Does this "for" mean "because"? I have never encountered this composition, "for" usually comes after a comma in a sentence to mean "because".
ex)..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.
It's because- it doesn't have to come after a comma.