Become a fan of Slashdot on Facebook

typodupeerror

## Comment Re:Pretty simple. (Score 1)728

Sure I'm already paying levies on blank media (€9 for a TB HD and €0.59 per DVD (yes that's 60% of the retail price)) here in Belgium.

The levy is just used to "compensate" for making copies of copyrightable material. Yes, for personal copies/backups of the data.

## Comment Re:Talk about censorship (Score 2, Informative)306

From the article of the original slashdotted article (http://www.washingtonpost.com/wp-dyn/content/article/2010/09/09/AR2010090907747.html)

"Shaffer's book was reviewed and cleared in writing by the Army Reserve earlier this year."

They did clear it. Afterwards they realized they forgot something and are paying for the damages of the first run.

## Comment Re:Talk about censorship (Score 5, Insightful)306

They were always willing to cooperate but they already made the first run. It's just the DoD paying for the damages of forgetting to censor something in the book beforehand.

## Comment Re:Only 98% lies. (Score 1)547

675 * 1.1 (ATM overhead) = 742KB/s = 5.94 Mb/s

Unfortunately when I upgraded to a 12Mb/s connection I remained capped at the previous speed because "I'm too far away from the central".

## Comment Re:Proof by example? (Score 1)457

NP-complete (= NP hard + in NP) means: As hard or even harder than any other NP problem. (so they're the most difficult of any NP problem) if P=NP, then they're actually pretty easy to solve since it's in NP thus also in P. if P!=NP then they're the most difficult to solve of any NP problems, so there's no polynomial time solution. (or else every NP problem would have a P solution and thus P=NP) the unsolvablity of minesweeper has nothing to do with its complexity.

## Comment Re:Starcraft 2 lack of LAN was to control pro game (Score 4, Informative)795

Yes, Korean law states that (in non legal terms): You may do what you want with what you bought.

Kespa (korean e-sports association) ran SC:BW tournaments for many years on LAN and Blizzard couldn't do anything about that. Now that they would have to connect to the blizzard servers to play, Kespa would need to have authorization to host tournaments (which they won't get because Blizzard has already chosen GomTV to organize the tournaments)

## Comment Re:Einstein once said... (Score 1)511

SVD-decomposition : my try (shouldn't it be SV-decomposition anyway?)

A matrix is a rectangle filled with numbers. An SVD, changes the matrix in 3 other matrices. The middle one has a hole bunch of zeros. The first and last one have the same numbers in different order. We can use those 3 matrices to do stuff easier than with the original one.

Let me know if he understands it.

## Comment Re:Slight of hand? (Score 1)981

But your permutations aren't equally likely!

Prob[boy,girl] = Prob[boy,boy] = 1/3

Prob[boy,girl] = Prob[Named Boy, girl]
but Prob[boy,boy] != Prob[Named Boy, boy]

It's the "you're wrong or you're right => 1/2" all over again.

## Comment Re:The universe would suffer thermal death (Score 1)486

It's been a while since I read the full article (and IANAPhysicist), but it was about a 1 kg laptop with a 1 liter volume. (don't think about a laptop, thing about a cube of energy that can calculate stuff really fast) Sure you could make a thousand of them and put them in a 1 m cube. And a billion of those to make a km cube, but that's only increasing the computations by 10^12 = 2^40, which would barely come close to breaking 1 AES-256 enrypted file in a a few days.

However, this is the absolute limit to computation. The computer already has an internal energy of E=mc^2 = 8.9*10^16J (for 1 kg) at 10^9 Kelvin.

## Comment Re:The universe would suffer thermal death (Score 1)486

Yes, but you can predict limits to the (currently accepted) laws of physics.

Ultimate Physical limits to computation, Seth Lloyd - Nature, vol 406, 31 august 2000 (hopefully not too outdated)

a quote from the article: "The ultimate laptop performs 5.4258 * 10^50 logical operations per second." (that's about 2^170)
You can definitely predict limits to computation. Even the most powerful machine would need a long time to go though all combinations of AES-256.

## Comment Re:Solution? (Score 1)1042

It's not necessary to switch liter/gallon and kilometer/mile. The necessary conversion is to express it in gpm instead of mpg (gallon used per mile travelled instead of mile per gallon)

The specific units only cause a constant factor.

## Comment Re:Hacking mobiles (Score 2, Interesting)190

That's certainly possible.

The big problem I believe is that there are so many different operating systems (Symbian, iPhone OS, Android...) that all have a part of the market. Being able to write a virus/find a backdoor to control 90% of PCs is very profitable. Just like there are not many people writing virusses for Mac OS or Linux, there are not many viruses for mobile phones (yet).

# Slashdot Top Deals

Old programmers never die, they just hit account block limit.

Working...