To begin with, I would like to illustrate the necessity of devoting more researches on areas that are likely to benefit the greatest number of people. As we all know, there are some unresolved serious problems threatening people locally or all around the world. For example, we have no cure to AIDS, most cancers, malaria, and congenital heart disease (CDH). Thus the medical scientists should undertake the responsibility of removing these fatal diseases for people as early as they can. Or many people are suffering from lack of access to clean water and sufficient food, thus the agricultural researchers and researchers in other related fields should focus more on the technologies of cleaning dirty water and increasing the production of crops. Moreover, the government is suggested to assess the research topics and divide them into several classes with different priority of being funded according to the short-term significance. This is quite reasonable, because we have limited financial and other resources, thus researches that could bring welfare to the greatest number of people should get sufficiently funded; otherwise, the researches in these field would be deterred due to the lack of funds.
However, paying more attention to the areas that would influence the greatest number of people does not amount to abandoning the arguably "unimportant" or "useless" researches. In fact, the mere focus on some urgent areas and the ignorance of researches of no clear result are both detrimental, for the following several compelling reasons.
In the first place, there is no need calling for all the scientists and researchers to focus their research on areas that are likely to benefit the greatest number of people. Although it may accelerate the resolve of the hard problems, the solution is of low efficiency for the work of most scientists overlaps each other. Is there any significance for the government funds so many scientists to do the same work?
In the second place, there are long-term merits of those arguably "unimportant" or "useless" researches. For one thing, research itself is unpredictable to a large extent, especially the pioneering ones. Just as the master Albert Einstein once said, "If we knew what it was what we were doing, it would not be called research, would it?". Einstein itself devote all his life on the pioneering researches that did not bring immediate welfare to the world, but his theory of Relativity influenced the whole exploration of space and unclear energy exploit several years after it was created. Similarly, the physicist Richard Feynman, who devoted himself to the mathematical modeling of the subatomic particles, is also a good example to illustrate the great influence of a seemingly meaningless research. Although brought nothing to