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If you need to use this library, then you shouldn't use Tornado in general... unless most of your code is indeed asynchronous. This technique is slower than a webserver threadpool, so be careful.
Some background:

A/B testing is founded on statistics. You take Option A and Option B and see which one achieves more Goal C.

But you can't just look at the percent difference and decide that Option B must be better! Look, it has a higher percent Goal C! But that could be due to chance, so A/B tests employ tests of statistical significance to determine whether the test results are _probably_ chance or _probably_ reflect a genuine causal increase in Goal C.

For example, if you flip a coin four times, and get heads three of those times, without a statistical significance test you might conclude heads is 3x as likely to appear as tails. We know that's wrong, though- each side on a coin has a 50% chance of appearing face-up for each flip.

The flaw in this experiment is that we tried to extrapolate a result from a very small set of data. A statistical significance test would take these results and say "we have a <very small percent> confidence level that heads is more likely to come up, and doesn't just come up more often by chance".

If we flipped the coin 10,000 times instead, you'd get something pretty close to 50% heads and 50% tails, and your significance test would return a high confidence level that those numbers are accurate.

Short story long, you need lots of datapoints to determine whether an A/B test result is chance or an actual difference, and the smaller the difference between how Option A and Option B perform, the more datapoints you need to be confident they're actually different. Patrick's numbers are so close together that he'd need far more than 300 sales to reach the gold-standard 95% confidence level that there's actually a difference.
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A question (given that this is dated 2000).

What do folks think of Rule 42 (slide 18)? "Being first is more important than being best." Specifically in light of recent discussions about Instagram and 'being first' [1]

[1] http://news.ycombinator.com/item?id=3844820
Exactly. The problem with this and MacRuby is you're only really using the Ruby syntax. The idioms are still mostly the same, which IMO is what makes Ruby shine, not necessarily just the syntax.
Might be just as well to sniff the user agent.
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I think this is entirely depending on the attitude or mindset you have when approaching the teaching task, at least for technical subjects.

If you're trying things in a vacuum, do not get reviews from people in know of how things work, do not do research past "this seems to work for me, time to disseminate", you will probably be missing on a lot of content.

People who get to the task by actually forcing themselves to learn first, get some peer reviews, go straight to sources and take a broader mindset of "I have to get this right because it costs more time and energy to undo bad teaching than teaching in the first place" might do better. In fact, they might get the benefit of teaching while still having a fresh perspective on a given topic, something extremely lacking with some teaching material.
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Just because one can be smart, doesn't mean one has lost the chance to be stupid.
I find your statement

> Mutual Assured Destruction principle is the only reason for protracted peace at the global scale

very hard to believe. Do you have any source I could read that may change my mind ? For the moment I am a proponent of global nuclear disarmament, I don't have any source in english but the argument that draw me in was can be phrased as :

During the one true nuclear crisis, the Cuba missiles, Kennedy did not send the Air Force because the chance of getting nucleary hit, even "a little", was not 0%.
Still, the doctrine of Mutual Assured Destruction posits that one enemy must be sure to be completely destroyed.

So we have a doctrine that leads to enormous arsenals, yet the only data point we have shows it is probably not true, as a mere chance of getting a small hit was enough for Kennedy to back down.

Hence, our arsenal are, at best, far too huge. I furthermore believe that we would be better off with no nuclear weapon at all, but I wanted more info about your precise statement.
It's a 'standing wave'.
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You have a bunch of people either in the startup scene or very passionate about getting into it. These people don't want to hear about how their livelihood/passion may spontaneously combust one day. Then you have people who aren't involved and are (probably) jealous at least on some subconscious level, and people who legitimately believe the bubble exists. This makes for some heated (and usually nonconstructive) debates.
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Yeah, that's a pain, I'm not disputing that. I'm just disputing that this law makes "web analytics illegal".
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Can anybody share his/her self-made Anki DBs or recommend some good-quality ones? This looks to be of tremendous utility to other language learners, myself included (I'm mostly interested in English, French and German).
Imagine NASCAR with these batteries - Cars covered in solar panels. Drivers carefully timing their recharge pitstops to keep their weight down. Every fan in the stands has a big reflector to reflect sunlight at their favorite car.
"People often point out that the frothy tech startups of 2012 are fundamentally unlike the frothy tech startups of 1999..."

I've always thought it interesting how 1999 is always the benchmark people use, and never any of the years prior when the bubble was forming. People's logic seems to be "Until we meet or exceed the apex of the last bubble (ie, 1999), we don't need to worry."
Think of it as a replacement for Lua. Something you will be able to include as a scripting subsytem in most other languages.
You're right, and I think that's what my company will be doing, however: it's scary that there's a law against it and their advise is "break it, we probably won't care".
I've just started playing Windowsill and it's brilliant.
Check this out : http://www.screenr.com/BEg8

[Edit] Or just try it for yourself here : http://windosill.com/online/
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There's an "Automatically Add to iTunes" folder that'll do that, but it's still annoying to have to use one special folder instead of just pointing it at my regular download folder. I always forget that Apple added this. More here: http://lifehacker.com/5356619/itunes-finally-adds-watched-fo...
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Agreed. I'm decent with languages (native English speaker, C1 German, B2 French, B1 Mandarin and Spanish, can fake my way through common travel situations in Moroccan Arabic and a couple other African languages). C1 in 5 months sounds wildly optimistic, even with immersion. I wouldn't consider myself to possess C1 French despite a couple years of classes in school and maybe a year of immersion broken into a few chunks. My German fluency came from ~10 years of classes, including several college classes in other subjects that were taught in German.

For that matter, I know non-native english speakers who don't have C1 fluency despite living in the US and UK for more than 20 years, and not for lack of trying. Learning languages is hard for almost everyone, and for a reasonable portion of the population, it's really hard.
In my hypothetical, the store isn't being dishonest or deceptive, the manufacturer is. And in my hypothetical the store didn't previously sell A. That seems to be basically the scenario Best Buy is in. So I'm not sure what you're trying to accomplishing with your new hypothetical.
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The US are claiming legal dominion* over all domains under a large number of TLD's (.com, .org, etc.). New TLD's may help mitigate that.

*http://www.wired.com/threatlevel/2012/03/feds-seize-foreign-...

"If you just add one character to the length of the domain name you have 26 times as many names you can choose from. There's no shortage."

True, but TLD's like .pepsi and .HTC are a lot easier to remember than random combinations of letter.
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if you do this, e.g. sin89 x 2^-1.44 x sin89 it will know what you are up to and firstly blot out your sin89 and require an estimate for the 2^-1.44 ...! (and if it accepts your estimate for this (e.g. 0.3 will be fine) it will then let you do you x sin...
I don't know... Data in itself is not valuable, you have to be able to monetize it.

How much is it worth to know everything about a 20-something buried under a mountain of student loans, who is not inclined to buy expensive furniture, stereo systems, or cars anytime soon? Hundreds of dollars? Really? Add to that that the tech trendsetters and early adopters are not enthusiastic supporters of facebook anymore and seem ready to jump on the next big thing.

When I read the story yesterday about the company wishing to mine data how many people have sex in the bathroom after hooking up through the site, I figured this whole obsessive data collection thing has jumped the shark a bit.

Maybe it makes sense for the moment - as in the absence of revenues, user profiles attracts VC - but it does remind me a lot of the bubble in early 2000.
(I've seen that entry, I agree but its probably very hard to do it).

To me as well, I even started building my service.

But after programming some Python/Clojure, one feels kinda silly when having to write code like

getId
getName
getAge

for all DB columns - since in the dynamic languages its so easy to get a key from a dynamically created dictionary with the database columns:

(:age row) (Clojure)

Perhaps should just stop whining about it and just type the fucking getters/setters.
foresight.js looks more interesting since it takes the perceived connection speed into account when deciding to serve up 2x images. https://github.com/adamdbradley/foresight.js
So you think that what kept Stalin from marching into West Germany in the 1950s was a respect for the principle of freedom and independence in the Federal republic? Or perhaps he feared the awesome military capabilities of a conventional British army of the Rhine?

And similarly Washington didn't start a war with the USSR because it believed in "live and let live" with regards to world communism.
M.A.D. only works if all of those involved are rational actors with high levels of control and clear geographic definitions.

If every country had nukes then you only need one country to have a civil war and things could get rather messy.

Imagine what would happen in the US, for example, if Washington went bankrupt. Something like that could lead to civil war, which raises the thought of what a nuclear civil war might look like, could you have an independent theologically-apocalyptic nuclear armed Texas spitting bible verses and megaton warheads at any heathens, for instance?
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Many sites load Facebook's script synchronously [0]. My point is that developers should be aware of this issue, not that Facebook have done anything wrong. For example, Twitter and Google Analytics are often included synchronously [1].

[0] http://www.stevesouders.com/blog/2011/10/13/frontend-spof-su...
[1] http://www.stevesouders.com/blog/2012/03/28/frontend-spof-in...
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The average vocabulary of the average person in their NATIVE TONGUE is just over 3500 words (it varies a lot from culture to culture).

The average vocabulary of a University Graduate in the Arts is 10-12000 words. In the sciences it varies greatly, chemistry, biology and medicine being the most demanding at >15,000.

Someone with a vocabulary of 20-25000 words would be highly educated or very well read, or an specialist in a field.

If you have a Japanese vocabulary of 8000 words, you already have a bigger vocabulary than 74.13% of the population (if you understand what that percentage represents, you already have a larger vocabulary than the majority of people).
I'm having a hard time thinking of "information that would keep one country from launching nuclear weapons at another". Unless that information was "this country is planning a nuclear strike", and then the threat of retaliation could very well save lives.

Could you give me an example of what you mean?
I like the idea however there was some discussion that Safari on the new iPad downsamples the images even if they are at retina resolutions. I have not looked at the code however I hope that this issue is addressed.
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Well to be fair, it's been several years since I've heard anyone call an SUV a Jeep (other than a Jeep), a tissue a Kleenex, or a copy machine a Xerox. But Zipper was a brand name?? What the hell is the generic product name for a zipper?
So if I understand that correctly, the reason other providers seem to provide a lot more bandwidth per subscriber dollar (ex. my Linode has 200G transfer/month at $19.95) is most of their customers probably don't push the pipe into an overage so they're basically overselling the bandwidth?

p.s. I just noticed your $20 plan provides double the RAM and 4gb more disk than my Linode... i'll do a little more research but I might just switch since I don't get anywhere near that bandwidth cap.
I'd like to see some before-and-after examples of Python code that's been rewritten to take advantage of blocks using this module.
I work for a help-desk part of IBM. We use IE6. :(
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I heard that alot, but haven't actually seen that proven yet.

It's a very good excuse to force people on improving their HTML and website speed, but I still would like to see the impact of the Google organic results after only speed improvement and bad HTML fixes.
Indeed. However if this ends up being a peer to peer type project, then it doesn't matter how the government reacts to it. Embrace it, try to stifle it, doesn't matter.

A network of GlobaLeaks "nodes" makes the entire process infinitely effectively impossible to stifle at any level, unless you go the route of shutting off the internet as some regimes have done. And even then information finds a way out.

I love this idea.
This appeared to be "as designed" in safari. The only solution I'm currently aware of is to save images as progressive jpgs. This gets around the limitation imposed by Apple.
Like he said. If you are going to be second, you have to bring something really great to the table, something that itself has value, and replaces the value of the thing you are leaving. To use an example: Sean Parker said Facebook should never have won, considering MySpace's network effect at its height. Facebook was great: it had its own value, but it still had to replace MySpace's massive network effect. Luckily, due to MySpace's lack of innovation at that time, its own value plummeted, making it easier for Facebook to rise up above it.

That's what I would say. Being first is good, because you can capture the market, hence making it difficult for users to switch.
I enjoyed it, but.. ConsumerNews.
My phone behaviour is the same as yours (<30 min call time/month; lots of data usage). I see your point. My opinion is slightly different: turn off data connection and I'll leave my phone home; turn off voice and I'll happily tote the phone around and use it all day. So for me, voice is the accessory.

What you describe is how to reach other people (as necessitated by them), not your own behaviour.
Seems like a good way to make your code harder to read and harder to debug.
The Galaxy Nexus uses pentile subpixel rendering, which is a system with slightly controversial ways of determining the PPI.
8 month ago: http://news.ycombinator.com/item?id=2831455 (65 comments)
If VeriSign or any of the other US registrars ends up with control over the new TLD, the US has de facto control over them anyways. All it takes is some government lackey with a piece of paper and VS will bend over backwards for them.
Having good names for functions and variables makes even assembly readable.

Names: what a great idea.
In fact, they should sue all programmers who ever made a zip() function for trademark violations!

(in fact, even more confusingly, most zip() functions don't interleave elements, like zippers do, but return a sequence of paired tuples - this, naturally, gives Zippers a bad name who wants their pants to pairwise join)
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What other features can you recommend for this?
I've understood that technically the main idea of "retina" is that the physical display pixels no longer map one-to-one with the logical user interface (CSS) pixels. Instead, the retina display appears as a virtual low-resolution screen that is able to utilize higher-resolution images (which would otherwise be scaled down).

So in this sense, I would claim there is a clear technical difference between just higher-resolution screens (more pixels) and retina displays (same pixels but "better looking").

To me this virtualization of pixels seems like a good idea, since the majority of web pages assume pixels have certain DPI range. Operating systems like OSX treat pixels as floats anyway, so if you need subpixel accuracy, it's still possible.
As an example, let's say one country poisoned the leader of another country 20 years ago and covered it up. Exposing that information could start a war.

If it's the right action to leak that information is entirely dependent on your moral philosophy. Utilitarians would generally want to keep it a secret, though.
It's great design I think. It attracts exactly the kind of people they want as customers.
Not to make this into a 'my language is better than yours' debate because we all know how annoying those are, but imo once one has used enough languages, one realizes that all of them have good and bad things. Like you I'm mostly a C++ developer nowadays, and C++ has plenty of warts, but like PHP, the advantages outweigh the disadvantages (for me). Now one can say that I picked the two worst languages as examples (and to base my career on), and certainly PHP and C++ are the two languages that are most crapped upon nowadays, but at the same time they're also the most popular ones. Other languages that I've used all show not so nice aspects, even after not all that intensive use.

To take your Python example: I recently wrote a small Python application because in that context, Python was the obvious choice. Turns out that instantiating an object of a variable class name is quite non-intuitive (I don't even remember how it was done, it was typically something you need to look up every time you use, much like the syntax of calling a member function through a function pointer in C++ - I looked that up so often that I know by heart now that it's on page 219 of the 2nd edition of the Stroustrup - but I disgress...). Whereas in PHP it's simply $classname = 'AClass'; $a = new $classname(); . Completely obvious and in line with the way everything else works in PHP.

Again this is not to diss Python, I like some of the things of it that it does differently than other languages and there are many people doing great things with it. It may even well be that in the aggregate, Python has less 'annoyances' or rough parts than PHP, I don't know. It's just an example to illustrate that things are never black or white, and IMO the whole 'I hate XYZ' is widely overblown, because really, life is too short to get one's panties in a bunch over a stupid programming language, of all things. Sure I am annoyed with bad tools, but hating them and spending hours and hours crusading against them... That's the ultimate waste of time, im (maybe not even so h) o.
While certainly very cool, this is unfortunately using an unofficial sprite spec[1].

There's plenty of awesome things being done with the official specifications though, like this minesweeper clone: http://0x10co.de/lqnit and this simple raycaster: http://0x10co.de/o3xss

Vim is also in the process of being ported: https://github.com/DanielRapp/0xVim

[1] http://fingswotidun.com/dcpu16/sprites.txt
+1. there's nothing like using your GitHub account as your resume to let potential employers know you're prepared to work for free.
Probably. When going in and out of UK I rarely see a Border Agent, I just scan my passport (electronic) and an automatic door opens.
Interesting, but I'm having a hard time seeing how this syntax saves me much in terms of code size and complexity compared to just wrapping the code blocks into named functions and passing those.
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This is a terrible idea, and ruby used the wrong implementation. If you want this behaviour, you should just define a higher order function/decorator, and put your "block" in its own function. This is a case where there should be only one way to do it.
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A great many 20-somethings ARE in fact inclined to buy expensive furniture, stereo systems and cars.

Whether they should be or not, in your and my opinion, is not germane to the value that they have because of the fact that they are.
Can someone give me an example where using a code block is better than using a simple function? And is the added complexity and loss of readability worth it?
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One of my flights from the US routed through Schiphol then I entered Spain without going through customs or getting my passport stamped. I'm not really sure what happened.
I have worked with a number of social media consultants and have a couple things to mention that are worth keeping in mind. 1:Pay attention to how the "expert" talks about social media. They should be talking about how it is just a channel...not an end in itself. Granted, it is a powerful channel with some unique characteristics. They should be asking you questions about what type of value or messaging your customers might want to hear about in that channel. 2. Think about whether or not you can do this on your own. You would be surprised to know how much impact the owners of a business can have when they handle some of the social media strategy themselves. If you just focus on one or two channels it doesn't take any time at all. Once an owner or team member learns about how the channels work, they are the best ones to see the unique opportunities for their business.
You can always make use of APL if you don't like typing.