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Leszek

1,569 karma · joined May 2, 2012

[ my public key: https://keybase.io/leszek; my proof: https://keybase.io/leszek/sigs/3_mY6iFecdFZc6Ow5JJY9sZoaasKcTYHSNihcVgQptw ]
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Leszek··on Terms of Service, Didn't Read
Have you ever read through the entirety of GPLv3? It's pretty damn long: http://www.gnu.org/licenses/gpl-3.0.en.html
Leszek··on Jump – Experiences like you're actually there
I've tried an Oculus Rift (DK1 only though), so here you go: how is it different from a video game, it's obvious it's fake.

Genuinely though, I found it a far less engaging, far less immersive experience than a normal 2D screen. Maybe the later models are better, I don't know, but I definitely don't see what the fuss was about.

Leszek··on What Are Traffic Waves and Why Do They Happen So Much?
> and the concertina is a popular instrument in South Africa amongst the ancestors of the people who are usually responsible for these waves

I'm not sure what you're trying to imply there, but it seems a bit racist? Or am I just being ignorant?

Leszek··on Six Men Spent 520 Days Locked in a Room to See If We Could Live on Mars
There's a big difference between "it's really cold out here" and "I literally can't breathe the air". Also, making the best of a horrible environment could make it less horrible, but doesn't mean it wouldn't still be pretty horrible.
Leszek··on Wolfram Language
At least "reinvented" acknowledges that it was previously invented, Wolfram tends to imply that his is the first system to do the things he describes.
Leszek··on How to implement a constant-expression counter in C++
Do you consider this a C++ language bug that you happen to be able to exploit? Or a necessary result of being able to combine several correctly behaving features?
Leszek··on In the Tenderloin
I was recently at the edge of the Tenderloin, in Union Square, when out of nowhere when a man walked up behind me, drunk or high or crazy (or some combination of the above), hands covered in blood, and a trail of blood behind him. Before I even noticed him, he casually wiped his bloodied hands on my shoulder, and slurred some loud but incomprehensible statement at me. Not really sure how to react, I briskly walked away, and kept an eye on him doing much the same thing to other people as I did my best to simply keep my distance. Perhaps I should have called the cops, perhaps even an ambulance given the state of his hands, but in all honesty I just wanted to keep my distance and not get even more covered in blood, or assaulted in some even worse way.

I'm not trying to make any particular point with this story, just adding my contribution of an event that happened in the area.

Leszek··on Microsoft Surface Hub
You'd be surprised how sensitive we are to latency on input. Microsoft themselves did studies on it: https://www.youtube.com/watch?v=vOvQCPLkPt4
Leszek··on Elon Musk Had a Deal to Sell Tesla to Google in 2013
Out of curiosity, why not?
Leszek··on How We Use Make
Because `make all install` would first build, then install, while `make install` would just do the installation, regardless of build state.
Leszek··on My New $156 Startup
I honestly thought this was satire until I got to the website link at the end.

From the initial "design" sketch to the use race-to-the-bottom design and coding websites, I was sure this was a parody of startups racing to sell a non-existent product with just vague ideas and generic logo.

Leszek··on The infinite-pixel screen
Relevant counterargument: http://xkcd.com/1053/
Leszek··on Invented here syndrome
Do you have links for any of these released systems?
Leszek··on Understanding Python's augmented assignment (a += b)
Well no, for

    std::vector<int> t = {0, 1};
t[0] calls operator[], which returns an int&. This is precisely an lvalue reference, which is kind of like a memory address, but int& is a type in its own right. Calling it a "reference object" is not entirely correct, but it's also not entirely incorrect. And let's not get started on vector<bool>...
Leszek··on How to get into an admin account on a Windows computer
In which case, why bother with user passwords at all?
Leszek··on Latin Lives
Sardinian is considered to be closer to Latin than Romanian, and arguably Italian and Spanish are closer to Latin too.

According to a book that I haven't read[1], but is cited by Wikipedia[2], "A 1949 study by Italian-American linguist Mario Pei, analyzing the degree of difference from a language's parent (Latin, in the case of Romance languages) by comparing phonology, inflection, syntax, vocabulary, and intonation, indicated the following percentages (the higher the percentage, the greater the distance from Latin): Sardinian 8%, Italian 12%, Spanish 20%, Romanian 23.5%, Occitan 25%, Portuguese 31%, and French 44%."

[1] Pei, Mario (1949). Story of Language. ISBN 03-9700-400-1 [2] http://en.wikipedia.org/wiki/Sardinian_language

Leszek··on Avoiding a Common Mistake with Time Series
I don't get it either. The author is adding a common dependency to two independent series makes them correlated, which to me seems trivially true. He then goes on to say that this form of correlation is uninteresting, because we're only interested in whether variations are correlated, which doesn't seem so trivially true: after all, a linear trend is a first-order variation, and if two things both increase at the same rate, then their relationship is worth at least a second look.

It looks like what the author is really trying to say is that we should pass the data through a high-pass filter, eliminating any 'expected' trends such as inflation, and instead observing if the noise of the two datasets is correlated. This is an observation that has some value, but is certainly not trivial to pick a threshold for the high-pass (certainly it's not always just a linear trend), and the mutually dependent variable can have as much noise (if not more) as the two measured data sources, so you still might get "false" correlation.

Leszek··on One Frickin' User Interface for Linux (2003)
Well, high DPI support isn't something to rave about on Windows, although that may be for similar reasons (WinForms vs WPF vs whatever)
Leszek··on Web content fits better on a tall monitor
Though if you open a book, you actually have a landscape view of two pages, side-by-side.
Leszek··on Fossil – Simple, high-reliability, distributed software configuration management
I can understand the frustration of losing a couple of days of work, but wow, that thread does not show Zed Shaw in a good light. This approach of "there was a bug so now I'm throwing all my toys out of the pram" isn't particularly constructive or mature.
Leszek··on The Saddest Thing I Know about the Integers
Granted, but I was replying to a post stating that "it" is not better in practice, where "it" is using 0 base, mod 7 arithmetic.

Anyway, yes, you've shown correctly that mod 7 arithmetic is useful, proving half the great-great-somethingth-parent's point. Now, the remaining interesting cases are the inversion case and the multiplication case, where 0 based is simpler (for me) than 1 based.

Also, the idea of using the word "octave" for "mod 7" is already pretty broken, and is what caused me my initial hesitation.

Leszek··on The Saddest Thing I Know about the Integers
Er, yes, I believe that's the point the grandparent was making (and the parent was disagreeing with)
Leszek··on The Saddest Thing I Know about the Integers
> There is really virtually no cognitive load required to hear "major tenth" and realize that it's a major 3rd plus an octave.

Maybe not for you, but it certainly took me a moment to convince myself that that is true.

Leszek··on Kip Thorne: The science of Interstellar
What I didn't understand about these pings is wouldn't their wavelength be massively lengthened by the time dilation? How did they even receive Miller's signal if it was redshifted ~60000 times?
Leszek··on Can Qt's moc be replaced by C++ reflection?
You're confusing compile-time reflection (what is needed for moc) with runtime reflection (which affects binary size and execution time).
Leszek··on Two new subatomic particles discovered at CERN
I suppose this is the particle physics equivalent of 'discovering' heavier and heavier elements in the periodic table -- good evidence towards existing theory, but effectively these are artificial constructions that exist only briefly and never (?) outside lab conditions.
Leszek··on The Beauty of LaTeX (2011)
Lying about broken links to get your own referral ID in there? That's low.
Leszek··on 0h h1 – A little logic game
"No reason to dumb more capable platforms down to the lowest common denominator."
Leszek··on The Tyranny of the Rocket Equation (2012)
Oh. I stand corrected, should have researched that before commenting.
Leszek··on The Tyranny of the Rocket Equation (2012)
Does he build rockets?
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