skysight-inc/HackerNews huggingface dataset:
You are not correct.

Tesla offers, for a $12,000 fee at time of purchase, a replacement policy that will replace the battery AFTER 8 years of use, and only after 8 years of use. This brings the price of the 240 mile range model to $91,900, plus tax and licensing. It is not a warranty that replaces the battery if it fails. It offers no coverage before 8 years, and at 8 years one may replace at any time.

The 6800 3100mA 3.7V Panasonic 18650 Li-ion battery cells used in the Tesla S battery pack have an expected recharge life of 500 charges, which is just over a year if you commute and recharge daily, and is less if you do high amperage recharging such as by using supercharger stations. Most current users are commuting on occasion with their Tesla and do not recharge daily, but 2-3 times a week, so the battery, by avoiding Superchargers, will likely last 4-5 years before the range is reduced to the point that it becomes a problem. This leaves the driver with a car that has a significantly reduced driving range for years 5 through 8 of ownership while waiting for the replacement policy to kick in. (Also worth noting is that for Li Ion battery technology, battery life is damaged by high operating temperature, Arizona drivers in particular should expect shorter life, Alaskan drivers can expect longer life.)

Tesla does offer a $40,000 at-cost replacement for drivers whose batteries have bricked due to not being recharged properly, left in parking lots, or are more than a few years old. This is consistent with the lowest wholesale costs of these battery cells on the global market, with no markup for their added value of the battery enclosure, cooling, heating, monitoring, and recharging hardware, thus it is a fair deal and good value as Tesla is clearly not taking any profit at this battery price point.
I used to work at a mobile app company that made iOS and Android apps. I generally agree. Folks are taking gambles on apps that they really shouldn't.

Lots and lots of apps are far better off as mobile web, especially given all the maintenance/update headaches (app store submissions are still painful and not automated).

There's still a nice monitization story if you're willing to give away 20-30%, but I think the long run equilibrium are fewer apps (not zero, but fewer). They do definitely have value but right now they're overhyped.
Math Rebels Invade Estonia With Computerized Education
I don't understand how this helps the user.

You're assigning a username and password to them.
Are they going to take the action to change it to something they will remember?
If not, how will they retrieve it when they forget?
How is any of this an improvement?
How do tech blogs make money
Can a musician come to your house and start monitoring you to prevent redistribution? No, it's invasive and unethical to do it. It's along the lines of invasive surveillance in a totalitarian police state for the sake of "security". Treating your paying customers in such way is a gross disrespect. DRM does exactly that - it's preemptive policing which violates privacy and treats users as potential criminals by default. It's insulting and unethical to do so.

I'm not even saying that it's pointless, since it doesn't prevent piracy. DRM punishes and insults paying customers who care to buy the content, and does nothing to stop illegal redistribution and doesn't affect those who don't care to buy and pirate the stuff. So what is the point in using it? To upset paying customers by limiting usability of the content and by increasing security and malware risks in shady DRM programs?

Distributors should start treating users with respect if they want any respect back. And it always pays off. In general I get the feeling that actual creators (musicians, authors and etc.) don't care about all this DRM idiocy. Those who push it are publishers/distributors, who can't comprehend a simple thing - DRM has no useful application at all, all it does - it degrades the user experience and punishes paying customers.
I think it could work but you need 2 things: niche content and an audience adding value.
I'm not interested in what the NY Times has to say about sports so why would I pay for it, I'm not even remotely interested in 99 % of all of their content.

I can't tell you how many times I don't even bother reading articles.
All I read is the comments on Hacker News.
Not reading the articles saves me time. Reading the comments doesn't save me time but at least I'm getting a lot of value out of it.

I looked at GigaOm Pro the other day. Some of the content looks interesting and might be worth paying for. Not all of it, but even so, none of those research reports have responses / comments. The audience isn't adding value. Maybe all the value is in the research reports but I just find that hard to believe.
If you drop it on your toe.
The empty set according to bourbaki
Just to save you from adding 'alias ssh=ssh -P xx' to your .profile?

Or better yet, add it to your .ssh/config file:

Host myhost
Hostname myhost.com
Port xxxx

This way, it doesn't conflict with other hosts.
Ask HN: SSHD Rootkit?
Curious if any of the security-minded folk here have heard or looked into this file mentioned in a discusison on webhostingtalk.com :

http://www.webhostingtalk.com/showthread.php?t=1235797

Archive(single page) view for quicker perusing:
http://www.webhostingtalk.com/archive/index.php/t-1235797.html

I just submitted this and I guess the post was marked as dead because of the domain name?
I think combinatorics -- both enumerative and graph theory -- are likely to prove very useful, perhaps the most important thing you could study.

I suspect that differential equations could be left out if you choose. IMHO the subject is boring, but naturally others disagree.

I suspect it will be indirectly helpful to get practice writing proofs. I imagine some of these courses already involve proof-writing.

Finally, I also believe it will be helpful if you see some mathematical abstraction. I think the best place for this is abstract algebra (= "modern algebra"), and in particular group theory.

Here is one fact to convince you that group theory is cool. It turns out that there are 43,252,003,274,489,856,000 positions into which you can manipulate a Rubik's cube. But suppose that you are allowed to take apart the puzzle and then put the pieces back together any which way. Then there are 519,024,039,293,878,272,000 positions - exactly 12 times as many.

Why is the ratio of these an integer? Study group theory, and you will have a very good intuition for questions like that. Probably not something you will need directly, but I imagine it will sharpen your mind in the direction you'd like to go in.

Good luck to you!
Facebook Will Pay No Taxes, Get Huge Refund Instead
These seem like things one should basically be doing anyway.
OS X Unicode crash
Ok, fine.

Now give me one reason why I should actually run sshd on port 22.
I don't think this is going to make anyone like Google Docs but it's definitely a stupid policy that will make people dislike Office.
I guess today is not one of those days where I have to watch my hyperbole.
I'm sure I'm not the only one who routinely calls it "Whole Paycheck".
The GitHub web interface is SO much better than running your own repository.

And all you have to do is trust probably your second most valuable asset to an external service outside your organisation... What could possibly go wrong?
Extract website favicon using Google services
> If you've only got so much money, sure, trying to live off the interest is not a terrible strategy. If we're talking retirement planning (which I thought we were), then planning to live off 8% interest of a minimal amount of savings is NOT a good strategy to shoot for.

Of course it is. It's the most obvious and most reliable strategy to plan for, regardless of how much money you have. Do you suppose Warren Buffett has a cash slush fund stashed away in his mattress for his retirement?

> This is why I made my initial point, that I can see elderly suicides rising in the future.

That might happen. It might happen because people can't plan their lives very well.

> Now of course if it comes time to retire and you only have $500k to make last, you're obviously going to want to take some greater risks with your investments and live as minimally as possible and hope for the best.

How is that a problem, and how does it contradict the idea that one should plan a retirement based on investments?

I think your objection is not to prudent investments but to the unfairness of life. If so, go ahead -- complain about how unfair life is, but in the meantime, save some money for your retirement.
"There is nothing so unfashionable as the last, discarded fashion." -- Paul Graham
This poor author. I think the NYT is putting too much pressure on him to churn out these tech fluff stories and there's not enough material out there. Sorry!
Except developing an MMO doesn't take just one year, it's more like two or three at least.

Avatar's budget, to take a not-too-random example, was $237 million. You're looking at probably about half that for a videogame, which is insane.
> ... and not having children.

Does it? My grandparents (and maybe yours too) had 5x more kids than this generation's parents, while making less money (my grandpa literally made the bricks of his house).
I think you're right. A lot of companies are making an app to show the contents of their website. That just doesn't make sense. The app I use for that is the browser.
Battery pack replacements are going to be the cost of ownership of electric cars. With as extensive a pack of batteries as they have, it'll be very expensive. Lithium ions discharged at least every other day only last ~5 years.
5 Insanely Simple Work-Life Balance Shortcuts From People Who "Have It All"
My Favorite APL Symbol
since you say it that way, i think it's true that Blizzard would create a StarCraft MMO long before it would create a Halo MMO
ReactiveML
It's a big investment, but also huge potential rewards. Bungie is aiming for their own World of Warcraft type recurring profits (most likely micro-transaction based).

I wouldn't bet against them.
Oh thanks, that's a good point! Didn't think of that.
Halo + Ingress = Destiny
Why did they land on the lake bed as opposed to runways?
Using Dropbox as a Private GitHub
The recent peepcode ember video pulls things together nicely, but of course it's not free. https://peepcode.com/products/emberjs

Also there is a great example project available here: https://github.com/dgeb/ember_data_example
I think that you mean "numerals", not math in general.

In our system (and in the Arabic "Indian" system, as pointed out by a fellow reply) numerals are written with the least significative figure to the right, so in that sense it's like com.twitter@holysee.

However, the author has acknowledged that there was a minor error in the post, so this is a case of a retrofitted explanation :-)

In fact, notations do not have to be consistent about digit significance. See, for example, US dates (9/11/2001) or German (and Arabic) long-form of most two digit numerals, which are read backwards, as in "four and twenty blackbirds" (happy to be corrected about Arabic...).
> What I never get is why doesn't anyone ever propose battery exchanges instead of charging stations.

It is being discussed in general, not about the Tesla but in the abstract. The Tesla's battery weighs 990 pounds, so it would be a serious undertaking to swap it or a battery like it.
> Selling a vehicle that only needs replacing every 50 years isn't going to be much of a business plan.

It makes me sad that this is true. Is this really the only place we can go now? We have to produce crappy product in order to artificially create turnover so that income remains steady? It makes me hate capitalism.
> Typography is pretty awful on Android in general. Both Roboto and Droid Sans are nightmare Frankenfonts.

I like Roboto, but what do you find to be bad about those fonts?

> Font rendering on Android is bulky, blocky, and fails to consider how humans read letterforms. So, even if a designer can convince the team to license a better font, it’ll end up a smeared mess on users’ screens.

This isn't really true when setting custom typefaces on various views. Just subclass them and set up the typeface in the constructor and you are done. You just end up using that subclass your in layouts instead of a standard TextView.

> It pisses me off to look at Android because its not disappointing, the way Win8 is, but actively anti-design.

I'm not really sure what you mean w.r.t to text. The text views and code cover most use cases and offer ways to handle flowing text in some cases, but you can always fall back to WebView rendering text content (which is easier for writers or editors to handle when making the text content).
That doesn't sound fair. But it doesn't surprise me. Most of it is a waste of my time.
I find my apps in the browser from people or companies talking about them. Then I go to the app store and do a search for it.
Regarding the productivity thread:

Similar to the tactics of disabling internet access at certain intervals, there's a good way to cut you off from compulsively checking Facebook, LinkedIn etc. at work.

Create a very long, random password and store it in your computer (e.g. KeePass Portable) but do not memorize it. That way you'll be unable to log in at work unless you ask for password reset. If that's not enough, create a special email account for time-suckers and do the same. Works like a charm.

It's a pity HN works for guest users ;)
Thankfully the preceding tenant did that. Having something besides white primer walls is a big plus.
I'd look for companies that are not funded in that case.
Once everyone is driving a Tesla, and filling up for "free", where do the taxes come from to pay for the infrastructure?

In Australia, the high price of fuel comes because the government puts something like a 50+% tax on it. Most people (incorrectly) assume that your car registration pays for infrastructure dev/maint, but car registration just pays for insurance/payouts for car crashes, and running of the registration system.

Most of themoney used to build and maintain roads, highways, etc, comes from the fuel tax. If we transfer to a new form of fuel that is supposedly free as this article suggests, where does the aus government look to get the money to pay for the roads?
are the engagement numbers for sunday correct? it appears to be highest, which doesn't match the conclusions.

[edit: maybe i'm not understanding, but engagement on sunday is highest at 47, yet the final recommendation is for "Tuesday or Wednesday" (35 and 39). why wouldn't you choose the day with highest engagement?]

[also, incidentally, those numbers are all the same to within a couple of standard deviations (1 sd ~ sqrt(n) ~ 6). so the sample size is too small to draw any really firm conclusions.]
You could block all but whitelisted IPs at your firewall, then get a VPN and add the endpoint IP to your whitelist. This way ssh (and anything else you don't want the public to access) is protected from random drive-bys, but you can still get to it from pretty much anywhere.

VPNs are a good idea in general if you are doing anything from a public access point that involves logging in.
Bringing up photo sharing apps was perhaps only a setup for bagging on over-excited storage technology enthusiasts, and I think I agree with your larger point of ignoring the somewhat arbitrary values of in groups, but with that said...

Only in the last five or so years have large groups of people been carrying around high-quality usable digital cameras with permanent internet connectivity, and even in those years the picture quality, usability, and connectivity have been getting better, and the number of devices out their keeps growing.

World wide web search has been thought to have been solved several times until Google came along, and even now, fortunately, folks have not given up on solving the problem of people searching for things.

So in five years how can a bunch of male 20-something storage fetishists in SV have solved all of the problems of photo sharing for everyone? Surely there are problems to solve remaining for them, or for anyone else who do not share their particular needs and want to take a crack.

And there are quite a few more problems to be solved in people sharing pictures of things.
I love SourceTree for the easy visualization of progress of branches as they progress. Using git flow at work, SourceTree makes the whole git experience better and more visual.

Now my co-workers will finally have a decent Windows git app.
Maybe you are buying a Tesla Bluestar then?
Performance / Load Testing
-----

* BrowserMob (http://www.neustar.biz/enterprise/web-performance/how-load-t...) You can upload selenium scripts and they'll run it on X physical / Y virtual servers for a given period of time. It's a great tool to stress test your servers.

* Blitz.io (https://www.blitz.io/) Basically just a DDOS on your server.

* BeesWithMachineGuns (https://github.com/newsapps/beeswithmachineguns) You can set this up with EC2 and DDOS your own server with it as well. This gives you a bit more control than blitz, but it requires a little work to get it up and running.
Interesting. I thought you only needed PCI compliance if your server touched the card, no the front-end, but it makes sense. Nevertheless here in Spain we'll need to wait to have tokenization. There's only one gateway - unless you choose Ogone or Adyen - and hell will freeze before it innovates.
3. They can dump 150 miles of drive time into your car in an hour

Which works out to what, one hour of idling at the station for every two hours of driving, making your trip roughly 50% longer compared to a gasoline car? We need much better batteries and/or better charging technology for this to become attractive.

Graphene-based batteries are a promising candidate: https://vimeo.com/51873011

(For the record, I think Tesla and their Supercharging stations are awesome, just wondering why the author would list this ridiculously long stay at the charging station as a "mind blowing" feature.)

(And yes, battery swapping instead of recharging would also solve the problem.)
> Destiny, slated for release on PlayStation 3 and Xbox 360.

This is fucking irritating.
This is way too complex. Just put everything in .bashrc and symlink .profile to .bashrc. Then if there's something you don't want executed in non-interactive mode in .bashrc, put it in an if statement.

Simple.
Does this number also apply to Tweets? Maybe someone can tell their experience on tweets.
If you like this article you may also love Jack Cheng's "Maxing out Your Triangle" which explains the love-growth-cash triangle. http://blog.jackcheng.com/post/2521829568/maxing-out-your-tr...
The Internet begins with static electricity
"The internet" is a giant drain of time. In my final year in school, I experimented with not getting internet access and instead relied on a friend to update my Debian mirror and read mail in batches. My grades rocketed skywards without me doing much of anything at all...

If you can, turn it off, in more or less drastic ways. Restrict sites like this one with LeechBlock. Try recording yourself, then watch and experience the pain... Never(tm) sit down in front of a computer without a hand-written plan of things to do. Once the task is done, consciously plan the next one, write it down, and repeat. GTD, Pomodoro all can help.

What works for you depends on many factors. Usually one or two of the available techniques are enough to stop oneself from drifting around aimlessly on the web.

We have created this giant information-distraction machine. We should therefore also be able to control it...
Random thoughts on the substring procedure (on strict vs lax/fuzzy APIs & magic)
Having children is orthogonal to making a break with corporate programmed consumerism.
I still can't read "tool for agile planning" without crying inside my head. We really need "tools" to "implement" "processes" in the spirit of a 6-line manifesto, do we? Sigh.
This article is old. Also, J cal wants to have Elon's babies so bad.
You can redirect ssh failure messages to a specific log file, separate from all others, so that shouldn't be an issue.

Also you don't need to alias - .ssh/config should work more transparently here.
The 1-based arrays are theoretically annoying (I'm a C guy), but in practice I find they simply aren't an issue, I guess due to the differences in typical programs for each language. "~=" is unusual (I too wish it used "!=") but other than that, Lua's pretty much like everybody else (":" doesn't really count because it's an operation that doesn't exist in most languages).

"Global by default" can be annoying, but at least it's better than "local by default" like python etc. [As a programmer, who'd rather find bugs easily than save some typing, I think better than either would be "nothing by default, you gotta declare your variables", but that might not be popular for "dash off a quick script" usage; maybe make it configurable based on the load context or something?]

But this:

> The odd and slightly under-documented stack that you have to use when interfacing it with C

... seems almost bizarre. Lua's C interface is probably the most elegant and usable I've ever seen. A stack is the classic abstraction to use for this application, Lua's implementation is well-designed, and Lua's API documentation is both comprehensive and very well written.
Because in experimental craft, one doesn't want to have to line up with a runway when the controls have stopped functioning or a wing has partly fallen off.

Once, when a test pilot landed the X-15 on a lakebed, the fuselage broke in two:

http://www.air-and-space.com/x-15%20forty%20years%20later%20...

Quote: "The X-15-2 on Rosamond Dry Lake following mission 2-3-9*. The fuselage failed when the nose gear impacted the ground. The shock absorbing ability of the front landing gear strut was impaired by foaming of the oil in the strut when it was extended. The back of the X-15 broke at a structural join behind the cockpit."
Dude, you're ignoring what I'm saying.
Hobby vs Job
Very interesting, thanks for the share.
Without looking at the site, here are three potential what we do messages:

"We help businesses make compelling games using their own customer's data"

"We help businesses make personalised games for their customers"

"Personalised games for your customers"
Lost it at "Liked by the kind of men that determine who is or is not “one of us” in tech.". Silicon valley culture is almost, but not quite, entirely irrelevant to the overwhelming majority of "techs". The number of people active in that scene represent a rounding error compared to the rest of the people working in industry in technical roles outside of the valley. Get out of the echo chamber.
> The US probably has a just as big or more sophisticated organization of hackers and cyber warriors.

It's called the NSA.
The Super Supercapacitor [video]
FTA:

> Not on Sundays or Mondays, but if pressed, pick Sundays.

Seems consistent to me...?
Redesign it in OS X then? Given Office on OS X is 32bit and still contains apps that require the Rosetta emulator it would be a good choice.

Then again, I doubt designers ever hit the limits of Office on OS X.
Two things me sane: I get up an hour earlier than I need to in the morning to sit, think (high level/long term), plan and occasionally write. I set "Do not disturb" on my phone to automatically enable at 6pm daily.