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A Mathematical Proof Too Long To Check

Chris Katko Re:SAT is not a brute force loop (189 comments)

>A standard SAT proof [wikipedia.org] deduces new clauses from the original problem by applying the resolution rule [wikipedia.org] repeatedly.

Can we put those in a for loop?

about 5 months ago
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A Thermodynamics Theory of the Origins of Life

Chris Katko Re:What is Life (185 comments)

God did it. --Richard Stallman

about 6 months ago
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Microsoft Reports Record Revenue

Chris Katko Re:Wow. (289 comments)

But Microsoft made it! We're supposed to be angry!

about 6 months ago
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Accenture Faces Mid-March Healthcare.gov Deadline Or 'Disaster'

Chris Katko Re:0% (215 comments)

The reason is, most Slashdotters want to have their cake and eat it too. Corporations are evil, and so is big government. So it's win-win for complainers.

After having a chronic disability and spending three years bedridden going to doctors every week or two, I am qualified in my opinion that the current system is a complete piece of shit with doctors misdiagnosing me, prescribing me medicine without telling me the side-effects (read: I almost died once), I was super close to getting those tainted spinal injections that hit the news, the entire industry thinking judging me and saying I was an "addict" when all I wanted was to get better and finish my degree, and more.

And if the current system is a complete piece of shit, then ANYTHING that suggests change is worth it, no matter how pragmatically flawed. Because it got us TALKING ABOUT IT. And even if the system gets temporarily worse, it will then be seen as "changeable" and it'll be more apt to get better over the long run. The biggest thing Obama's healthcare bill did was got people to start being vocal about how shitty and how much the current system really needs changing. The idea that merely talking about it made you a "socialist" eventually got drowned out by real concerns.

about 6 months ago
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23-Year-Old X11 Server Security Vulnerability Discovered

Chris Katko Re:Go ahead, just TRY a buffer overflow on my VAX (213 comments)

By the same degree, wouldn't that imply a C64 (MOS 6510), and Tandy Model 100 (Intel 80C85) server would be just as secure?

You really want to screw a hacker over, use an operating system with an "archaic" memory management system. Aww, you overran the buffer? That's cute, too bad it hit the end of the 16-bit data segment.

about 7 months ago
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Thank Goodness For the NSA — A Fable

Chris Katko Re:Capability Based Security (60 comments)

More over, it doesn't even need to be something complex as a per register, memory block level. It can be as simple as saying "this is a game" and "most games don't need root file access" therefor "this thing that calls itself a game, is trying to use root file access, stop it."

Categories.

Most graphics tools are the same in what they touch. Most games are. Most [insert anything].

It wouldn't be hard to implement, or specify. Hell, many applications are ALREADY categorized. You press "apps" button or the "games" button on Google Play/whatever. Once you have a set of categories, building a list by hand, or through building a probability distribution of a large sample set of "games" and what they access.

Any access outside of the categories normal way can be handled many different ways. You can have the user approve of it on a per access level, on a per access type level, have the user decide if he wants to promote the "game" to a "game special access" which gives it more, but not root, access. And so on.

I'm no expert on virus propagation, but I would postulate that it would cut down on many viruses as well. Even if you somehow infected a program, you couldn't get more access than it already has.

about 7 months ago
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US Federal Judge Rules Suspicionless Border Searches of Laptops Constitutional

Chris Katko Re:TrueCrypt (462 comments)

If that were a common problem, then it wouldn't be impossible to take measures to prevent it.

You want data you can't access if you're compromised? Don't give yourself access to it. Restrict it by time (like a time delay vault at Walgreens), or even by giving the data to someone else ala Snowden where it didn't matter if he got caught--the data was in good hands.

Safe House (1998) the movie, was an interesting example staring Sir Patrick Stewart himself. He had to enter a password every day to keep from a remote mail server leaking tons of information. Bugging a single modem line aside (it's a movie, after all.) The interesting part was that the password wasn't text. It was graphical, and required some mental agility to compute. So when he brain starts failing, as would yours under duress, he wouldn't be able to enter the password even if he wanted.

about 6 months ago
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US Federal Judge Rules Suspicionless Border Searches of Laptops Constitutional

Chris Katko Re:TrueCrypt (462 comments)

Why not just separate the HDD from the laptop? Putting together equipment is certainly more invasive than merely turning it on. They're also assuming they go together.

about 6 months ago
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Surge In Litecoin Mining Leads To Graphics Card Shortage

Chris Katko Re:It hurt AMD today... (213 comments)

All that money... just so you can play the same videogames at twice the resolution as everyone else...

about 8 months ago
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Mathematical Model of Zombie Epidemics Reveals Two Types of Living-Dead Strains

Chris Katko Not exactly written by an expert (163 comments)

>They then plug these figures into the model and iterate to find the set of parameters that best fit the data, a process known as Markov Chain Monte Carlo simulation. In total they run the simulations over up to 500,000 iterations.

The author makes Monte Carlo seem like a solver. It's not. You don't use Markov Chain Monte Carlo to model data. You use it to optimize finding solutions by reducing the number of samples required, which allows more complex models with less expensive hardware. You still need the rest of the picture to solve for the data.

That's like saying catalysts cause chemical reactions. No, they don't cause them, they help them go faster.

about 8 months ago
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Monthly net electricity use in my household:

Chris Katko Re:Tesla (327 comments)

Go solar. Go off the grid. Cool. But, >Destroying this planet a bit less feels great too; who knows, my kids might want to live there... I hate that mentality, though. There's no correlation, let alone causation, to believe that a couple people running solar and reducing carbon by fractions of a percentage globally are going to improve anyone's life. The real solution involves real work by using policy change and forcing industry to follow.

about 8 months ago
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Alfred Poor Says HDTV Manufacturers are Hurting (Video)

Chris Katko Re:pointless (307 comments)

>How in the world can anyone make out individual pixels at 1080p on a reasonable screen size without getting right up to the screen?

And how is that different from 1080p cellphones and tablets?

about 9 months ago
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Alfred Poor Says HDTV Manufacturers are Hurting (Video)

Chris Katko Re:pointless (307 comments)

Netflix is already testing streaming 4K test videos. 4K cameras are already widely used in the industry, and 6K cameras are being produced this year. You can also run any modern 3-D video game at 4K.

It's chicken and the egg. Someone has to take the first step, and the video industry and TV industry have already volunteered.

So,
1 - Content is already being produced
2 - Televisions are being produced
3 - Content delivery companies are testing deployments.

What more could you possibly ask for? There is more support for 4K than there is for the Oculus Rift, and everyone is acting like the Oculus Rift is the second coming of Jesus.

about 9 months ago
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Microsoft To Can Skype API; Third-Party Products Will Not Work

Chris Katko Re:And nothing of value was lost... (330 comments)

No one uses Skype? Just like no one uses televisions. Yeah, I hate it. But it's the only thing everyone has.

about 9 months ago
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Apple Blocks Lawrence Lessig's Comment On iOS 7 Wi-Fi Glitch

Chris Katko Re:Apple forums are a wholesome place (326 comments)

I was going to write a cheerful praise of Apple on their forums... but I just upgraded and it was greyed out.

about 9 months ago
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AMD's Radeon R9 290X Review

Chris Katko Re:AMD - Can't help but be a fan.. (212 comments)

They're behind because the latest generation of desktop CPU's failed to perform any better than the previous.

about 9 months ago
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Google X Display Boss: Smartphones, Tablets, Apps Are "Mind-Numbing"

Chris Katko Re:Overlooking an obvious fact (157 comments)

Do you ever get tired of masturbating to the idea that the government cares who you are?

Cars already log information for crash recovery. And that phone you use is ALREADY A TRACKING DEVICE. But if we put those two together to get automatic car's driving us 13 hours across country while we take naps... THAT'S where you draw the line?

Unless you don't travel (or leave the house?), in which case, I can see why you would be angry with such an amazingly useful invention. But for the rest of us, privacy is a completely separate issue from the idea of computer-driven cars, and both should be worked on.

about 10 months ago

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