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marchdown

177 karma · joined April 5, 2009

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marchdown··on Donald Knuth never told Steve Jobs that he was full of shit
There's Whitehead, who co-authored "Principia Mathematica", and then there's Wittgenstein and Wiener, who offered a fairly thorough critique. Doubtful that they didn't understand it. I can't hunt down the exact quote right now, but AFAIK, when asked how many people have read and fully appreciated Principia, Russell's answer was "perhaps a dozen".
marchdown··on Linux 3.0-rc1 is here
There is a nice open-source (which github is not) web front-end for git repos, http://www.gitalist.com/, and would you believe it, even they use git-web on their website.
marchdown··on How do you quote a passage that has used '[sic]' mistakenly?
Italicize the quote or set it in different font. If that is not possible (because of strict style guidelines, maybe), your best remaining option is to lampshade its appearance.
marchdown··on Fooling myself to work
I love me some sencha! >Green tea is helathier. Could you perhaps link to any reasearch backing up that claim? Anecdotal evidence is fine, too.
marchdown··on Natty Narwhal with Unity: Worst Ubuntu beta ever
You might find Cmd+Shift+/ useful then. It allows you type menu commands on keyboard, see where they are in the menu, and discover new functionality.
marchdown··on An Open Letter to Apple on the Readability App rejection
For somebody new to the whole iTunes Store ecosystem it is neither faster nor less mentally challenging to set up a new ITS account than it is to jailbreak their new device.

It may strike you as obviously false, and it may well have been so two years ago, but when I got my new iPad after moving to another country I've spent about twice as much time getting iTunes to let me pay for apps in foreign App Store than I've spent researching jailbreak options and caveats and then actually pwning the device.

So no, App Store is far from the only way to distribute iOS software, even though it still is the default and sometimes the only apparent way.

marchdown··on Apple is actually asking for 100% of SaaS mobile revenue
Konfabulator comes to mind: http://arstechnica.com/apple/reviews/2005/04/macosx-10-4.ars...
marchdown··on Oxford announces new degree in Computer Science and Philosophy
I don't quite see how you could practice critical thinking while not gaining any solid ground. Are philosophical truths to unattainable, so eternally receding? How do you know that your way of arguing has any benefits if you can't get closer to truth with it?
marchdown··on Humble Bundle #2 Breaches $900k, On Way To $1M USD
It would be interesting to see more complete statistics.
marchdown··on Schneier's take on the alleged backdoor in OpenBSD
Out of curiosity, who else is out there writing essay-length on crypto and security in general?
marchdown··on Facebook intern visualizes friendships, draws world map
I wonder if Seznam really is more popular than Google in ČR. Do you have any data to support this? Also I wonder what the deal is with Jyxo.cz. How much behind Seznam is it nowadays? Wasn't it technically superior?
marchdown··on Why don't gazzilionaires start their own countries?
Because corrupt system is ineffective system. If they have enough influence to control the system through and through, enough resources fine-tune it to serve their ends, enough involvement to subvert it, why would they put up with ineffectiveness in their system. In a way, all rulers face this battle, and tyrants seem to have easier time with it than elected leaders.
marchdown··on Schizophrenic Brains Not Fooled by Optical Illusion
Vex, as in vertex. Bulging outwards. I think the proper way to remember those (I've struggled with them too) is actually use them a lot. For example, some mathematicians study convex geometry, which is a meaningful subject on its own.

*(lazy ninja edit)

marchdown··on Why don't gazzilionaires start their own countries?
Still strange how they don't systematically work to further their influence and improve community. There is place for non-violent restructuring of corrupt governments from the inside.
marchdown··on 15-minute writing exercise closes the gender gap in university-level physics
> Which interview do you perform better on?

You pose this question as if the answer were obvious, but I'm not only stupid enough not to see it, I can actually think of couple of reasons it could go either way, and they do not feel construed (to me, anyway). On several occasions I've asked people enrolled a couple years ahead of me about their favorite subjects and pet projects and whatnot, and while they were friendly and everything, they were uncomfortable reflecting about their schooling in front of a (relative) stranger, and they grew even more uncomfortable when I tried to coax them to discuss our discipline by talking about my own pet projects or struggles.

On the other hand, It's perfectly normal for interviewee to be nervous and underperform, and twenty minutes of chat on relevant and familiar topic would seem to dissipate impact somewhat.

marchdown··on SSH Commands / Tricks
Last time I tried to use it I was burned when it came to removing packages. Sure, I can remove them by hand, but then what good is my package management system? The hairier installation is, the more configuration files it creates and modifies all over the system, the more urgent is the need for reliable management system. And there are packages that can't not write all over the system. SSH is one. Sage's another.
marchdown··on SSH Commands / Tricks
It's clunky. How is it better than compiling for yourself or using Apple-blessed MacPorts?
marchdown··on How to build discipline and brainwash yourself
By the power of anthropic principle, AKA naïve reasoning, I call upon the practice of double-counting my evidence and gain a BOOK.
marchdown··on Some fun mathematical puzzles
POTENTIAL SPOILER

You only have to think in terms of permutations, which always break up into cycles. How is this especially hard?

marchdown··on When we got to the scanner, I opted out. Then they opted out.
This is something I just don't get. Congressmen are some of the most frequent flyers, and if anybody outside TSA itself has any say in the matter, it is them. Why don't they push harder? Alternatively, why does the press behave as if congressmen are simply ignorant of the issue? Why don't they discuss it publicly?
marchdown··on When we got to the scanner, I opted out. Then they opted out.
Now, wouldn't it be interesting to show up at the airport with a couple of spare dosimeters and give them to the porn crew? It is doubtful that they are all instructed against them, or else they would have already considered radiation risks.
marchdown··on Sparrow - The New Mail for Mac
For what it's worth, I didn't waste a single click when deleting signature, went straight for it, though I agree that it is unintuitive in principle and that there were not enough contextual cues.
marchdown··on TrueCrypt 7.0 released, now with hardware-accelerated AES support
I've never noticed that their address is only given as a picture, it's not searchable. See for yourself: google.com/search?q=site:truecrypt.org+Henderson, NV.
marchdown··on TrueCrypt 7.0 released, now with hardware-accelerated AES support
There are several significant problems with TrueCrypt. Somehow, they fall into different domains, so for most users only one of them really matters.

For FOSS-champions thing is that TrueCrypt developers are sneaky and don't accept contributions, so that in practice there is little outside control, and "given enough eyeballs are bugs are shallow" doesn't quite work.

For technical users, admins and frugal geeks TrueCrypt hides several unpleasant surprises, such as the encryption being undoable without a huge spare disk.

For casual users interface is cumbersome and counter-intuitive at times. It's almost as if developers have never considered usage scenarios. You have to type your passwords more often than strictly necessary, and sometimes you have to remember to do it, with risk of losing your data.

marchdown··on Math library functions that seem unnecessary
As far as I understand, mathematically von Neumann's computers simply use some specific algebra that is decidedly different from naïve arithmetic. It is actually very useful in certain applications, such as cryptography, that rely on its algebraic properties. It may or may not be good approximation for some numeric problems, but it is generally faster then working out elaborate mathematical structures.

But I'm only an ignorant student, and I wonder if these solutions are really significantly more effective than implementing the number tower or switching to bignums? What are the best practices and the consensus among professionals that have to deal with inadequacies of floating-point number in real-world numeric applications?

marchdown··on Innovative 3D Maps Show Where to Find Drugs and Prostitutes in San Francisco
Is any of that data available to the general public?
marchdown··on Ask HN: Is the source code for HN freely available?
There were a couple of clones, but none took off really. The most prolific one seems to be newmogul.com by nickb, focused on business and economics. Nickb has all but disappeared since, and Newmogul is no more, but some of the patrons moved on to http://markenomics.com.

HN is written in PG's own dialect of lisp, http://arclanguage.org and source code for vanilla version of the site is included with arc distribution. There's no reason not to hack together a clone and get a taste of the language.

marchdown··on 10 Mac Apps I Can't Live Without
Sadly doesn't work in Chrome, Textmate or Papers.
marchdown··on [dead]
I would guess that 8GB is maximum bonus space, which adds up to 10GB when you count the two gigs you started with.
marchdown··on HN: share your unneeded Google Wave invites
http://mailhide.recaptcha.net/d?k=010UujlpeoO_0JxDWuhbu7rA==...
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