Word: models
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Dates: during 2000-2000
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...Elke '00, who was a study group liaison for Pryor's "Everything You Wanted To Know About Politics But Were Afraid To Ask" at the IOP last spring, said he can think of "no better model" for aspiring public servants...
When at last we have a simple, compelling, mathematically consistent theory of gravitation and other forces that explains all the apparently arbitrary features of the standard model, it will be a good bet that this theory really is final. Our description of nature has become increasingly simple. More and more is being explained by fewer and fewer fundamental principles. But simplicity can't increase without limit. It seems likely that the next major theory that we settle on will be so simple that no further simplification would be possible...
...cure cancer or understand consciousness, however. We probably already know all the fundamental physics we need for these tasks. The branch of science in which a final theory is likely to have its greatest impact is cosmology. We have pretty good confidence in the ability of the standard model to trace the present expansion of the universe back to about a billionth of a second after its start...
...when we try to understand what happened earlier than that, we run into the limitations of the model, especially its silence on the behavior of gravitation at very short distances. The final theory will let us answer the deepest questions of cosmology: Was there a beginning to the present expansion of the universe? What determined the conditions at the beginning? And is what we call our universe, the expanding cloud of matter and radiation extending billions of light-years in all directions, really all there is, or is it only one part of a much larger universe in which...
...runners--hit a wall. "It's conceivable the record could be 3 min. 30 sec. in 50 years," says American Olympic miler Steve Holman. "But bringing it down much more is a long way off." Scientists agree. In 1987 researchers at Canada's McGill University developed a mathematical model that predicted a world mile record of precisely...