science, of course, is a n indispensable source of information for the contemporary writer. it is, furthermore, a necessary part of his highly technological environment. thus it is also an inevitable component of his sensibility and a decisive, even if often unrecognized, component of his creative imagination. but science is not in itself an elemental well-spring of literature. even the most refined and precise research data are only raw materials which may or may not become literature. for whatever becomes a work of art of any kind does so as a result of an act of creation, an act of artistic composition, an act involving the art of make-believe. scientific statements or remarks as such, even when they are valid, reliable, and comprehensive, are not literature.
위 글 전체는 이해가 됩니다. 그런데 다섯번째 줄의 for의 기능이 뭐죠?