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CIA Lied Over Brutal Interrogations

Sqr(twg) Re:Really? .. it comes with the job (772 comments)

Another problem is that the interrogation techniques were not originally designed to get information. They were originally developed to get captured soldiers to admit to false confessions.

As was the case here. The the Bush/Cheney administration knew that they wouldn't get any useful intelligence from torture, but they wanted "evidence" pointing towards Saddam, so that they could start another war.

about two weeks ago
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Unity 8 Will Bring 'Pure' Linux Experience To Mobile Devices

Sqr(twg) Re:Mint Debian (125 comments)

I use Mint on my desktop, but write "Ubuntu" when I search on google. I think a lot of people do this.

You get more/better hits when you search for "Ubuntu" and the proposed solution will work on Mint 99.9 % of the time.

about two weeks ago
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US Treasury Dept: Banks Should Block Tor Nodes

Sqr(twg) Re:Not a strong chain if the IP is the strongest l (84 comments)

It's not meant to be the strongest link in the chain. Just a link in the chain. If, every time someone connects in a suspicious way, you call their cell-phone to verify, or ask for an extra one-time password, or at the very least send them an email, then you can detect/prevent a lot of fraud. (This applies not only to Tor, but to any type of "unusual" connection, for example connecting from Russia five minutes after using a credit card in the U.S.)

about two weeks ago
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Is LTO Tape On Its Way Out?

Sqr(twg) Re:Shyeah, right. (284 comments)

Rsync will happily detect and copy changes without propagating whole files, yes. But only on network transfers, and it requires reading the entire file on both ends. When backing up to a local (removable) hard drive, which is what we are discussing here, it is usually faster to copy the file once than to checksum it twice, so that is what rsync does by default.

I have compared the tools, and I do know what they do. I found a hundredfold improvement in the time to backup a set of virtual machines on a linux server after switching from rsync to ZFS.

about three weeks ago
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Is LTO Tape On Its Way Out?

Sqr(twg) Re:Tape Culture Fallacy (284 comments)

If the file server uses a file system with checksums, and those checksums are also backed up, then it's a simple matter of reading through the tape and verifying the checksums. You don't need to compare to the original files.

(The probability of a corrupted backup server accidentally creating a correct checksum can be made arbitrarily small. Usually it's something like 2^-256.)

about a month ago
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Is LTO Tape On Its Way Out?

Sqr(twg) Re:Shyeah, right. (284 comments)

You might want to look at using ZFS instead of rsync. I switched a while back, and it was definitely worth the initial effort of changing the file system on the server.

With rsync you can get inconsistencies because not all files are backed up at the same instant. ZFS snapshots get around this.

If you modify a large file (say a 100 GB virtual machine), rsync will re-backup the entire file. ZFS will keep track of the part that changed and only copy that.

Also if a file on one of your multiple backups is subtly corrupt, you might not notice. Or even if you do compare the copies, you might not know which one is correct. With ZFS, the entire file system is checksummed and a raid or mirror can heal itself.

about a month ago
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I'm most interested in robots that will...

Sqr(twg) Re:Drive me around = I can get drunk (307 comments)

If you don't live in NYC or near another major metro/subway position, and you're too fucking stupid to call a cab instead of driving home drunk, then drinking becomes very dangerous.

FTFY.

about a month ago
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What Happens When Nobody Proofreads an Academic Paper

Sqr(twg) Re:MS Office Incompatibility (170 comments)

In that case I'm sure you're doing something like this:

\newif\ifdraft
\drafttrue % or \draftfalse

\ifdraft
(should we cite the fine Gabor paper here?)
\fi

about a month ago
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What Happens When Nobody Proofreads an Academic Paper

Sqr(twg) Re:MS Office Incompatibility (170 comments)

The paper in question was most likely not written in LaTeX, or they would have put a percent sign in front of the comment when they first put it in.

about a month ago
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There's No Such Thing As a General-Purpose Processor

Sqr(twg) Re:Saturday is Semantics Day (181 comments)

After all each time you add a different type of specialty processor into an environment, you introduce another codebase for the application, another toolchain to learn and another set of communication / OS support issues.

That will be an issue only for the OS and library developers. To the applications developer there will be no noticeable difference. It is already the case that you need to use specialized libraries to get maximum performance on common types of tasks.

For example, if you want to use an FFT on a modern "general purpose" processor, you will get much better performance using a standard library function than you would if you wrote your own. There are so may issues with memory access patterns, core and cache utilization, etc. that you will never have time to figure out if you just want to use the FFT (rather than do research on the algorithm itself.)

If a future CPU gets a built in FFT, then the standard library will be updated, and your application will just run faster. No modification necessary.

about a month and a half ago
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Ferguson No-Fly Zone Revealed As Anti-Media Tactic

Sqr(twg) Re:Legal requirements (265 comments)

Keeping the press away is a matter of National Security. That's how it is in every police state.

about a month and a half ago
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OneDrive Delivers Unlimited Cloud Storage To Office 365 Subscribers

Sqr(twg) Re:Who cares (145 comments)

I used to hang out in a swedish photography/videography forum. Bandwidth is cheap in Sweden, so a lot of these guys were on 100+ Mbit connections and liked to keep a backup in the cloud. Whenever a new "unlimited" storage service came around they'd hop on and upload tens of terabytes of photos/videos. (None of wich could be de-duplicated, since it was all original work.)

Inevitably, the storage service would update its TOS within a year, or go bankrupt.

about 2 months ago
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Ask Slashdot: How Do I Make a High-Spec PC Waterproof?

Sqr(twg) Re:Water cooled! (202 comments)

This is currently modded "funny", but is actually a very good solution to the problem. With water-cooling, all electrical components, except the radiator fan, can be in an air-tight enclosure. Then get an IP rated fan, or a larger, fanless radiator.

about 2 months ago
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Michigan Latest State To Ban Direct Tesla Sales

Sqr(twg) Re:Great Job (256 comments)

On the contrary: This is the ultimate free market. Even the politicians are for sale. All Tesla motors need to do is raise some money, buy half the legislature, and ban the sale of non-electric cars. A kickstarter campaign would probably do it.

about 2 months ago
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32 Cities Want To Challenge Big Telecom, Build Their Own Gigabit Networks

Sqr(twg) Re:Hey Verizon, can you hear us NOW! (175 comments)

It's interesting how it is always "Socialism vs Capitalism", with most people divided into two camps, and very few saying that one or the other migh be better depending on circumstances.

I like capitalism when there's a natural way that businesses can compete. For example, adjacent coffee shops might compete on a number of parameters like price, quality, speed of service, etc. It is possible to establish a new coffee shop in an area that already has one, if you can compete on at least one of theres parameters.

I like socialism when there is no way that cometition will work. For example ISP:s provide basically identical service, so they can only compete on price and marketing. Marketing is bullshit, so rational people will pick the one with the lowest price. This means that with one ISP in place, the other ISP:s have no incentive to build infrastructure in the same area, because competition would drive prices down to where they can't recover the initial investment. The single ISP therefore gets a monopoly. It is preferrable that the monopoly is owned by the state.

about 2 months ago
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The Physics of Why Cold Fusion Isn't Real

Sqr(twg) Re:Why Cold Fusion (or something like it) Is Real (350 comments)

The most likely answer to this riddle is that all of the so called researchers are complicit.

Never attribute to malice what can adequately be explained by incompetence.

The researchers did make a measurement that reveals the hidden circuit. They just didn't realize it themselves. (They measured currents in order to estimate heat loss in the cables.) Details here.

about 2 months ago
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The Physics of Why Cold Fusion Isn't Real

Sqr(twg) Re:Why Cold Fusion (or something like it) Is Real (350 comments)

The latest report on Rossi's device actually contains clear evidence that the experimental set-up has been tampered with. On page 14 it says:

  "Measurements performed during the dummy run with the PCE and ammeter clamps allowed us to measure an average current, for each of the three C_1 cables, of I_1 = 19.7A, and, for each C_2 cable, a current of I_1/2 = I_2 = 9.85 A."

Here, I_1 and I_2 are the line and phase currents of a set of delta-connected resistive load inside the "reactor". The ratio between these currents should therefore be sqrt(3) (approximately 1.73). Since the measured ratio is 2, the curcuit diagram cannot correspond to reality. The reactor probably contains two separate sets of star-connected resistors instead. By feeding current to the second set out of phase with the first, like I suggested in a previous slashdot comment, the current clamps are fooled into giving a too low measurement.

This document (in Swedish) explains it all in detail.

The fact that these measurements were performed and reported also implies that the authors of the report were not part of the fraud. Rossi simply fooled them all.

about 2 months ago
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Independent Researchers Test Rossi's Alleged Cold Fusion Device For 32 Days

Sqr(twg) Re:He tried patenting it... (986 comments)

Of course the wiring diagram doesn't show any doubled cables. My point is that one of the cables might contain two conductors without the authors being aware of it.

There is no logical explanation for the six cables going into the "reactor". Three cables would be enough for a star configuration. If you add the requirement that the resistors must be connected in a delta configuration, then four cables would be enough.

The only reason I can think of for the extra cables is that they are part of a hidden circuit.

about 2 months ago

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