jcarreiro

10 ms·

31.
by jcarreiro 14y ago
This is called Quantum Field Theory. See http://en.wikipedia.org/wiki/Quantum_field_theory .
32.
by jcarreiro 14y ago
> JSON and RSS are just different methods for representing data to be communicated to other systems. We call those, "views".
33.
by jcarreiro 14y ago
Treasuries are not liquid assets for the average consumer -- they are held to maturity. This means that those with "modest" savings can't afford to own them, because of the liquidity risk. edit: s/TIPS/Treasuries
34.
by jcarreiro 14y ago
So, were you on the Concorde, or was it a Tu-144?
35.
by jcarreiro 14y ago
stef25, this is known as key stretching, as others have already explained elsewhere in this thread. Essentially the idea is to make computing the final hash of the password slower by iterating the hash function many times. This additional s
36.
by jcarreiro 14y ago
I read cschneid's comment twice, and nowhere to I see where he or she specifically recommends using the username as a password; he or she simply recapitulates the logic behind using a unique salt value for each stored hash, and describes us
37.
by jcarreiro 14y ago
I just tuned in, and it looks like the clock is still holding at T-13.
38.
by jcarreiro 15y ago
Yes. The new research builds on that work.
39.
by jcarreiro 15y ago
And http://physics.aps.org/story/v9/st29 , which is an older Focus story linked to from my original post.
40.
by jcarreiro 15y ago
See also http://physics.aps.org/story/v17/st15 for a bit more on photon orbital angular momentum.
41.
by jcarreiro 15y ago
If IBM didn't think that it would be awarded patents for work like this, why would they bother to do the research in the first place?
42.
by jcarreiro 15y ago
No no no. Always throw by value, and catch by reference. Like this: throw BathwaterException(Baby()); Wait, we are talking about C++ programming, right? ;)
43.
by jcarreiro 15y ago
> It's not (yet) possible to shield astronauts from enough space radiation to keep them alive during the 9-month trip to Mars. I'm sorry, but this is not true. See for example http://www.spacedaily.com/news/mars-general-03w.html .
44.
by jcarreiro 15y ago
No one said it would be easy. The question is, is it worth doing anyway? Personally, I say, ad astra per aspera.
45.
by jcarreiro 15y ago
Even if Elon Musk is totally wrong, it is the vision that is important. The vision of creating a thriving Mars colony where millions of humans can live and work will drive incredible improvements in our technology, by inspiring thousands or
46.
by jcarreiro 15y ago
Perhaps the technology simply isn't sensitive enough to require one?
47.
by jcarreiro 15y ago
> wouldn't it be great if we could save all experiences and thoughts of all beings on earth living now and also have a way to easily browse this vast collection? No. I'm thinking of a short story I read long ago, about a man who invents
48.
by jcarreiro 15y ago
You may be thinking of "By His Bootstraps", which is a fantastic Heinlein short story about time travel. http://en.wikipedia.org/wiki/By_His_Bootstraps
49.
by jcarreiro 15y ago
I can't recommend 1password enough. There is no substitute for having a unique, long, alphanumeric+symbols password for every web site you use. If you use the same password for multiple sites, then your entire online identity is only as sec
50.
by jcarreiro 15y ago
There is a "collective works" copyright, so I guess -- I am also not a lawyer -- that if one made a copy of some database, it may be infringing on the creator's rights even if the contents of the database consisted solely of public domain w
51.
by jcarreiro 15y ago
> JSTOR's particular collection of documents is protected by copyright We've discussed this on HN before. Reproductions of public domain works are not protected by copyright. Edit: Of course a significant portion of JSTOR's archive does
52.
by jcarreiro 15y ago
An over zealousness to punish others out of proportion with their alleged crimes is not something which we should make a virtue.
53.
by jcarreiro 15y ago
> We have services like youtube and Flicker that provide hosting for movies and pictures for free. The data requirements are far greater for these Don't be so sure. Some experiments can produce large data sets, which ideally should be m
54.
by jcarreiro 15y ago
The works are in the public domain. Unless you think that simply scanning and producing a bit-for-bit accurate copy of a work in the public domain produces a new work that deserves copyright protection?
55.
by jcarreiro 15y ago
> Why does the only place you can download them charge for the privilege? Because they can.
56.
by jcarreiro 15y ago
The Economist had a very interesting report on democracy in California recently: http://www.economist.com/node/18563638?story_id=18563638
57.
by jcarreiro 15y ago
If the government has a balanced budget, _and_ there is a trade deficit, then the private sector must be losing money -- otherwise, where is the money that is being transferred to the external sector coming from?
58.
by jcarreiro 15y ago
> Plus Tau Day's a fun excuse to eat two pies. One could always celebrate 2\pi day. ;)
59.
by jcarreiro 15y ago
> one quarter of a circle is tau/4, or pi / 8 I am not particularly well versed in mathematics but isn't 1/4 of a circle pi/2 radians?
60.
by jcarreiro 15y ago
I am curious as to why you think that Benford's Law in intuitive. I certainly would not have expected it. Could you explain your thinking in more detail?

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