dkhar | 10 years ago | on: How I started in web security
dkhar's comments
dkhar | 11 years ago | on: Conspire: A Programming Environment for NOWHERE
Before game dev, Ritter was known as a musician and a demoscener (if you don't know what the demoscene is, do some googling -- it's deffo worth it). The demoscene group he was part of broke exciting new ground in the mid 2000s by releasing some productions that packed ridiculous amounts of content into a very small size by procedurally generating lots of things, like textures and geometry. The greatest of these demos is called Debris[2], and some consider it the best demo ever. Ryg's article is basically a big index of articles explaining how parts of Debris were written, as well as how they work.
[1] https://fgiesen.wordpress.com/2012/02/13/debris-opening-the-...
[2] Watch it here: https://www.youtube.com/watch?v=mxfmxi-boyo
and keep in mind that everything you're seeing was rendered in real time by a single executable 177kb in size.
[3?] Also worth looking at: http://www.iquilezles.org/www/index.htm
dkhar | 11 years ago | on: Is Aluminum Magnetic? (2013)
All materials exhibit a diamagnetic (pushes against the field) effect, but in many materials, that effect is overwhelmed by a competing paramagnetic (pushes in the direction of the field) effect. Most of the things we call "magnets" exhibit ferromagnetism, which typically produces much stronger forces than either of the previous two.
H2O is particularly interesting, because it's actually diamagnetic, and will push away from magnetic fields. Given a strong enough magnet, you can have a lot of fun with this effect by putting common water-filled objects in its field: http://www.ru.nl/hfml/research/levitation/diamagnetic/
dkhar | 11 years ago | on: The Sound So Loud That It Circled the Earth Four Times
http://hyperphysics.phy-astr.gsu.edu/hbase/acoustic/invsqs.h...
dkhar | 11 years ago | on: New study suggests the microbes in humans' intestines may influence food choices
I personally really like a good Lat na, but what I'm served is often noodles in a thick, chicken flavored grease (rather than stock or gravy).
dkhar | 11 years ago | on: Docker Registry experiencing full service disruption
This analogy might help: Docker Registry is to Docker as Github is to Git.
dkhar | 11 years ago | on: Fully Functional 1KB Hard Drive in Vanilla Minecraft
dkhar | 11 years ago | on: Fully Functional 1KB Hard Drive in Vanilla Minecraft
That video on their main page is mind-boggling to me.
I have a friend who's a regular on that server, and he would occasionally explain to me things like how they take advantage of how Minecraft's redstone handling works to shave precious ticks off the latest ALU design's return time, or how they created a fully vanilla-compatible "internet," to pass data through wires between different people's machines.
They've got mods set up to copy and paste blocks, so you can build modular systems out of components and avoid repetitive block-placing, but AFAIK, everything else is vanilla. It's incredible.
dkhar | 11 years ago | on: American Loneliness
Still in the Western classical canon, Puccini's Madame Butterfly is fantastic, if you're into opera.
dkhar | 11 years ago | on: Deep Learning Image Classifier
dkhar | 11 years ago | on: A Face Recognition Algorithm That Finally Outperforms Humans
[1] http://www.cs.toronto.edu/~ranzato/publications/taigman_cvpr...
dkhar | 11 years ago | on: The Relationship Between Creativity and Mental Illness
I get the impression, however, that it serves the end of history and entertainment more than it does those of science. The examples in the article were light on sample sizes and heavy on speculation ("Is mental illness caused by creativity? Maybe it's the other way around! Who knows?"). I wonder if the book it's about offers more solid corroborating sources.
dkhar | 11 years ago | on: Interview with Demoscener “kb” of Farbrausch
Please check the game out and do consider supporting Paniq (apparently Patreon[2] is the most convenient way to do this). There really could be no better time for a small bit of exposure!
[1] http://blog.duangle.com/2014/07/nowhere-progress-report-its-...
dkhar | 11 years ago | on: Interview with Demoscener “kb” of Farbrausch
(That said, I'm actually part of the faction who likes aMusic's weird prog-rocky compositions. And, regardless of what you think of his work, you've got to respect aMusic for being one of the very few demoscene composers who incorporate real, acoustic instruments and vocals into their work. I really can't think of any others.)
dkhar | 11 years ago | on: Turning College Into a No-Thought Zone
I attend the College of William and Mary in Virginia. In 2009, the College dropped its speech codes and became one of the most free-speech-friendly schools in the US. This has its ups and downs (in my opinion, mostly ups).
We have a fairly diverse studentry, but I haven't seen that many people with incredibly strong opinions. Most people (myself included) don't really regularly say or do things that would fall under PC speech codes. That said, I do know a few activist types, and they relish the freedom they have at the College. I've known people who go to DC to participate in protests on the weekends, people who write articles on why the "government has failed its mandate to protect our right to privacy" or "how the liberal media uses misleading language to paint climate change as something that's actually happening" (obviously different people). We've got EFF activists, marijuana legalization activists, sexual health activists, hard-line family-values conservatives -- basically, what should be the regular college gamut. It's a shame that appears to be contingent on a free-speech policy that is relatively extreme.
Free speech also has its downsides. Earlier this year, we made state and national news when a fraternity member distributed this extremely misogynistic letter, that various headlines describe as "The most hideous thing I've ever read"[1] and "vomit-inducing"[2]. We drew censures from practically everyone, and many people I talked to around that time wanted the College to boot the offending fraternity. The College, of course, did no such thing, and the fraternity voluntarily suspended operations (there could have been some under-the-table coercion there, but I doubt it).
Anyway, the point is, if colleges allow free speech, they must also stand by while some vile, vile things get published. All communities result in emergent standards of discourse and systems of self-governance when those standards are violated (after all, the backlash from that letter was strongest in the student community), and these systems dull the effects of those vile things, but they affect the community regardless. I personally think the benefits outweigh the costs.
[1] http://www.bustle.com/articles/14437-sigma-chi-frat-brothers...
[2] http://www.huffingtonpost.com/2014/01/29/fraternity-brother-...
dkhar | 11 years ago | on: Inverter
I remember playing a version of this game that was posted on HN a few weeks ago. Jennifer Dewalt (the person who learned to code by making a website every day for 180 days) made it! http://jenniferdewalt.com/lights_on/game
The mathematics behind this game are apparently pretty interesting. I'm not big on matrix math, but I bet a lot of you guys are.
dkhar | 11 years ago | on: ITerm2 2.0
I stuck with iTerm because of the many, many little features and conveniences that make working with the terminal easier.
Tabs can be put at the bottom of the screen, which solves that pesky issue where changing tabs on a fullscreened terminal.app causes the OSX topbar to slide down and intercept your click. Tab titles change color depending on the kind of activity that's going on within. Hotkey mapping is a lot more powerful, and lets you send arbitrary hex/escape codes with hotkeys. There's a drop-down mode, like Tilda or Visor. This might just be placebo, but I'm pretty sure it also glitches out less often than Terminal.app.
All in all, everything is just a little bit nicer than the stock terminal.
[1] officially http://zsh.sourceforge.net/, but you want http://ohmyz.sh/
dkhar | 11 years ago | on: In Sweden, Sverker Johansson and His 'Bot' Have Created 2.7M Wikipedia Articles
The argument I'd make for "why?" is that Wikipedia is more accessible and more reliably available than most other resources. I mean, if the government of the Philippines had a web-based, up-to-date list of towns with some basic information, it might make sense to offload the effort of maintaining that information to them. As it stands, though, not even the US has such a directory -- so Wikipedia picks up the slack (or at least it does for towns in the US).
dkhar | 11 years ago | on: In Sweden, Sverker Johansson and His 'Bot' Have Created 2.7M Wikipedia Articles
If nobody else was going to create an article about some species of butterfly, I don't see why adding that information would be harmful to Wikipedia. Does it make Wikipedia harder to read? Harder to search?
I don't think "it's not written by a human" is a valid argument for factual information, and I've never seen any evidence to suggest that it should be one.
EDIT: I found this bot's edit log! https://sv.wikipedia.org/w/index.php?title=Special:Logg/Lsjb...
Here are a few articles randomly picked out of the latest 1000:
https://sv.wikipedia.org/wiki/Urochloa_plantaginea
https://sv.wikipedia.org/wiki/Brachiaria_vittata
https://sv.wikipedia.org/wiki/Eutriana_repens
https://sv.wikipedia.org/wiki/Andropogon_decipiens
After looking at these, I'm beginning to see why there is some backlash. There are literally thousands of articles here that read "X is a species of grass. It got its name from Y and is described in Z catalog." The only people who would need this information are botanists, and they already have their own specialized sources. I'm still not against bot-produced content, but I understand why some people oppose initiatives like this.
dkhar | 11 years ago | on: What Happens When Digital Cities Are Abandoned?
(This isn't the exact link I remember seeing, but https://news.ycombinator.com/item?id=3666564 )