are orders of magnitude different in size, it's easy to tell that just by the units. As opposing to counting the number of digits, which is tedious and error prone.

If they are similar, then it's easy enough to tell that also. E.g. 1 GB vs 995 MB.
Loved Three-Body Problem!
When I worked as a bank teller briefly, we had this planned out. There was a stack of bills (usually 10s, but it was kind of random) that we were only to give out if we were actively being robbed. They were indistinguishable from regular currency to avoid suspicion, but the serial numbers were recorded for tracking purposes.

This was in a small town bank, and I'm sure that larger banks have more sophisticated policies. I'm curious to know if ATMs have any similar features.
> Granted few or none of these things may result if we're talking about trash fiction, which isn't better than any other time-waster one may choose (TV, say—though both are fine if one's goal is simply entertainment).

I think there's an argument for reading as entertainment, regardless of quality, as a form of non-productive entertainment that is less harmful than other forms of entertainment. I've taken to switching off my devices at night and just reading books (fiction and non-fiction) before bed.

I would say my attention span has benefited greatly from this, as has my sleep (from not staring into blue lights late into the night).

Of course reading fiction isn't the only activity that this could apply to. Just the one we happen to be talking about.
It's not numerology, it's number theory. We can directly compute these fractions, and they are in some well-defined way 'best'.

To find a better approximation to pi as a rational you will need a denominator of 16604 (52163/16604)

See https://en.m.wikipedia.org/wiki/Continued_fraction#Best_rati... for an intro to the theory. Reason for that large jump is the 292 in the continued fraction of pi.
You can see a fair bit in the Cephalopod order, from the Nautilus (https://en.m.wikipedia.org/wiki/Chambered_nautilus) which has no lens, the Cuttlefish with monochromatic vision through to the Octopus.

It's interesting to observe the differences, cephalopods don't have blind spots and can perceive polarised light.
News-flash, company people have known was evil for ages, actually is still evil.
It's not overriding anything, so you're ranting against a faulty premise. The command is called "exa", not "ls", and it isn't even a drop-in replacement -- it doesn't have the same flags. You can't alias "ls" to it.
It will definitely be easier to check it out this way.
> I believe the former is the case.

I'm just curious why you hold that belief? I don't have an opinion either way, but I'm curious if that is an informed belief.

I agree that it was a problem even more recently than a century ago. It was probably a problem as recently as 10 years ago. However, in 2017, it's not hard to be published. You can even self-publish.

Unless the topic is related to the author's identity (i.e. it's about gender, race, sexual orientation, nationality, etc.), I don't see why someone should care about the identity of an author.

Take "The Death and Life of Great American Cities" on your list. Why does the gender of the author matter for such a topic? Books are written by individuals not demographics.

This is a genuine question and not an attempt to troll. I don't understand why gender or any other identity needs to be a concern aspects where it is orthogonal/unrelated.
Asking the important questions. Maybe exa could show a flying axe?
> Person writes a tweet insulting a very large group of society.

> Acts surprised when a minority of that group retaliates, albeit it very offensively.

It sucks, but thats just another day on social media in $CURRENT_YEAR.
It should be JavaScript, next: because JS is not Turing-complete.
Based on the number of people who are absolutely certain he wouldn't be involved, the circumstantial evidence suggesting he wasn't, and the lack of any solid evidence that he is, I think the smart bet to place is on this being Swatting.

In other words, AlphaBay goes down, FBI analyses information and determines Mr. Redacted was responsible for Kronos. They arrest him, and in interrogation, he decides to blame someone else for anything they can't actually prove is him directly.
Income taxes are progressive in both Canada and the US, so this tax bracket stuff is a red herring.
The old saw from too many bad Westerns of “I’ll see … and raise …” is an invalid string raise. Poker actions must be atomic.
If they wanted the top row to be flexible, I would have prefered individual keys with an eink-style surface that could change, but would look completely normal otherwise.
Thanks, but I wanted to report it nevertheless because it says the file is self contained.
Ask HN: How did you go about estimating the “market” for your last product?
Basically, if you build it, will they come?
I know this is not a trivial matter, but before embarking on spending (at least) several hundred hours building an MVP, how do you figure out whether to pursue an idea?
http://jezebel.com/homme-de-plume-what-i-learned-sending-my-...

I have posted it twice to HN, and it was essentially ignored, but it provides good evidence that women writers have a much harder time getting published simply because they are female.
I'm guessing it's short for examine
Interesting; du reports on mine at 20k.

% du -h /bin/ls
20K	/bin/ls

Although as you mention...

% ls -laF /bin/ls
-rwxr-xr-x 1 root wheel 38624 Jul 15 00:29 /bin/ls*
I agree with your argument, but need to correct your example..

Leading laundry detergents emit chemicals determined to be toxic and don't need to list ingredients.. :(

http://www.washington.edu/news/2008/07/23/toxic-chemicals-fo...
Apple Said to Seek Lower Rate in New Deals with Record Labels
Science is a process and is close to an infallible thing as we have created as humans. There is no problem with science.

What is happening here is "lying". The people creating false and misleading scientific results are liars and it becomes a question of taking skeptical views towards sources and knowing who to trust.
>unless you have some fancypants sort which understands them

FWIW GNU sort can sort by human readable units using the -h option.
Well, yeah, of course you can, but the comparison is nonsense.
Indeed, but you are speaking of relativity on a smaller scale. The problem is, at a glance, seeing 990KB flash by next to 1MB, you will mentally categorize them very differently.

I would prefer to choose the base unit and see the decimals myself. Then I can quickly ascertain the difference.
Perhaps because virtue signalling has never been more popular?

In an industry where we all earn well, have similar qualities of life, similar careers, etc. virtue signalling (often wherever possible) appears to have become the perceived fertile soil for differentiating yourself, and "elevating" yourself.
I can kind of see where you're coming from.
Ancillary Justice is an excellent book, and the choice to make the main character not really understand gender and use female pronouns for everyone really makes it obvious how much we normally assume people to be male in the absence of other info.

Not by a female author, but on the topic of diversity, another one I'd recommend is Ninefox Gambit by Yoon Ha Lee. The author is a queer trans man. This book and Ancillary Justice are the 2 best books I read in 2016.
>Extraction of lithium from old batteries is five times more expensive as mining lithium.

Even as an upper bound that's still a silly thing to say. It means comparing a lab-scale extraction with massive multinational, highly-automated mining operations. At scale lithium recycling would certainly be much cheaper than five times more expensive.
I don't like the touchbar at all. I didn't initially like the keyboard either, but have grown quite quickly to prefer it - seems more solid, and the keys are a bit larger.
Same. I've been loving it as well. I've had the 15" MBP since December, and it took a week or two to get used to the keyboard, but once it happened, I haven't looked back. It was weird at first, but now I rarely even think about it anymore.
You can also just rename a x.zip to x.piz (or any nonsense extension) and most services won't try to parse it as a zip.
Until wasm has GC, we're not likely to see much in the way of compile-to-web outside of C, C++, or Rust.
Twelve years of grade school and high school are free in Canada. University isn't free, but is significantly subsidized, and there are various grant programs for people who can't afford even the subsidized rates. The Ontario student aid program is called OSAP.

You want an education in computer science at the University of Waterloo? If you're a Canadian or permanent resident, that's $7,278.48 per term for a total of roughly $58K plus living costs.

https://uwaterloo.ca/finance/student-financial-services/tuit...
But how do you infringe on a militia? Only one right is actually mentioned here; nothing is said about a right to a militia.
16 of the Best Landing Page Design Examples You Need to See in 2017
It's not like it was hard to figure out what was going on.

On one hand you have scientists publishing letters of concern regarding glyphosate arguing for more studies to be done because of hints of carcinogenic properties.

On the other hand you have a full blown shill campaign on Reddit and other website, being all like, "there is absolutely nothing to worry about, why do you hate science!". And lobbyists bullying the EFSA into publishing a statement in support of glyphosate so that it could be relicense for further use within Europe.

You can trust science. You just have to be aware of the conflicts of interests. Monsanto hasn't bought every single scientist out there.