Around 1967 Dan Bobrow wrote a program to do algebra problems based on symbols rather than numbers.

This is a tricky domain because, unlike simple arithmetic, to solve a calculus problem - and in particular to perform integration - you have to be smart about which integration technique should be used: integration by partial fractions, integration by parts, and so on.

If you just have a single problem to solve, then fine, go ahead and use a neural network. But if you want to do science and understand how to choose architectures, or how to go to a new problem, you have to understand what different architectures can and cannot do.

There was a failure to recognize the deep problems in AI; for instance, those captured in Blocks World. The people building physical robots learned nothing.

There are three basic approaches to AI: Case-based, rule-based, and connectionist reasoning.

We wanted to solve robot problems and needed some vision, action, reasoning, planning, and so forth. We even used some structural learning, such as was being explored by Patrick Winston.

Once when I was standing at the base, they started rotating the set and a big, heavy wrench fell down from the 12 o'clock position of the set, and got buried in the ground a few feet from me. I could have been killed!

In general we are least aware of what our minds do best.

I heard that the same thing occurred in a scene in Alien, where the creature pops out of the chest of a crewman. The other actors didn't know what was to happen; the director wanted to get true surprise.

By the way, it was his simulations that helped out in Jurassic Park - without them, there would have been only a few dinosaurs. Based on his techniques, Industrial Light and Magic could make whole herds of dinosaurs race across the screen.

The basic idea in case-based, or CBR, is that the program has stored problems and solutions. Then, when a new problem comes up, the program tries to find a similar problem in its database by finding analogous aspects between the problems.

No computer has ever been designed that is ever aware of what it's doing; but most of the time, we aren't either.

When David Marr at MIT moved into computer vision, he generated a lot of excitement, but he hit up against the problem of knowledge representation; he had no good representations for knowledge in his vision systems.

You don't understand anything until you learn it more than one way.

I think Lenat is headed in the right direction, but someone needs to include a knowledge base about learning.

Around 1967 Dan Bobrow wrote a program to do algebra problems based on symbols rather than numbers.

Societies need rules that make no sense for individuals. For example, it makes no difference whether a single car drives on the left or on the right. But it makes all the difference when there are many cars!

Kubrick's vision seemed to be that humans are doomed, whereas Clarke's is that humans are moving on to a better stage of evolution.

Stanley Kubrick knew we had good graphics around MIT and came to my lab to find out how to do it. We had some really good stuff. I was very impressed with Kubrick; he knew all the graphics work I had ever heard of, and probably more.

I believed in realism, as summarized by John McCarthy's comment to the effect that if we worked really hard, we'd have an intelligent system in from four to four hundred years.

Artificial intelligence is the science of making machines do things that would require intelligence if done by men.

I said, 'Okay, it's the year 2000, I'm getting a computer and a Palm Pilot.' I know how to check my e-mail, and I've listed some phone numbers on it. Half the time the battery has gone out so I can't use it.

It's a tough thing to know that when you're making your album, you're going to end up collaborating with, say, Wal-Mart, on your artwork. That just sucks. And the pressure behind getting the numbers real fast is, to me, dizzying.

I'm writing a book. I've got the page numbers done.

I mean it's the most objective industry in the world. If your numbers stink, you're out. If your numbers are good, you get more money. It's the most Darwinian, it's beautiful, it's brutal, it works.

You know too well the forces which compose their army to dread their superior numbers.

He's a world-famous name to people who care about his music, but there are many people who have never heard of George Gershwin and those numbers increase.

But that is the only thing that slows me down is the system. No one, two or three was big enough to slow me down, only the system. It was the system that slowed me down to make my numbers fall. Not because I am older.

I think my numbers speak for themselves.

Baseball people, and that includes myself, are slow to change and accept new ideas. I remember that it took years to persuade them to put numbers on uniforms.

For a London play, rehearsal time would be four weeks for the entire show. In films, I'd spend six weeks on the big dance numbers to get them perfect before the actual shooting.

We typically hear numbers that there are 34 million households that are in stocks in some form. Well, I say that what's occurred is if you have a job in this country, you're in stocks.

Both free speech rights and property rights belong legally to individuals, but their real function is social, to benefit vast numbers of people who do not themselves exercise these rights.

We have seen Indians in immense numbers, and all those on this coast of the Pacific contrive to make a good subsistence on various seeds, and by fishing.

Now, I feel that if somebody looks through all the numbers through all those years, they will find one for Julius Rosenberg, and it is worth finding if it is such an important issue.

I differ materially from Capt. Lewis, in my account of the numbers, manners, and morals of the Sioux.

What matters to me is that I do what I think is right and I see, I'm a numbers guy, that's my attitude. I know we have a debt tsunami coming, we are bankrupting this country and I'm in a position where I can actually advance ideas to prevent that from happening. That's exactly what I should be doing.

When we first went there we completely lacked confidence. Our manager told us our act was too long, and told us to drop certain numbers and concentrate on the exciting stuff. And he was right.

We can't afford as a nation - not because of money but because of our social fabric - to have large numbers of people who are not working.

President Bush says he is concerned about the Iraqi people, but if Iraqi people are dying in numbers, then American policy will be challenged very strongly.

France is the only nation in which astoundingly small numbers of civilized patrons reside.

They were saying computers deal with numbers. This was absolutely nonsense. Computers deal with arbitrary information of any kind.

The numbers may be said to rule the whole world of quantity, and the four rules of arithmetic may be regarded as the complete equipment of the mathematician.

The success of any great moral enterprise does not depend upon numbers.

The war is dreadful. It is the business of the artist to follow it home to the heart of the individual fighters - not to talk in armies and nations and numbers - but to track it home.

What is the use of physicians like myself trying to help parents to bring up children healthy and happy, to have them killed in such numbers for a cause that is ignoble?

Linux evolved in a completely different way. From nearly the beginning, it was rather casually hacked on by huge numbers of volunteers coordinating only through the Internet.

I tried marriage. I'm 0 for 3 with the marriage thing. So, being a ballplayer - I believe in numbers. I'm not going 0 for 4. I'm not wearing a golden sombrero.

When large numbers of men are unable to find work, unemployment results.