Besides, sometimes government should also provide some policies, for instance, to promote cooperation between scientists from different nations to supply more opportunities for the development of scientific research.
UWere such policies established earlier between British and America last century, perhaps the double helix of DNA structure would be found much earlier.
Nevertheless, when it comes to researches in those controversial fields, indispensable restrictions and regulations should be placed on them. For instance U, clone, the newly developed scientific technology in the 20th century, has attracted so much attention by people all over the world as it allows people to manufacture any kind of organisms or even human beings in factories, but it is in fact a double-edged sward. On the one hand people will benefit a lot when clone is used in fields such as stock raising and gene therapy; while on the other hand, how can you imagine that what will happen if we clone a person like Hitler? And even if we clone a common individual, a variety of ethical problems will still occur. In light of this, as for those researches about the cloning of human organisms or human beings, some restrictions should be made by government and at least the researches of cloning human should be prohibited for the present time.U Also, the development of Unuclear weapons and biochemical weapons U that might lead to a severe threat to the security of all human beings over the world should be restricted by government.
In summary, under most circumstances government should not only involve little into the scientific research and development, but also provide necessary supports sometimes. However, in those aspects where many live issues still exist, certain restrictions and regulations should be placed on those scientific researches.
