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gujk

286 karma · joined October 18, 2011

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gujk··on Solving ITA's Word Numbers Puzzle
Print "e"

is even faster, but also missed the point.

gujk··on 2011: The Year the Free Ride Died
Ads are not the only model for providing free rides. Other Sustainable models exist:

Peer balancining: producers earn free credits for consumption. This is how Internet backbone peering and Team Fortress 2 work.

Freemium, or light users are too cheap to meter, while heavy users pay. This powered Zynga's IPO and many prosumer niches like Photography and web analytics.

Open core with professional services for customization or support (a mix of Freemium and free software). Cloudera.

gujk··on 2011: The Year the Free Ride Died
How is Facebook different from telephone service, or USPS, or an ISP, under your analysis?

(Sidenote: USPS actually is ad-supported by bulk mail, and "heavy users subsidized" by parcel post. First class letter postage is really a nominal fee to eliminate DOS and DDOS attacks. )

gujk··on The coming retail apocalypse: some axioms
Maybe you aren't giving Amazon the credit they deserve. MLP is huge in the hipster geek set that frequents HN. Cf http://www.google.com/m?q=my+little+brony
gujk··on The coming retail apocalypse: some axioms
When I hear an odd conclusion with no evidence, I usually disregard the conclusion, not infer the existence of fascinating undetected evidence.
gujk··on Elon Musk says he will put millions of people on Mars
Of course Elon Musk built his own character around Tony Stark of the comics, so the development is circular.
gujk··on Elon Musk says he will put millions of people on Mars
Who wants to live in a world where the rules of life stipulate that only one person can meet the definition of success?
gujk··on VW deactivates employee email outside working hours
I recently last sentence is social democracy in a. nutshell.
gujk··on GoDaddy is default registrar for Google Apps Domains
SOPA gives all siezed domains to godaddy. It is corporate welfare for them.
gujk··on This is a Facebook-free Zone
Up next: red-octothorpe-free zones.
gujk··on Did anybody solve this?
It also works with a as 7.
gujk··on Amazon Builds World’s Fastest Nonexistent Supercomputer
At the that scale, CPU and developer time are mostly orthogonal. If you need to crunch 1000x more numbers, you won't be able to program your way out of the problem. If your code is 1000x inefficient, it should be easy to optimize a bit. If you really need 1000 machines for just one hour, setup costs dwarf compute costs. If you need 1000 machines for a year, you will need someone to administer the work and wrangle the data.
gujk··on Looking for a Place to Die
What does your scale mean? Paying nearly nothing to get to -80 is a great deal compared to speculative painful expensive surgeries and drugs.
gujk··on How Facebook Is Selling Your Timeline to Advertisers
Would you accept a free blog, email, photo album, and realtime chat software, with Web and mobile cliens, hosted in the cloud?

OK.

gujk··on Why we built a 40TB photo server in-house instead of using S3
Amazon fails over data centers at least once a year in fire drill testing. Amazon has more backups, testing, and monitoring than 99.9% of small or midsized organizations.
gujk··on Why we built a 40TB photo server in-house instead of using S3
My company's data center has suffered a fire at least once in the past 5 years.
gujk··on Petzl comes out against SOPA, after appearing on the list of supporters
To precise, pharmaceutical companies are concerned that bad counterfeits will harm the reputation of their products, which will cut into order volume and profits.
gujk··on StackOverflow also planning to switch from GoDaddy due to SOPA concerns.
Why would you use a credit card company that locks yo right account, ever? Fraud is the merchant's problem, not yours. Fraud investigation is a courtesy you provide to merchant customers, so the CC company should never have any reason or lock your account without your permission, unless they have tried and failed to reach you for close to the fraud-liability time limit.
gujk··on Earth actually has two moons.
It takes less energy to accelerate an object away from both the Earth and sun (assuming your launch pad is on an appropriate spot on the Earth surface), than to accelerate an object away from the Earth but into the sun without just getting the object stuck in an orbit like Venus or Mercury.
gujk··on How games cheat to help players
It is interesting how games differ from sports or academic contests. In sports, losing is OK because it makes you work harder to become stronger or smarter. In games, losing (or winning) is almost pointless because getting better at the game doesn't make you better at anything else in your life; so the value is in feeding some emotional or anesthetic aspect.
gujk··on How games cheat to help players
If your players are mutually anonymous, have the worst player play against multiple other teams each week, soaking up the losses. Each player gets their own Potemkin village where half their opponents are actually copies of the worst player. Now you have 1 loser instead of 31.
gujk··on 'sudo make me a sandwich' has become a reality
In the traditional Unix network environment, printing and billing is a famously hard problem.
gujk··on Can't solve a quintic? Galois Theory in 1500 words
I recently started reading now algebra book with a goal of understanding the Galois theoretical proof of his understanding unsolvability of the Quintic. This is generally considered the capstone of a complete 2-semester undergraduate study of algebra for a math major who is not pursuing graduate level pure math.

The interesting part IMO is the analysis of those normal subgroup chains and understanding the isomorphism to splitting fields.

Definitions and theorems without proofs or examples or illustrations is like the box without the gift inside. That post built up a pile of terminology but then ended before showing any content. It shows where to look out find the solutions at least.

gujk··on Bug Prediction at Google
Build an HTML generator of function PreHtml -> HTML that is quirk compatible with all browsers. Yes, you will has many bugs to fix over time. Now have all your templates code emit output of type PreHtml and your final page generation phase is the function above.

Pay attention here: any template that attempts to emit HTML will fail to Typecheck.

Not a panacea, but static enforcement of Don't Repeat Your Bugs, even before those particular bugs are discovered.

gujk··on Bug Prediction at Google
That doesn't matter so much, because this project is about highlighting delicate code regardless of reason, not assigning blame.
gujk··on Teachers Don’t Like Creative Students
Homeschooling is not solitary confinement.
gujk··on AdBlock Plus will soon allow "non-intrusive" ads by default
If ads were proxies through he content site, the site would still send your ID to Google to personalize the ad, but you would be unable to block it.
gujk··on AdBlock Plus will soon allow "non-intrusive" ads by default
Think of it as "block of ads"
gujk··on Medical Patents Must Die
Conflict of interest how? Isn't their more of a conflict of interest when a drug developer is paying the fees of the drug tester?
gujk··on Medical Patents Must Die
How is the action of manufactured drug more natural a process than a cotton gin ginning cotton?
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