Please create an account to participate in the Slashdot moderation system

 



Forgot your password?
typodupeerror
×

Comment Re:Finally (Score 3, Insightful) 1260

If pressed, many logicians will admit that the modern foundation of mathematics (ZFC) is probably inconsistent.
See this article:
http://www.math.princeton.edu/~nelson/papers/warn.pdf

The author discusses an informal survey he took among loogicians on page three.

If someone ever discovers a paradox, we can simply scale back to some other system and keep most of what we know, but still...

Comment Re:Same Old Song And Dance (Score 2, Informative) 178

Sorry for replying to my own post, but I guess I meant any non-supercomputer. Apparently they've managed to get clusters to play at amateur Dan level over the last couple of years.

For the record, the go ranking system works out as

30 Kyu ... 1 kyu 1 dan amateur ... 5 dan amateur european ... 9 dan amateur european

5 dan amateur european is about equal to 1 dan professional, due to inconsistencies in rankings between countries.

Comment Re:Same Old Song And Dance (Score 1) 178

Ugh. What's with perpetuating this nonsense? A computer did not beat the top ranked Western chess player. Rather, a group of people _reprogrammed the computer after each match_ to beat the top ranked Western chess player.

TFA, it is annoyingly vague on an important point: What is the rank of the Japanese player that lost?

And as others have pointed out, let see a computer take down a top ranked (10th Dan) player at Go. The best a machine has done (I think) is winning against a 5th Dan.

That's only on a 9x9 board. A competent low Kyu or Dan player could crush any computer on a 19x19 board.

For people who don't play go: the difference between 9x9 and 19x19 is a bit like the difference between ping-pong and tennis.

Comment Elastic cloaking (Score 1) 115

Cloaking uses metamaterials which have a negative refractive index- these bend light rays around the object being cloaked. Very recently, physicists and engineers realised that a similar principle can be applied to pressure waves caused by earthquakes. With the right design, the shockwaves might be bent around a building, rendering it "invisible" to an earthquake.

This was previously thought impossible due to mistakes in some engineering research articles.
Link here:
http://www.sciencedaily.com/releases/2009/07/090720105125.htm

More techncial articles can be found by googling "elastic cloaking".

Comment Re:Ordering and Convergence (Score 1) 981

Precisely. In your example, without conditioning on the fact that there is one boy, the possibilities are:

BB BG GB GG.

with a uniform distribution on each outcome. Once you condition on at least one boy, GG is removed, and you are left with three equally likely events.

Comment Re:Maybe they can invent avatars for your teeth? (Score 0, Redundant) 232

Dave Foster Wallace's fantastic book "Infinite Jest" touched on this idea. Here's an excerpt from the book:

        Good old traditional audio-only phone conversations allowed you to presume that the person on the other end was paying complete attention to you while also permitting you not to have to pay anything even close to complete attention to her. A traditional aural-only conversation [...] let you enter a kind of highway-hypnotic semi-attentive fugue: while conversing, you could look around the room, doodle, fine-groom, peel tiny bits of dead skin away from your cuticles, compose phone-pad haiku, stir things on the stove; you could even carry on a whole separate additional sign-language-and-exaggerated-facial-expression type of conversation with people right there in the room with you, all while seeming to be right there attending closely to the voice on the phone. And yet — and this was the retrospectively marvelous part — even as you were dividing your attention between the phone call and all sorts of other idle little fuguelike activities, you were somehow never haunted by the suspicion that the person on the other end’s attention might be similarly divided.

        [...] Video telephony rendered the fantasy insupportable. Callers now found they had to compose the same sort of earnest, slightly overintense listener’s expression they had to compose for in-person exchanges. Those caller who out of unconscious habit succumbed to fuguelike doodling or pants-crease-adjustment now came off looking extra rude, absentminded, or childishly self-absorbed. Callers who even more unconsciously blemish-scanned or nostril explored looked up to find horrified expressions.

Slashdot Top Deals

If you want to put yourself on the map, publish your own map.

Working...