Null Move

Called the "null move" technique, it tells the engine to "pass" for one side. That is, to evaluate a position as if one player could make two moves in a row. If the position has not improved even after moving twice, then it can be assumed that the first move is a dud and can be quickly discarded from the search tree, reducing its size and making the search more efficient. Null moves were used in some of the earliest chess programs, including the Soviet Kaissa. It's elegant and a little ironic...

 Processing Power to Chess Rating Ratio

50 here is what the Deep Thought team wrote about the relationship between search depth and chess strength in a 1989 article: The ascent of the brute-force chess machines back in the late 1970s made one thing crystal clear: there is a strong causal relationship between the search speed of a chess machine and its playing strength. In fact, it appeared from machine self-test games that every time a machine searches one extra ply, its rating increases by about 200-250 rating points. Since each...

 Computers are All Tactics and No Strategy

Chess computers don't have psychological faults, but they do have very distinct strengths and weaknesses, far more distinct than any equivalently strong human player would have. Today, they are so strong that most of their vulnerabilities have been steamrolled into irrelevancy by the sheer speed and depth of brute force search. They cannot play strategically, but they are too accurate tactically for a human to exploit those subtle weaknesses decisively. A tennis player with a 250-m.p.h. serve...

 Break the Rules of a Game to Improve it

In The Well-Played Game, Bernard DeKoven advocates a fundamental adjustment in players' attitudes towards the rules of a game: You're not changing the game for the sake of changing it. You're changing it for the sake of finding a game that works. Once this freedom is established, once we have established why we want to change a game and how we go about it, a remarkable thing happens to us: We become the authorities. No matter what game we create, no matter how well we are able to play it,...

 Computer Models as Play

There is, indeed, an "art" to worldplay in the social sciences that fuses narrative with analytical technique. There is also a kinship with the arts in the relationship between imagined world and reality, a point brought home by political scientist and ellow Robert Axelrod. In the early 1960s the teenage Axelrod won the Westinghouse kience Talent Search for a very simple computer simulation of hypothetical lifeforms behaving in an artificial environment. Ever since, he has worked on the appli...

 Why Do We Like Certain Tunes or Understand Certain Senten...

Contrast two answers to the question, Why do we like certain tunes? Because they have certain structural features.Because they resemble other tunes we like.   The first answer has to do with the laws and rules that make tunes pleasant. In language, we know some laws for sentences; that is, we know the forms sentences must have to be syntactically acceptable, if not the things they must have to make them sensible or even pleasant to the ear. As to melody, it seems that we only know som...

 Altruism is a Basic Human Instinct

The cost for my survival must have been hundreds of millions of dollars. All to save one dorky botanist. Why bother? Well, okay. I know the answer to that. Part of it might be what I represent: progress, science, and the interplanetary future we’ve dreamed of for centuries. But really, they did it because every human being has a basic instinct to help each other out. It might not seem that way sometimes, but it’s true. If a hiker gets lost in the mountains, people will coordinate a sear...

 How Do You Find Emergent Intelligence on the Internet?

How would we know if there was an autonomous conscious superorganism? We would need a Turing Test for a global AI. But the Turing Test is flawed for this search because it is meant to detect human-like intelligence, and if a consciousness emerged at the scale of a global megacomputer, its intelligence would unlikely to be anything human-like. We might need to turn to SETI, the search for extraterrestrial intelligence (ETI), for guidance. By definition, it is a test for non-human intelligence...

 Summary of Postmodernism

The teaching that there is no objective reality, but rather many subjec¬ tive realities, or in this case, that the subjective realities are on an equal par with the objective reality (you're dead!) in turn influences students' views of the primacy of knowledge. To critics, history is no longer the search for what really happened, but rather the victor's interpretation as seen through the lens of power and oppression, and it bears a cultural and political focus. Literature is no longer a stud...

 Each Scientists Adds Their Own to What Came Before

The advancement of science is slow; it is effected only by virtue of hard work and perseverance. And when a result is attained, should we not in recognition connect it with the efforts of those who have preceded us, who have struggled and suffered in advance? Is it not truly a duty to recall the difficulties which they vanquished, the thoughts which guided them; and how men of different nations, ideas, positions, and characters, moved solely by the love of science, have bequeathed to us the u...