Infant simulators don't prevent teen pregnancy - <AUTHOR> https://www.bloomberg.com/news/features/2016-12-22/robot-babies-meant-to-scare-teens-out-of-having-kids-aren-t-working <comment><USER2> I'm sure the most effective thing to do is to teach them how to have safer sex and to make reproductive healthcare access easier, but I wonder if it will be at all useful to simulate pregnancy. I am not sure I would go through with having kids if I knew what was in store. Being unable to move without pain, not having had a restful night of sleep in 7 months, feeling like I'm constantly hung over for 7 months... everyone jokes about how a baby will wreck me but I'm actually looking forward to birth and dealing with a newborn because at least I'll mostly have my own body back. Pregnancy is wrecking me.

<comment><USER3> For me, if you wanted to simulate the worst part of having a baby, it would be a random alarm clock (5+ times a night) with a ridiculously complicated off switch. Maybe with sprays of bodily fluids. A cross between sleep deprivation torture and that number-entering bit from Lost that stops the world from exploding.

Every baby is different and every parent is different, but:

\- You may not get restful sleep for a couple of years after the birth (my daughter didn't go to bed easily and sleep through until 3 1/2).

\- If you breastfeed, you may not get your body back for a while yet. Even if you don't, it is exhausting catering to the whims of small kids. I'm a guy and my body is _tired_ every day after carrying two kids around.

\- There are new and exciting forms of pain waiting to be discovered.

Luckily the memories fade pretty quickly - I got a rude shock when the second came along and reminded me of what it's all about.

<comment><USER2> That's my body right now though, which sucks, and I can't share the burden with anyone yet - down to using up all the sample nursing pads due to leakage. Plus having to roll around in my office chair to go to the bathroom when I'm having a bad pain day. And nausea 24/7 (what "morning" sickness?). I know most folks have it easier than me, I got the shit end of some sticks (to the point my OB wanted me to take disability leave if I was still working).

I can only hope that most of this isn't permanent and that the actual birth isn't too traumatic.

</comment></comment></comment><comment><USER4> Why would anyone think that giving a simulated baby to female primates that are biologically wired to reproduce and care for their offsprings would reduce their desire to reproduce?

If anything it's like giving them all the perks as in having the good feeling of caring for a baby without any of the bad.

If they want to reduce teen pregnancy they might want to develop a morning sickness, sore nipple and vaginal tearing simulator and even then it's likely not to work well.

Just teach them how to use a condom.

<comment><USER5> Condoms ruin the sensation and are so bad at preventing pregnancy they're on par with withdrawal. We should make hormonal birth control and IUDs cheaper and more accessible instead.

<comment><USER6> Condoms are on par with withdrawal? Do you have a source for that?

<comment><USER7> Condoms have a theoretical failure rate of 2%/year, which is much better than withdrawal, but a practical failure rate of 10-15%, which is about the same.

[http://goaskalice.columbia.edu/answered- questions/explanatio...](http://goaskalice.columbia.edu/answered- questions/explanation-condom-failure-rates)

<comment><USER8> Doesn't that just circle back around to poor education?

<comment><USER5> No, people don't use condoms every time like they're supposed to because they ruin the fun, not (just) because they're stupid/uneducated/irresponsible.

<comment><USER4> What fun do they ruin exactly?

</comment></comment></comment></comment></comment></comment></comment><comment><USER9> It's the first time I've heard about these robot babies and it's the strangest thing I've heard in a long time. Why waste so much of the scarce money available to schools on something that can be easily replaced by 1h of earnest talk and/or a teen mom coming into class?

That aside data shows that the bigger problem is actually people getting their babies too late rather than too early: [https://www.cdc.gov/nchs/products/databriefs/db232.htm](https://www.cdc.gov/nchs/products/databriefs/db232.htm)

<comment><USER10> > people getting their babies too late rather than too early

Summarizing a number of studies, it seems that the biologically-healthiest scenario—with the best and fastest recovery for the mother's body, the healthiest children, the least risk during [in-hospital] labor, etc.—comes from women having all their babies just after puberty.

The _problem_ with that is that teenagers don't know how to _raise_ babies. But nobody ever said that the people _having_ babies _need_ to be the people raising them. "Teenage mother" is only a problem in Western culture because we lack multigenerational households with grandparents there to assist (or effectively take over) the raising of the grandchildren beget by their still- puberty-addled children.

Heck, assuming the sort of compressed generations entailed by a culture following an early-birth strategy over decades/centuries, most "grandparents" would be 30-year-olds: exactly the age that seems to† puts people in the mood to _raise_ babies.

† judging by things like adoption-seeking statistics: [https://www.cdc.gov/nchs/data/series/sr_23/sr23_027.pdf](https://www.cdc.gov/nchs/data/series/sr_23/sr23_027.pdf)

<comment><USER11> Interesting. I wonder how much we could improve the physical and financial health of society if caretaking lagged a generation behind birthing. At this point, such a social policy would be extremely difficult to implement in the west as we've not just discouraged but morally proscribed teen pregnancy.

<comment><USER12> That moral proscription is a feature of the Industrial Age. Prior to that, an unmarried 20 year old woman was an considered an old maid in many circles.

Multigenerational families solve many problems but create others, especially if the woman is joining the husbands family. That said, in the the US today the model where you pay 25% of your income to have a 20-something watch your kid while you work is certainly not a sustainable model.

</comment></comment></comment></comment><comment><USER6> My observation on the results that after the program twice as many get pregnant and 1.5x as many get abortions, is that the baby reinforced their preexisting ideas about whether they'd want a baby or not, and had more sex while confident in their decision.

</comment><comment><USER12> As part of a couple who struggled to have children in our 30s, I think it's sad that society isn't making that the norm, when younger people are perfectly capable of having children. We married at 25 and bought into the bullshit pressure of building a super career, etc.

The other thing that gives me pause is that if my kids follow current trends, it's likely that I'll be dead fairly early in my future grandchildren's lives, which is a sobering thought.

</comment><comment><USER13> It's almost as if young people like to have sex and simultaneously make poor decisions. How were robot babies supposed to change that exactly? You're not going to stop them from impulsively doing things, just have to make sure they have the tools to do it safely.

</comment><comment><USER14> Some teens maybe don't have the maturity to make the connection between 'unprotected sex' and 'babies'. It requires thinking about consequences of one's actions.

<comment><USER15> No, teens certainly have the maturity to understand that connection quite well. What they don't have is the intellectual and hormonal maturity to realize that these connections also apply to them no matter how clever they believe they are

<comment><USER14> Which is what I meant to say :)

Obviously teens are aware of the relationship, but contextualizing it within one's own life is hard.

<comment><USER16> To be fair, that applies to many people across many things. "It won't happen to me" type of thinking is quite common across many ages for many scenarios.

</comment></comment></comment></comment><comment><AUTHOR> Policy makers have a habit of underestimating the intelligence and savvy of young people. Millennials, who grew up on Amazon and data visualizations, want the facts and to decide based on the preponderance of evidence, not be swayed by gimmicks, threats, and toys.

<comment><USER17> No hard data on this, but I assume that most teen pregnancies occur in demographics that are unlikely to care much for data visualizations. 77% of teen pregnancies are unplanned [1], so these parents did not "decide" to have a child - they were just not careful.

[1] [https://www.hhs.gov/ash/oah/adolescent-health- topics/reprodu...](https://www.hhs.gov/ash/oah/adolescent-health- topics/reproductive-health/teen-pregnancy/trends.html)

[Edited because I forgot to link the citation]

<comment><USER18> The argument is that they were not careful because the educational focuses was on the negative consequences rather than on how best to assess/mitigate the risk.

Teenagers in high risk demographics already know what sort of hassle having a baby is because of the example of peers or family members or neighbors. What they're much less familiar with is what they'd be giving up (ie all the life opportunities that they lack the experience to model as available options), and this naive discounting of the future distorts their risk calculus. Rather than working to increase their weighting of the known-negative outcome by saddling them with $700 Tamagotchis, it would probably be more effective to reduce the actual risk with greater focus on contraceptive methods etc.

</comment></comment></comment><comment><USER19> "Teen pregnancy prevention" is only seen as a universally good thing (as opposed to crypto-eugenic if practised on the right population) because you are encouraged to waste your fertile years in a cubicle / having anonymous Tinder hookups / building up your grad school CV.

Getting married & having a baby at 18 is significantly less costly than, say, getting a liberal arts degree & going to law school. The former allows you to do the schooling afterwards, if that's really your thing, plus you get to have a baby. The latter dramatically reduces your chance of ever reproducing, and is probably negative net payoff to boot.</comment>


Cornell CS/ORIE/ECE? Fluxion Capital is recruiting new analysts for Fall 2012 - <AUTHOR> http://fluxioncapital.com/

<comment><USER2> Quite possibly the WORST recruiting page I've ever seen.

</comment><comment><AUTHOR> Just a landing page - it's an on-campus investment club</comment>


Ask HN: How do I develop fanatical resolve? - <AUTHOR>

Whenever I read about the Greats, they all have this obsessive vigilance for their company and art. Can this quality be developed? I am good and hardworking, but do not have this quality, and find myself still binge-watching Netflix rather than getting shit done. I am unquestionably passionate, yet lack the Jobsian fervor that I need to be great. Any thoughts on this? Perhaps certain habits I should form? Any feedback is greatly appreciated. <comment><USER2> Your muses drop inspiration just as your head hits the pillow, but they don't manufacture an irresistible drive to create. In an emotional inspired burst, you leap into your project, only to peter out as the novelty wears off. "Fanatic" implies emotional involvement, but you've noticed that when the ardor cools you've got no impetus. And the thing you so lovingly begun turns into drudgery. Into work.

You're not, ex nihilo, going to create within yourself some sort of relentless will to create. Worthwhile endeavors are hard. Becoming more fit. Building a product or company. These goals aren't fully achieved in one inspired surge of energy. And our brains seem to be wired towards amusement after our basic needs are met. Intentionally doing hard things is the evolutionary equivalent of repeatedly touching a hot stove; your brain's going to keep telling you to knock it off.

So, you've got to take advantage of what we know about our brains to "trick" them into doing work. Here are a couple things to read that might help you figure out what "hack" will work for you:

1) [http://www.nytimes.com/2012/02/19/magazine/shopping- habits.h...](http://www.nytimes.com/2012/02/19/magazine/shopping- habits.html?pagewanted=print) is an article about shopping habits, that contains a couple of interesting gems about how companies actually do the same thing ("hack" your habits) in order to bring about desired consumer behaviour. It's adapted from the book: [http://charlesduhigg.com/the-power-of- habit/](http://charlesduhigg.com/the-power-of-habit/) which I haven't read but suspect just has many more examples.

2) [http://www.wired.com/magazine/2011/06/ff_feedbackloop/all/](http://www.wired.com/magazine/2011/06/ff_feedbackloop/all/). Figure out a positive feedback loop that you can take advantage of. For me, when I was working on a book, one thing I did was build a script that would count the words, make a note of the count in a journal, and post an update of my progress to my Facebook wall. I'd get encouraging comments from my FB friends, presto: positive feedback loop. Related: What gets measured improves. What gets measured and reported improves again. I'm not sure where I'd heard that quote, but its proven true for me.

3) Along those lines: "Don't break the chain". [http://lifehacker.com/5886128/how-seinfelds-productivity- sec...](http://lifehacker.com/5886128/how-seinfelds-productivity-secret-fixed- my-procrastination-problem).

Good luck. It's a lonely lot of work becoming productive.

<comment><USER3> Your first two paragraphs are the most beautifully written I've ever seen on HN. I would go on to spend more time reading [http://sonsofterra.com/](http://sonsofterra.com/), but you've inspired me to get back to work on my project.

</comment></comment><comment><USER4> The single best motivator for me is remembering that I'm going to die one day. I think often about the commencement speech Steve Jobs made in 2005. If you haven't seen it, I highly recommend it.

Here's a link: [http://www.youtube.com/watch?v=D1R-jKKp3NA](http://www.youtube.com/watch?v=D1R-jKKp3NA)

I still allow myself time to relax/slack off, but if I had intended to only watch a few episodes before getting down to working on something I'm passionate about, and then have the urge to just do the easy thing and keep watching instead of doing whatever I'd planned to do, I remember that my time is slowly running out and if I don't take steps to achieve my dreams now, then I will likely never achieve them before there's no time left.

This applies to everything in life, not just work. Travel, falling in love, learning new things--you name it--everything is affected by how limited your time is. Time and your body (there's a direct relationship between them) are the most limited resources you have, and even if you strike it rich you can never rewind the clock. This is what motivates me more than anything else to get shit done. On a related note, once you realize just how limited your time is, you realize how pointless it is to live your life for other people or be constrained by dogma. Anyway, at this point I'm just rehashing the speech, and Jobs says all this much better than I do. If you haven't seen it yet, go watch it. If you have seen it, go watch it again and listen very carefully to what he says.

<comment><USER4> One more thing:

I have a strong urge to not be the kind of person who tells people he's going to do something and then doesn't. So if I really want to make sure I accomplish something, what I do is tell a bunch of people about my goals and set a realistic date where I want to have met some certain metric, and then I ask them to ask me about about my progress on a regular basis. If I tell enough people, then usually at least one of them remembers to ask about every other week, and after awhile I'll go "shit, if I don't actually do this, I'm not going to reach my goal and everyone will know." It's basically manufacturing peer pressure for a positive purpose. It's really scary to do this (at least for me), but that's also what makes it effective.

</comment></comment><comment><USER5> I have found the opposite to be true. Good leaders of companies and workers are level headed, their energy is flat lined as opposed to spiky. They don't burnout.

Fanatical resolve sounds less than desirable, I'd far rather settle for 'consistent'.

If you're interested in building a company it will take several years to decades; take your time.

</comment><comment><USER3> Hopefully others can add insight to my findings, but it seems to me that when I sit down in the morning and do what I'm "supposed" to do, I find an unexpected reward is presented later in the day.

Yesterday, for instance, I sat down and coded for a few hours, when I could have been out drinking with friends. The surf looked crap, but I decided I wanted to get out for a surf just to get my head away from the code for a bit. Turned out to be a great and unexpected session. My small reward for doing my work.

</comment><comment><USER6> Get to be 70 and be on (or just over) the edge of the technical breakthrough you've been working toward more than full time for 15 years and part time for 30 years before that. Oh, wait. I guess that means I'd already found that fanatical resolve. :-)

Seriously, I think the only way is unhealthy emotional involvement.</comment>


The Solution to App Fatigue and Hitting the App Wall - <AUTHOR> http://blog.cloudbot.com/post/3765163892/the-solution-to-app-fatigue-and-hitting-the-app-wall

<comment><USER2> Or you could just not drink the kool aid of every tech fad that comes out?</comment>


Should HTML have a "max file size" attribute for input type=file? - <AUTHOR> http://discourse.specifiction.org/t/maxium-file-size-for-upload/885

<comment><USER2> No, I do not think this should be implemented. The proper way (in addition to server-side validation, of course) is to utilize JavaScript in order to verify the file's size. This solution also allows different maximum sizes for different file types as one example in the discussion shows. Using JavaScript also adds additional flexibility when trying to achieve custom error messages. In general, I think the HTML specification is getting quite bloated these days, but this is not the place to discuss this.

</comment><comment><USER3> I'm not sure this attribute makes sense. Yes you can specify a set of types to only allow but this is then used in the file system's native browser to simply filter files out and it clearly shows the user what it's looking for.

For file size there is no interface that shows you what your limit or acceptable range is. In this case how do you notify the user they're trying to upload more than they should? Do we then tie modals / messages to the file input to handle the cases where a user selects something too big?

At least right now you can handle all of this via JavaScript. I think that may make sense to continue versus adding additional attributes.

</comment><comment><USER4> I guess this wouldn't replace proper server side validation anyway, but it would be a nice addition.

<comment><AUTHOR> Yeah, exactly. It just prevents people from uploading ridiculously large files which have no hope of completing.

<comment><USER3> Well you can check file sizes in JavaScript before upload so you can do this already.

</comment></comment></comment><comment><USER5> This requires server-side validation _anyway_ , so I fail to see the point of it.

You just know some less-than-stellar web developer is going to use it and not use any proper server-side validation.</comment>


Show HN: UI-Editor, a Component Builder - <AUTHOR> https://github.com/imvetri/ui-editor#ui-editor <comment><AUTHOR> I created this tool to build components and generate framework specific code. It is not fully built yet. I am sharing it across to get feedbacks. I would like to continue working on it but I have lost track on how to take it forward. Appreciate your help.

Thanks, Vetri.

<comment><USER2> Documentation in text would be nice as would a non GPL 3 license. Can't touch GPL 3 code, too risky say the lawyers

<comment><AUTHOR> ok. thank you

<comment><USER2> It's hard to go back and look up things in videos. Copy & paste of examples too

<comment><AUTHOR> I created this [https://github.com/imvetri/ui-editor#step-by-step- tutorials-...](https://github.com/imvetri/ui-editor#step-by-step-tutorials--)

I would like to know what to do next if you could provide some suggestion.

</comment></comment></comment></comment></comment><comment><USER3> Demo seems broken on Firefox 73.

<comment><AUTHOR> Thanks for letting me know. Added to issues. I'm prioritising a minimal working version once the tool is fully functional I'll start with cross browser issues.

<comment><USER4> Also seems broken on Chrome 79 on Windows 10.</comment></comment></comment>


Real-world benchmarks - <AUTHOR> https://gist.github.com/geelen/6590305

<comment><USER2> > LEGEND: If you say "Node is close to the metal" 3x in a darkened bathroom, > Dennis Ritchie will appear and smack you in the back of the head.

\-- [https://twitter.com/NeckbeardHacker/status/33213881824747520...](https://twitter.com/NeckbeardHacker/status/332138818247475200)

(Original title was: "I knew NodeJS was close to the metal, but 4x haskell & 9x ruby Wow")

</comment><comment><USER3> Wow, we should probably rewrite the Linux kernel into this thing, it's blazing fast, and close to the metal too.</comment>


Project Meshnet Aims to Build a Censorship-free Alternative to the Internet - <AUTHOR> http://www.pcworld.com/article/259959/project_meshnet_aims_to_build_a_censorshipfree_alternative_to_the_internet.html

<comment><USER2> There is some similarity to Tor. How does it deal with ICANN tampering DNS records at the behest of big media, like it can do even without aid from SOPA, PIPA etc?

<comment><USER3> Read the CJDNS whitepaper [https://github.com/cjdelisle/cjdns/blob/master/rfcs/Whitepap...](https://github.com/cjdelisle/cjdns/blob/master/rfcs/Whitepaper.md)</comment></comment>


Tesla Motors inks $100M deal with Toyota - <AUTHOR> http://venturebeat.com/2011/07/20/tesla-toyota-100m-rav4-deal/ <comment><USER2> I realized recently that I know exactly Zero engineers working in the automotive industry.

Granted, I live in Houston, but I do know enough people that I could produce a stack of business cards for any other major industry. In fact, I know more people who build satellites, stealth fighters, or submarines than consumer vehicles.

What is the state of automotive R&D in this country anyway... has the industry been turned over to the marketing department wholesale or am I just in the wrong spot?

<comment><USER3> Maybe the problem is, they stopped making parts and focused on "system integration".

It sounds wonderful and high-level. Faced with hordes of competitors from overseas, people in developed economies tell themselves that they excel at higher order skills, like management and leadership, and big picture thinking. This is especially popular with managers. So things like "vison", "systems thinking" and "the big picture" become your priority, not the nuts and bolts.

But in reality, you become like Dell, rather than Intel. In a vertically integrated market; system builders are the kings, and parts makers are small players trying to get their foot in the door. In a horizontally integrated market; system builders compete on margins, while parts builders compete on quality. And competing on margins is a good way to make peanuts.

<comment><USER4> Disclaimer: I'm a software developer at GM.

That was once true.

Since the bailouts, the company has shifted it's focus back to quality. Many more components and parts are developed and manufactured in-house. See battery systems. With this comes an increase in part/component testing and validation, as well as complete control of quality and behavior of the component. IMO, this is the biggest factor in our quality improvements that have saved us boatloads in warranty costs.

The majority of R&D is done in SE Michigan, with additional small labs located around the world. We also do vehicle testing and controls development globally to validate our assumptions wrt climate/elevation/terrain changes. It's true that you won't meet many automotive engineers that live outside of Michigan.

<comment><USER2> Thanks for the reply -- interesting stuff.

</comment></comment></comment></comment><comment><USER5> This deal is being underwritten by U.S. taxpayers, who have given Tesla several hundred million dollars in loans (in exchange for zero equity). I suppose there's now a slightly better chance that some of those loans will actually get repaid...

<comment><USER6> How much did the taxpayers give the oil industry last year again? Pretty sure the number starts with a B, and >10 of them.

Meanwhile, I love the idea of us selling electric power trains to the Japanese, rather than them selling them to Detroit. Makes me feel like we're doing something right.

<comment><USER7> In the last six months, I shifted my loyalty to Toyota from lame US car companies. I respect Toyota -- as a maker of fantastic cars, a moderate- thinking and compensating long term business, and as a good employer of US citizens. US car manufactures make shitty cars, sell out their future for bonuses for their shitty executives, and treat their unionized employees like shit (and according to NPR more of a Toyota is built in the US than a US car).

I am proud to support Toyota, and the sooner the Big Three are forced to sell out out to "the japanese" the better.

<comment><USER8> For what it's worth, Toyota built a plant in my hometown and of the 4 people I know who got jobs there, all of them eventually quit due to the anti-union shenanigans pulled by management. They are a good company, but not without their flaws. (And to be fair, I'm not sure how much of this behavior was influenced by corporate policy vs. typical small town closemindedness.)

<comment><USER7> You know, I don't support unions as automatically as I used to. From my amateur interest in Toyota and industrial management, one of the major problems with unions isn't wages but inflexible work rules, seniority attached to certain very minutely defined jobs and no accompanying cross training/ rotation, and general bad attitude.

<comment><USER8> I've never worked for one, but it wasn't an ideological thing. If you worked with people for more than 6 months or so, you'd get your team broken up. If management found out that you were friends with a group of coworkers and were getting together outside of work, you'd get reassigned so none of you were working together. It was the harassment to prevent people from unionizing that that made it a bad working environment.

<comment><USER7> Yeah, that is sort of weird if it is like that. I don't have any personal experience at all, not even secondhand... but I know Toyota rotates people around all the time according to the books I am reading about them (which do have rose colored viewpoints). I hate to say it, but I have worked with production factory workers who would whine about anything -- having to do inventory, learn a new skill, meet a new person; I am a bit cynical about their complaints. Does "getting reassigned" == "harassment" ? maybe...

<comment><USER8> This was pretty specifically anti-union behavior, although obviously nothing was done that would generate any paper trail. I am sure there was some exaggeration due to human nature, but it is basically an open secret that large non-union shops will do just about anything to prevent unions from forming.

It may be different for line employees, the people I knew worked skilled trades, electrician, hvac, etc.

<comment><USER7> Interesting. I am not sure I blame them for fighting the unions, honestly, but there you go.

</comment></comment></comment></comment></comment></comment></comment></comment></comment><comment><USER9> Sensible move by Toyota considering it owned a 2.9% stake of Tesla as of last year.

</comment><comment><USER10> I love the Tesla cars and nearly twist my head off whenever I see one, but can't help from wondering if they will eventually be viewed in the future much as the Delorean is today. Without the epic collapse of the founder, of course, but purely due to economics.

<comment><USER11> You make a good point. If they go the route of just selling the technology to existing car companies, then it's very likely that they'll spend more time on those efforts than producing their own vehicles. If they can get the price on their cars to match that of the average vehicle, they'll be a staple for sure.

<comment><USER12> Remember that even with the Tesla roadster, they still pretty much only made the power train. The rest of the platform was basically licensed from Lotus.

[http://www.carsconcepthub.info/images/lotus- elise%20%281%29....](http://www.carsconcepthub.info/images/lotus- elise%20%281%29.jpg)

Notice the similarity?

<comment><USER13> They weren't getting much more than the shell from Lotus.

<comment><USER14> And chassis/space frame

</comment></comment></comment></comment></comment><comment><USER15> I remember reading the wired magazine article for this. Some people can actually benefit from an economy like this. You can buy things for a fraction of a price they were before. Although, that is a double edged sword. In this economy, your own money falls as well.</comment>


Ask HN: Who's going to Google I/O? - <AUTHOR>

Hoping to meet up with fellow HNers. <comment><USER2> I'll be there. Email me if you wanna meet up.</comment>


How just 30 machines beat a warehouse-sized supercomputer to set a new record - <AUTHOR> http://www.zdnet.com/article/how-just-30-machines-beat-a-warehouse-sized-supercomputer-to-set-a-new-world-record/ <comment><USER2> P100s are seriously shaking up cluster design. Student clusters are now hitting 30 teraflops with <10 nodes. [https://www.theregister.co.uk/AMP/2017/04/27/new_student_lin...](https://www.theregister.co.uk/AMP/2017/04/27/new_student_linpack_record/) Scores were hovering at 8-12 teraflops from 2013-2016.</comment>


Ask HN: Are there any legal issues with using Twitter style at/hash Tags? - <AUTHOR>

I'm working on a project and I wanted to use Twitter style inline @ and # tags and I was wondering is there any legal implications to that. As in has Twitter patented that? Is it even patentable?
As a side question, what do you guys think about inline tagging/referring. Is that good UX?
Thanks,
Drew <comment><USER2> Twitter didn't even really invent them. The # tag drew inspiration from IRC and the @ tag is pretty self explanatory.

</comment><comment><USER3> I think that hash tags are a great way to sort through information on a website (Especially if you can do some dual hashtag where you could have #Topic1 #Topic2, and it will return queries that only have both).

Not patented, they started in IRC channels.

</comment><comment><USER4> Polish Twitter clone called Blip uses them. ;)</comment>


Ask HN: What natural air-conditioning solutions are there? - <AUTHOR>

The Romans aparently had a natural air-conditioning solution:
http://www.thefarm.org/charities/i4at/surv/aircond.htm
Also, a mate reported that Madagascar has empty 'open' rooms on one side of the house to help with keeping things cool.
With everyone complaining about their office being too warm at the moment I wondered what solutions people have crazy or otherwise? <comment><USER2> Where I live in the Dordogne in France houses (and outbuildings) are traditionally built with high steeply sloped roofs to create an air space at the top of the house to collect the hot air in summer - allowing cooler air to fill the rooms below.

In addition we have external shutters on all of the windows and these are closed on the sunny side of the house. With an insect screen on the window you can the leave the window open as the shutters are not air tight so they allow a gently breeze to enter each room.

Also it is worth pointing out that the walls of my house are stone (60cm thick) and these act as a great heat sink.

It will probably hit 35C this afternoon but the house will remain cool.

</comment><comment><USER3> Persian windcatchers.

See <http://en.wikipedia.org/wiki/Windcatcher>

And they are huge, try to find pictures with humans to get an idea of the scale. One day I hope to make it to Yazd to see the real thing.

</comment><comment><USER4> Freezer ziplock bag full of ice to go around your neck will cool your core down quick. You can also just regularly goto the faucet and rinse your wrists and neck with cold water to help cool your body down as well. I live on the river, so I keep the windows open for the breeze and the blinds down to block sunlight. I've heard of constructing a water tank that fits to your windows, and what happens is the sun heats the water up over the course of the day, but still lets water in, and then at night when its cool outside, the windows maintain an even temperature releasing heat. I know some people do this in their kitchen windows using clear glass bottles filled with water stacked on top of eachother to fill the window.

</comment><comment><USER5> Buckminster Fuller [1] did quite a bit of research on natural cooling and figured out how to cool buildings using Berhoulli's principle [2]. Unfortunately, I am unable to find any good references online, so you may have to chase such information down in books. :)

[1] <http://en.wikipedia.org/wiki/Buckminster_Fuller>

[2] <http://en.wikipedia.org/wiki/Bernoullis_principle>

</comment><comment><USER6> Lots of plants, loads of them, all well watered.

Blinds down but windows open (if there is a breeze).

Dressing for the weather - looks of thin cotton. Shoes off. Drink lots of water.

Move somewhere cool ;)

</comment><comment><USER7> Not a form of AC necessarily but I know Chinese people put straw woven mats on chairs and on the floor to sit/sleep on when there's a lack of AC to help keep cool

</comment><comment><USER8> In dry climates Swamp Coolers <http://en.wikipedia.org/wiki/Swamp_cooler> work well.

</comment><comment><USER9> Girls waving large fans.</comment>


jQuery 1.5.2 Released - <AUTHOR> http://blog.jquery.com/2011/03/31/jquery-152-released/

<comment><USER3> Hey all! jQuery 1.5.2 was just a quick bug fix release that we wanted to get out while we work on jQuery 1.6 (first beta due out in a couple weeks).

If you're curious to see what's happening to make the upcoming release possible you can see our progress in the meeting notes of our weekly (public!) core dev meetings:

[https://docs.google.com/document/d/1MrLFvoxW7GMlH9KK- bwypn77...](https://docs.google.com/document/d/1MrLFvoxW7GMlH9KK- bwypn77cC98jUnz7sMW1rg_TP4/edit?hl=en#)

Also, if you want to see all the features/changes that were submitted for possible acceptance into jQuery 1.6 you can see them in our massive spreadsheet:

[https://spreadsheets.google.com/ccc?key=0AuWerG7Xqt-8dDcwNUl...](https://spreadsheets.google.com/ccc?key=0AuWerG7Xqt-8dDcwNUlSaWltOWJrNE5tOUlIbkVJbGc&hl=en&authkey=CIjOo7UK)

To overview our process: We collected feature/change proposals from the community at large for a few weeks in a Google Doc form. The jQuery core team and jQuery bug triage team (and some members of the jQuery UI team) each added their personal opinion on the features to the spreadsheet (linked above). We used that to form a rough consensus, ironed out the final details in a meeting (see the notes from the March 14th meeting). We're now pushing ahead on those nominated features and you can track our progress in the weekly status updates or, if you want to live on the edge, in #jquery-dev on irc.freenode.net.

It's actually a great time to get involved in contributing to the project - <USER2> highly recommend it!

<http://docs.jquery.com/Getting_Involved>

<comment><USER4> I'm really enjoying seeing more transparency coming from you guys. Not that you weren't before, but this kinda stuff is that much better.

Keep up the great work!

</comment></comment><comment><USER5> Anyone know who tracks the widest deployed version of jquery min on a CDN? I would think its 1.4.2 on google cdn ? Good info to know for a little page speedup as it will be cached in most folks browsers.

<comment><USER6> I would think it would be pretty difficult to tell which one is the 'most- cached' since the whole idea is to not hit the server ..

<comment><USER7> It's probably safe to say that the most downloaded is also the most cached.</comment></comment></comment>