skysight-inc/HackerNews huggingface dataset:
Because airspeed is relative to the speed of the air around you (not relative to your position on the earth).

The pitot tubes (which caused the initial problem by icing over) are there to determine exactly that.
Quite a long time. I didn't think I could get a price this low intially, but if you have a lot of good sources, anything is possible eventually :)
You honestly think bog-standard consumers are going to make up for the hundreds of millions of dollars they're likely to lose from large institutional customers who can no longer purchase Apple products?

Okay...
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I think the assumption is that you can extend the life of older laptops. I can get a new $25 battery on amazon for my 4 year old Dell laptop. Not sure what the comparable price would be for apple.
If you treat twitter like a big mailbox, things will work "ok". It's not the worst approach ever, that's for certain. But end-user perceptible performance would be a fraction of what twitter has today.

P.S. How many images does twitter serve up per day at present? That's a tad more than 160 characters of data.
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Agreed. Probably was a worthless comment.
Yeah. So why you didn't earned bilions of dolars on new, great e-mail clients? Maybe it's not what people needs, huh?
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Adserving is not really static. Cachebusters are named so for good reason. Nowadays ad server developers are clever enough to separate click tracking and impression tracking (the non-Enterprise version of OpenX still deserves a lot of ಠ_ಠ though).

In an RTB environment, there is an additional constraint of having to serve up your ad (or decision) within 60ms (Google ADX sets a hard limit of 80ms), and the fastest best bid wins.

I don't think that's a less hard problem compared to Twitter, especially at high volumes. You can't just say "scale sideward!".

That said, the first link was totally misleading. I was actually quite shocked to see that Twitter only had 42M uniques per month, because a typical ad network does a lot more

EDIT: ah.. 15B requests/day makes more sense. Wtf is with the wrong stats?
Hi ajays, sorry for the confusion; we only verified flights by hand for this contest because it was somewhat contentious. With other contests, we let the contest holder rate/vet entries. If a flight hacker repeatedly enters bogus flights, we would deal with them. But that hasn't happened yet. It's in everyone's interests to spend time posting legitimate flights.

Right now, SFO to LAS isn't an optimal route for Flightfox. This will change very soon, but right now price is key and if you already know short domestic routes well, there's less chance we can help. In the near future, we'll capitalize on non-financial value of flights. This is really where we'll innovate.

If you aren't satisfied, for whatever reason, we offer a full refund. You generally need to ask for a refund within three days because we auto-award contests if they're abandoned. Our theory is that if you're not happy, you deserve your money back.

As for your last question about docs, we tend to leave that in the hands of the traveler. That should change soon as we build out the site (it's still very early days). We want Flightfox to be your one-stop-shop for flights, including all non-price info and all the tips and tricks that will make flying a much better experience.
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Is this how he really said it, or was the author paraphrasing?
I disagree. I don't think many companies that have 1000 computers would do this for $2/mo per node. That's like $22,000, also known as a rounding error for those kinds of companies. Besides, those companies tend to frown on these suspect applications.
»You should only do 3 things: talk to users, and slip, and slide.« https://makr.io/p/1415
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I assume it provides calories burnt is there way it can predict how soon user will loose the extra fat given the exercise schedule ? is there a way to create list of user's Facebook friend who are using this App and provide how they are performing ?
Academia is rife with competition. As they say, the battles are so fierce because the stakes are so small.

The open source community and Wikipedia are great examples of cooperation.

The biggest advances in business are usually by people who are completely focused on customer needs and ignore competition (google up until their google+ fascination, Elon musk, apple prior to android's success. Note how google hasn't made any advances from their competition with Facebook, and how Apple hasnt advanced the iPhone much since they started competing with Android).
Browsers were built around the idea of web pages, not web apps. The security model works for web pages but precludes powerful web apps. There needs to be a way for a user to grant UDP, TCP or POSIX power to a web app, because WebSockets are not TCP, and IndexedDB is not POSIX and never can be. Just UDP, TCP and POSIX and we're done. Let the community build everything better and faster on top.
That's one way to spend the investor's money... ;-)
From what I understand, many government agencies and administrations require that a certain percentage of their computers comply with EPEAT standards. According to the article, SF requires it for all of there computers, so this is really just an administrative decision to keep within previously established guidelines, and has nothing to do with self-importance.
I can't speak for the grandparent but my approach has developed slowly into:

1) Consistent but evolving paradigms. In other words, let's not be static, let's keep most change happening relatively slowly. But let's review and try to fix problems as they happen, cleaning old code slowly and continuously.

2) Try to document everything to at least a basic extent.

3) Let the documentation practices evolve. Don't try to document too much too soon. Start out with a basic level. As the project matures you will have a better idea of what needs more documentation and you can spend your time on the areas that help.

4) Don't underestimate person to person mentoring.
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We are using the AdWords API to push new campaigns into adcore and change bid prices based on conversions that we channel directly from the user's AdWords account.

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I shudder to think what my programming experience would be if the other layers in the stack (PC hardware, Unix, TCP/IP, etc.) were built the same way.

But it is!!

I'd speculate you just don't know it as well as you know web programming.

PC hardware.. do I really need to rehash the whole "the x86 architecture is horrible compared to Alpha/ARM/68000" discussion?

Unix.. The original "Worse is Better"[1] essay was written about how Unix beat Lisp machines because it was worse!

TCP/IP.. Well, there's that whole IPv6 thing where they try to fix some of the problems with IP[2]. Even that ignores many of the fundamental problems, though.

All software is hacky when you get close enough. Once it has been around long enough the terrible corners get broken off and people get used to the problems, and can't imagine another way.

[1] http://dreamsongs.com/WorseIsBetter.html

[2] http://en.wikipedia.org/wiki/IPv6
Hi martin,

The only registration options are 1) becoming a customer, or 2) becoming an expert. There's no advantage to registering because only customers can see flight details for their contests and only experts can post flight options. Otherwise, what you see as a guest is all there is.

This will of course change as we build out the site, but right now it's just a one-trick-pony.
6 to 12 weeks in advance according to this reservation agent.

"IAMA Delta/KLM/Air France reservation agent that knows all the tricks to booking low fares and award tickets AMA"
http://www.reddit.com/comments/v82rz/c524yi7/?sort=best
because... facebook? twitter? colour.com? (what happened to them, anyhow?) Drop.io? I mean, that one is a pretty nifty weekend project, but ten million? come now. that's pretty silly.

I mean, much like drop.io, almost all of those companies have some value. Even facebook is worth something, it's just, well, not worth 60 billion or whatever it's selling for now. I mean, yeah, they do have the userbase (right now) to beyond what google has done to advertising... but damn, that's hard to do. And I don't think that Facebook has the deep understanding that google has that if people start thinking of them as creepy, they are dead. (I mean, I think google has the same problems as an autistic guy at a party; google /understands/ that being creepy is bad... but google doesn't have a good understanding of what creepy is. Facebook is the guy that read some "fast seduction" crap and is now proud of being a total asshole. )

I mean, I think I understand why google can make so much money off advertising and (very related) why people think facebook can make so much more; See, I just bought some advertising in Mountain View Safeway stores. Go to the mountain view safeway and you will see green on black prgmr.com logos on the dividers you place between your food, instead of the usual pictures of real-estate agents. I mean, all the people I know at google have talked to me about it, and they thought it was cool, but I've been talking about this for a while, so I don't know if they noticed it because they know me or what. Figuring out the effectiveness of meatspace advertising is difficult. If i bought ads on google, I'd be able to easily track how many customers I got per dollar, right? Of course, anyone would be willing to pay more for advertising if they knew what they were getting out of it; if you give me customers and I make $10 off each customer, what's wrong with giving you $5? heck, I could give you $9.

Problem is, I don't think that online advertising is as traceable as you think. I mean, sure, I know that guy that just signed up clicked on to my site through a google adwords ad, right? but you don't buy something the first time you hear about it. Maybe that guy saw a blog about me last month? the google adwords link might have just been more convenient for him than the organic search results.

I think that online advertising, in general, is overpriced because of this.

I understand that the value proposition of facebook is that they (potentially) can track buyers better. that blog you read about me last month? probably had a facebook 'like' button. Maybe they could then use that to better measure my actual advertising returns?

The biggest problem I see with that proposition is, well, that's a hard problem to solve at all... and not only do they need to solve it, they need to solve it and simplify the results down to the point where your average MBA can understand them.
Any thoughts for other targets? I'd love to see this for TV Tropes.
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I think inplicitly Kay is talking about personal computing, not servers, and that in isolation is a very narrow perspective. But following his thinking for a moment: does a 'PC' need VMs, ZFS and dtrace? Apple has shown that, by removing many things that seemed essential, like a user-visible file system, you can build a personal computer that appeals to a lot of people. I firmly believe this is not the right tradeoff to make, even for personal computing in general, but people are throwing loads of money at them...
Very cool! I wish we didn't need humans to find flight tickets, though. Hipmunk is getting pretty good, but I always end up tweaking the itinerary manually. Seems such a simple problem (except this particular one, which is NP-complete)
Another key difference is that email users generally contribute directly to their provider's infrastructure costs in providing email as a service. Email infrastructure (and the user experience) is fragmented, and global funding generally scales with global load.

Instead twitter must monetize via advertising of some form, and so the percentage of folks who do not respond to ads acts as a really strong factor in your cost calculations. In this sense, email software has it easy, and can be extremely wasteful in the resources it consumes.

It's not just that the availability expectations of twitter are higher than email, it's also that the economic base of the infrastructure is far more sparse.
You're wrong about a few things, but for now I'll just pick on one.

You do realise that the 'IB' in LIBOR stands for 'inter-bank'? The LIBOR rate has no bearing on the cost of a sovereign government's cost of funds - e.g. in US, treasury bills. The spread between them can be quite volatile (http://en.wikipedia.org/wiki/TED_spread). In short - governments don't lend or borrow at LIBOR - that's the point of having LIBOR in the first place.
Facilities management is the worst part of "cloud" services. Getting this outsourced for low/no cost is brilliant. Check out the OnAPP CDN implementation.

Please provide a standardish xen/kvm/vmware/vagrent client image. Being win32 exe only is probably costing you a lot of resource provides (like me). Clients running xen/kvm/vmware are also more likely to be providing higher value resources, like a colo'd host.

Move your API to a different (sub)domain ASAP. At some point you'll need to change your DNS architecture. Having your API tied to your zone apex is going to cause no end of grief. If it's in a (sub)domain you can easily delegate control to another authoritative name server. You might want to use a directional DNS product, CNAME to another resource, add another product api, add another API endpoint, etc.

Provide some sort of initialization hook. Every node I launch should be able to auto configure my stack without a "push" action, ssh or otherwise. I much prefer when each node can bootstrap and poll my instance/config management stack. For example EC2 provides this functionality through the UserData param of RunInstances.

"Sign in" doesn't have an option or link to "Sign up". From the docs I had to go back to the home page to find the sign up.

Support payment other than credit card. Paypal etc is nice in that I can create a balance without extending as much trust to an unknown party.

Don't get suckered in to providing 1:1 IPv4 with your proxy model. If the product's successful you'll quickly discover that even a /16 is expensive/unpossible. A 1:1 mapping with IPv6 is operationally plausible. As a bonus you'll get PR for a "shiny" feature.

Stay away domU egressing through the dom0 IPv4 for now. I guarantee you'll attract bad actors. A chinese gambling/porn site hosted on those domUs is going get DDOS'd all the little long day. If that takes out the dom0 internet connectivity you'll have a revenue generating customer who's upset.

Terminate long running domU instances. You can use this to shape customer expectations about the ephemeral nature of your product. Expose this to the instance owner the same way as a dom0 going offline. Try something like max(mean dom0 availability || 12 hours) + weighted random to get each domUs lifetime.

Provide a way to request & inspect network locality or latency. Three use case here I think. 1) Launch instances near $foo. Get decreased latency to a centralized endpoint, like a scheduler. 2) What is the location of $instance. I can determine the nearest S3 region for faster GET/PUTs. 3) Launch instances within $n ms of each other. If instances have shared state or messages during compute phase this can increase throughput
I just hope that the investment will not force Github to change their revenue model. The current private hosting model seems quite adequate. Especially, I hope they won't become the next Geeknet (http://investors.geek.net/) where there are more advertising on the page than hosted FLOSS projects.
So on the one side we have the Buy Your Own Device* (BYOD) trend and on the other side we have stuff bought with public funds. Guess what - people will bring their own Macs, iPads etc and thus are exempted from the EPEAT rule - and the city saves money. Win-win? Well, except for the environment, but hey ...

(*) I refuse to call it Bring your own device. This trend really is about moving investments from the company to the work force. It's effectively workers paying fro their job - and that is so wrong ...
If they reinvented what Engelbart, did we'd be way ahead of where we are now.

I give you http://www.dougengelbart.org/about/hyperscope.html, implemented in 2006 on that horrible web thing Kay complains about. So there is that...
We have allowed markets to evolve in ways that make supervision of markets almost impossible.

This reminds me of the big monolithic app vs small services debate. A some point an app becomes harder and harder to break out Into testable pieces, becomes Interdependant and complex
For those hoping to review the actual research paper which is otherwise chastity-belted away behind Elsevier's very tall paywall:

http://personalpages.manchester.ac.uk/staff/alex.wood/hope_e...
But === is the other equals, not the equals.

Also, that only helps in boolean contexts, not with any function calls.
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It's a pretty stupid trend too. Let's face it, the best programmers will learn "this" framework quickly, get up to speed etc. Not only that but the programmers you really want to hire are going to be those who love learning, thinking, and critiquing their own code, not specialists in Framework X NG.

It seems to me that a better approach would be to put new hires into code maintenance first with a mentor who can help them get up to speed.....

But most of us know that HR departments are not always the best judges of talent.
Hiring you say.
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In fairness, Apple produces luxury products, and you can pretty much always get a cheaper version. (yes, the cheaper versions of an iPad were not so comparable, but you could have used a laptop) It's not unreasonable for a government organisation not to furnish it's staff with such treats.
Could have been me, I drive an old(ish) Toyota, but I would have asked you about 280 North. So it must have been someone else.

We are still in beta and so we usually have a backup driver, often one of us, who'll go and pickup customers if there is no taxi nearby. It's been quite interesting meeting people this way. I think I have had 5 "office hours" with Justin Kan this way :)
1) I didn't ..
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Apparently another Twitter engineer says it's doing 23M/s

"23 million queries per second with zero fucks given"

https://twitter.com/timtrueman/status/222793786345013248
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While I appreciate getting my vacations paid like that, the article shows a bit how Americans vs other continents see the vacations.

Here in Europe the only people I know that dare to have any contact with their company during vacations are usually labeled as workaholic.

We appreciate our 22-30 days vacations, without any contact with the employer while enjoying friends and family.
No it won't, because Newsgrape is using canonical links - this means that you can choose in the plugin setup where your content should be found, on the blog OR on Newsgrape!
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"You can't go to heaven unless you're baptized." Actually, no. Perhaps if you are Roman Catholic (and even then that's questionable); Evangelical Christians either believe that you don't do anything to get to heaven and Jesus saves you, or you choose to believe that Jesus Christ died as one perfect sacrifice for the forgiveness of those who follow Jesus.

You may not agree, but I'm pointing out that the statement by Kay is pretty inaccruate.
One of my views is that you should figure out what you want to make before you figure out what you want to learn. Once you have a functional idea of what you are doing, then it is easier to pick something similar, or look to library repositories (CPAN, gems, etc) and decide what you want to do.

If you aren't in a tech hotspot and you aren't chasing jobs, it doesn't matter what you learn. It matters what you make and how you can sell yourself.
The article had all Buzz words(Positive sense) except Python.
My issues with dropbox is not storage and price (I'm happy to pay not to have all my data with 1 provider), but speed.

I recently was in Greece and added 5GB of photos to my Dropbox so that if I had my camera stolen (or left it accidentally on a bar table) that I wouldn't lose the photos.

The problem was that the photos only uploaded at a rate of around 50kbps to 70kbps from the hotel (wired connection).

Fair enough... must be hotel or local internet access.

Frustrated at the speed I tried a local internet cafe... same speed.

I didn't actually manage to get all of the photos uploaded and when I was back in the UK I plugged in and they continued to upload at the same rate. Even though I have a 10MB uplink here.

I ran some quick tests uploading large files to a few boxes I have in different places, and all achieved at least half a meg upload speed. Dropbox stubbornly remained on less than 100kbps.

I'd tried unchecking the "Limit upload rate" both whilst in Greecen and in the UK, to no avail. Not that I would spend more time on this than it needed, I'd already made a second copy of my photos by copying them to the laptop.

Before this trip I hadn't prioritised upload speed for a cloud storage provider, now I would.

I'm fine paying twice what Google charge, but still want 2 things more than anything:

1) Client side encryption of all non-public, non-shared files.

2) Faster upload speed.
A nice service, but I'd like to have some idea of the pricing before I sign in / start loading pictures.

I also agree that the site loads too slowly.
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I fully agree with him.

The web was designed for reading documents not to try to shoehorn an operating system into the browser.

Thankfully the mobile world is bringing back the desktop applications concept, while using the network for communication protocols as it is supposed to be.
I said the problem was not the content, but the tone.

I stand by that.
And yet another key difference is that there are few email server installations that support half a billion users. Saying that the scaling problem is "solved" because all you have to do is copy, say, gmail, is kind of silly.
Are you talking about 15B vs. the visits chart I linked? If so, the 15B number comes from API calls, which do not have to happen through the website (think of all the Twitter clients).