Nevertheless, can we really predict the value of a research in this way? Unfortunately,it is hardly possible. Only if we could foresee things centuries after, could we correctly judge the potential number of people who will be benefited. Take the history of science development for example, when Rontgen accidentally discovered the X-ray, he and other people might only treat the new invention as something interesting and funny,since the new variety of light can go through different obstacles. Years later, however,people finally find X-rays crucial role in the field of physic for it can help doctors to understand our diseases. Today, every one of us is clear about the profits X-ray has brought, but when the discovery was at its inchoate days or even before the discovery was made, could we probably predict its usage in our hospitals? If Rontgen set his research priority in the way discussed above, it is likely that the discovery of X-ray will date to a rather late period, or even today we would not know about a light which can penetrate into our bodies. Thus, the problem of deciding our schedule is more difficult than we have thought of.
To measure the importance of a research, we must also take into consideration the possible troubles that the research and the results may cause. The research of cloning,one of the frontier subjects nowadays, is so controversial that the scientists alone cannot decide whether or not they should continue their work. Hesitations are made upon cloning research, as the results might mean catastrophe to the whole human race. Before we carefully consider from every perspectives, both technological and social, any further research on cloning will probably raise endless disputes and polemics. Before carrying on certain research, scientists and not only scientists should evaluate the possible benefits and possible damages caused by the results.
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