Please create an account to participate in the Slashdot moderation system

 



Forgot your password?
typodupeerror
×

Comment Re:No surprise there (Score 1) 263

If you only have two messages you can only get K^A K^B and A^B. This doesn't directly give you the key.
However as A^B is just a plaintext encoded plaintext, decyphering both plaintexts is relatively easy. Where relatively here means infinitely easier than provable impossibility.
Ridiculously easy if A and B were black and white images. See http://www.cryptosmith.com/archives/70
Getting the key is then trivial.

Comment Re:any questions? (Score 1) 360

Your job is finding a way to both comply with their requirements and getting quality software out. If after thinking it through with your coworkers there is no way you could get it done, your job is then to tell them they are full of shit and go get us new requirements. If unresponsive repeat and rinse with their superiors.

Comment Re:How about tri-ligual, quad-ligual ? (Score 2) 221

It may be more the fact that her parents were switching randomly, than the number itself. We can have many neuronal paths in parallel but they are organized by context. switch(p){case MOM: l = Japanese; break; case DAD: l = Korean; break; case TEACHER: l = English; break;} is more optimal than if p=(p==MOM)?(p->l==Japanese)?Japanese:Korean:(p==DAD)(p->l==Korean)?Korean:English;.....

Comment Re:He can't win (Score 1) 214

at least from when he started coding school systems to put him into classes with more girls

That is more "fucking awsome" than "bastard", even if today it would get his ass raped in some federal prison.
I'd say coding a BASIC interpreter in 4kb using paper and an emulator you hacked up for an unreleased platform is pretty cool as well.
Then he started hearing calls from the dark side and the rest is History.

All in all, I think he is an admirable man if only in the same category as Genghis Khan - who also did a lot genetic health related work for Eurasian people.

Comment Re:Bone Parts? (Score 4, Interesting) 99

The arms in theropods are like avian wings in that for most species they are in a rigid clapping position. There was a Slashdot article about this some time ago. Actually clapping doesn't quite describe it as you'll find ancient bird fossils have their claws facing forwards just like this one.
The "damaged" hip is actually one of the two main features used to tell a theropod away from other dinosaurs. The theropods ischium is facing backwards, while their illium faces forwards. This is the ancestral configuration, although it was secondarily lost in the species most closely related to birds, which have *both* facing backwards,
Plant-eating Ornithischia, like the Triceratops, on the other hand, evolved that "new" hip configuration much earlier.

Comment Re:Not that far-fetched (Score 1) 150

I am aware of hidden variables theories being dismissed by many. However, the probabilities can always be explained by hidden variables and vice versa. How could you tell a dead cat from an undead cat that died right after you looked at it?
My point was that we can't tell. I choose the explanation without pixie dust until it is definitely proven right or shown that the pixie dust behaves deterministically after all.
Newton's maths matched the world so closely until we realized they didn't. Nobody is discussing that QT is the best we have, but it can't even explain gravity, so it's safe to say it's at the very least incomplete.

Comment Re:Not that far-fetched (Score 1) 150

Heisenberg's Uncertainty Principle is being taken too far by pop interpretations and by some physicists.
It just means we may never be able to confirm any theory on the laws governing quanta and that we have to use probabilistic interpretations instead. It doesn't mean there aren't deterministic rules governing them.

Applying Occam's razor to the problem tells us Schroedinger's experiment doesn't yield an undead cat until you look at it any more than killing your cat based on the 31415926535'th bit of the output of random(3)* with seed 0 would. The cat will die or it won't, "alea jacta est", you just can't tell until you run the experiment.

* random(3) is a misnomer. It is a PRNG.
Classic Games (Games)

Pac-Man's Ghost Behavior Algorithms 194

An anonymous reader writes "This article has a very interesting description of the algorithms behind the ghosts in Pac-Man. I had no idea about most of this information, but that's probably because it's difficult to study the ghosts when I die every 30 seconds. Quoting: 'The ghosts are always in one of three possible modes: Chase, Scatter, or Frightened. The "normal" mode with the ghosts pursuing Pac-Man is Chase, and this is the one that they spend most of their time in. While in Chase mode, all of the ghosts use Pac-Man's position as a factor in selecting their target tile, though it is more significant to some ghosts than others. In Scatter mode, each ghost has a fixed target tile, each of which is located just outside a different corner of the maze. This causes the four ghosts to disperse to the corners whenever they are in this mode. Frightened mode is unique because the ghosts do not have a specific target tile while in this mode. Instead, they pseudorandomly decide which turns to make at every intersection.'"

Comment Re:Bullshit considered harmful (Score 2, Interesting) 222

To be fair, that doesn't counter his argument, amd64 has more registers than i386 and they do make a big difference. Repeat the tests with 32-bit pointers and 64 bit registers and then get back to us.

As of today, the method he mentions would probably provide a bit better performance, assuming the processor optimizations didn't break when their expectations weren't met.

However, I think it is very short-sighted to miss the fact that about the only thing increasing these days is memory and that apps tend to grab all the address space they can get. By 2050 I can see machines with 1TB ram, but I can't see apps keeping themselves under 0xFFFFFFFF.

Furthermore, thanks to ASLR, which is a feature available now on most OSes, address space fragmentation is a problem today even for programs well under the 4Gb mark. The future is 64:64. 32 bit architectures are already dead, they just haven't realized it yet.

Comment Re:Wasn't there a study... (Score 1) 151

If Neanderthals and Humans could interbreed I'd say we both were subspecies of our common ancestor. I can't see how can they be a subspecies of us when we didn't exist yet. So either rename homo rhodesiensis to homo sapiens, or hss and hn to homo rhodesiensis sapiens and homo rhodesiensis neanderthalensis respectively.

Comment Re:Normal (Score 1) 417

In any case, make it a cheap computer. I don't think the ipad would work for a toddler.

I used the "adult" version of the ZX Spectrum 48k when I was ~18 months old. I even learned enough SINCLAIR BASIC to LOAD "" :). However, the only program I ran was an invaders-like BASIC game and the keyboard membrane didn't survive my space spider smashing for long.

Slashdot Top Deals

Get hold of portable property. -- Charles Dickens, "Great Expectations"

Working...