Rational Ignorance

Of course, it is a cliché of our times that we suffer from information overload because of the ubiquity of electronic media. And for fifty years, cognitive scientists have been harping on the limitations of the brain in processing information. Some have argued that Grice’s cooperative maxims are a way to manage the flow of information in a conversation, maximizing the rate of transmission of usable knowledge. But the ultimate reason our speech is so indirect may lie in a different danger ...

 Summary of "Sirius"

Fifty years ago, the philosopher Olaf Stapledon published a novel, Sirius, which explores some of the depths of loneliness and alienation to which genetic engineering might lead. Stapledon knew nothing of DNA and molecular biology, but he foresaw the possibility of genetic engineering and saw that it would give rise to severe dilemmas. His hero, Sirius, is a dog endowed with a brain of human capacity by doses of nerve-growth hormone given to him in utero. His creator raised him as a member of...

 Automation and Early Computation, Social Inequaltiy

Haldane did not foresee the computer, the most potent agent of social change during the last fifty years. He expected his Daedalus, destroyer of gods and of men, to be a biologist. Instead, the Daedalus of this century turned out to be John von Neumann, the mathematician who consciously pushed mankind into the era of computers. Von Neumann knew well what he was doing. Soon after the end of the second world war, he started the Princeton computer project. Like Haldane's Daedalus, he had dreams ...

 Loss of Hope Accelerates the Death of Trantor

"The fall of Trantor," said Seldon, "cannot be stopped by any conceivable effort. It can be hastened easily, however. The tale of my interrupted trial will spread through the Galaxy. Frustration of my plans to lighten the disaster will convince people that the future holds no promise to them. Already they recall the lives of their grandfathers with envy. They will see that political revolutions and trade stagnations will increase. The feeling will pervade the Galaxy that onl...

 Three Types of Artificial Intelligence

Lighthill begins by dividing artificial intelligence into three areas which he calls A, B, and C. A stands for advanced automation, the objective being to replace human beings by machines for specific purposes, for example, industrial assembly, military reconnaissance or scientific analysis. A large body of work in category A is concerned with pattern recognition, with the programming of computers to read documents or to recognize spoken words. C stands for computer-based central-nervous-syst...

 Computer Metaphors for Biochemistry

The metaphor of the computer represents in some crude fashion the chemistry of life. Nowadays one may assume that the average citizen of an industrialized country is at least as familiar with computers as with rain forests. The idea of using the computer as a metaphor is a natural one. A computer is a device for handling information according to a program which it is able to remember and execute. A living cell, to remain in control of its vital functions in a variable environment, must also p...

 Science Communication: Definitions VS Metaphors

A hundred years ago, Charles Darwin could write books discussing the central problems of biology in language which was scientifically precise and still accessible to the general public. In those days the subject matter of biology was plants and animals. The language of Darwin was intelligible to experts and non-experts alike. One did not need a degree in {55} botany to understand the difference between a fern and a flower. Darwin could assume that his readers were familiar with the world of...

 Nemisis

Piet Hut, another Dutch astronomer fifty years younger than Jan Oort, decided to take seriously the possibility that comet showers are periodic. If they are periodic, the theory that they are caused by the random passing-by of alien stars cannot be right. If showers are periodic, they must be explained by a different theory. Piet Hut and his friend Rich Muller found an alternative theory to explain the periodicity in case it turns out to be real. The alternative theory is called Nemesis. Neme...

 Becoming a "Be-er" of Other People

For a while, one’s speaking is largely “fake” — that is, one is thinking in one’s native language but substituting words quickly enough to give the impression that the thinking is going on in the second language; however, as one’s experience with the second language grows, new grammatical habits form and turn slowly into reflexes, as do thousands of lexical items, and the second language becomes more and more rooted, more and more genuine. One gradually becomes a fluent thinker in...

 A Small Contribution to a Large Project

That evening, at a café near the work site, I had a drink with an iter physicist, who was despondent, fearing that the machine would never work. Why he was staying with the project he couldn’t say. But a few weeks later, after thinking about it, he told me that his mood had lifted. He had come to see his role in both small and sublime terms—akin to a stonemason toiling for years on the York Minster cathedral (begun 1220, finished 1472) without witnessing the work being completed. “I no...