大學(xué)英語綜合教程第一冊(cè) Unit 3a

[00:00.00] Professor Hawking [00:02.19]thinks it important to keep everybody in touch with what science is about. [00:07.84]In this article he explains why. [00:11.08]PUBLIC ATTITUDES TOWARD SCIENCE by Stephen Hawking [00:16.30]Whether we like it or not, [00:18.83]the world we live in has hcanged a great deal in the last hundred years, [00:24.42]and it is likely to change even more in the next hundred. [00:29.05]Some people would like to stop these changes [00:32.68]and go back to what they see as a purer and simpler age. [00:38.45]But as history shows,the past was not that wonderful. [00:43.39]It was not so bad for a privileged minority, [00:47.93]though even they had to do without modern medicine, [00:51.75]and childbirth was highly risky for women. [00:55.59]But for the vast majority of the population, [00:59.06]life was nasty,brutish,and short. [01:03.32]Anyway,even if one wanted to,one couldn't put the clock back to an earlier age. [01:10.24]Knowledge and techniques can't just be forgotten. [01:14.68]Nor can one prevent further advances in the future. [01:19.54]Even if all government money for research were cut off [01:24.24](and the present government is doing its best), [01:28.22]the force of competition would still bring about advances in technology. [01:34.35]Moreover,one cannot stop inquiring minds from thinking about basic science, [01:41.09]whether or not they are paid for it. [01:44.36]The only way to prevent further developments [01:48.07]would be a global state that suppressed anything new, [01:52.72]and human intiative and inventiveness are such that even this wouldn't succeed [01:59.35]All it would do is slow down the rate of change. [02:03.56]If we accept that we cannot prevent science and technology from changing our world [02:10.19]we can at least try to ensure that the changes they make are in the right directions [02:17.53]In a democratic society, [02:20.09]this means that the public needs to have a basic understanding of science, [02:26.00]so that it can make informed decisions [02:30.05]and not leave them in the hands of experts. [02:33.99]At the moment,the public is in two minds about science. [02:39.63]It has come to expect the steady increase in the standard of living that [02:44.57]new developments in science and technology have brought to continue, [02:50.19]but it also distrusts science because it doesn't understand it. [02:55.49]This distrust is evident in the cartoon figure of the mad scientist working in his laboratory to produce a Frankensten [03:04.92]It is also an important element behind support for the Green parties. [03:11.14]But the public also has a great interest in science, [03:15.58]particularly astronomy,as is shown by the large audiences [03:21.14]for television series such as The Sky at Night and for science fiction. [03:27.49]What can be done to harness this interest [03:31.02]and give the public the scientific background [03:34.88]it needs to make informed decisions on subjects like acid rain, [03:41.10]the green house effect,nuclear weapons, [03:45.78]and genetic engineering?Clearly,the basis must lie in what is taught in schools [03:53.72]But in schools science is often presented in a dry and uninteresting manner. [04:00.25]Children learn it by rote to pass examinations, [04:04.98]and they don't see its relevance to the world around them. [04:09.08]Moreover,science is often taught in terms of equations. [04:15.03]Although equations are a brief and accurate way of describing mathematical ideas [04:21.56]they frighten most people. [04:24.20]When I wrote a popuar book recently, [04:27.23]I was advised that each equation I included would halve the sales. [04:33.01]I included one equation,Enstein's famous equation,E=mc2. [04:40.71]Maybe I would have sold twice as many copies without it. [04:44.81]Scientists and engineers tend to express their ideas [04:49.57]in the form of equations because they need to know [04:54.03]the precise values of quantities. [04:57.06]But for the rest of us,a qualitative grasp of scientific concepts is sufficient [05:03.60]and this can be conveyed by words and diagrams,without the use of equations [05:10.73]The science people learn in school can provide the basic frame-work. [05:16.34]But the rate of scientific progress [05:20.18]is now so rapid that there are always new developments that have occurred [05:26.11]since one was at school or university. [05:29.87]I never learned about molecular biology or transisitors at school, [05:35.12]but genetic engineering and computers [05:38.63]are two of the developments most likely to change the way we live in the future. [05:45.29]Popular books and magazine articles about science [05:49.91]can help to put across new development, [05:53.57]but even the most successful popular book [05:56.99]is read by only a small proportion of the population. [06:01.74]Only television can reach a truly mass audience. [06:06.05]There are some very good science programmes on TV, [06:10.42]but others present scientific wonders simply as magic, [06:14.96]without explaining them [06:17.18]or showing how they fit into the framework of scientific ideas. [06:22.54]Producers of television science programmes [06:26.01]should realize that they have a responsibility to educate the public, [06:31.76]no just ectertain it. [06:34.37]The world today is filled with dangers, [06:38.00]hence the sick joke that the reason we have not been contacted [06:42.99]by an alien civilization [06:46.20]is that civilizations tend to destroy themselves when they reach our stage. [06:51.95]But I have sufficient faith in the good sense of the public [06:56.31]to believe that we might prove this wrong. 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