Ritical Theory To what extent could a structuralist theory of culture be conceived of as a science?

CRITICAL THEORY I: Essay Questions (2008-09).

All 1500 word essays must cover, in detail, two main theories or theorists from the module. Essays are expected to use at least two more secondary sources.

Analysing in detail R. Barthes Myth Today and C. Levi-Strauss Incest and Myth, To what extent could a structuralist theory of culture be conceived of as a science?
Apart from referencing the required essays, also reference at least two other related theories/books.

Harvard or Chicago style referencing, pref footnotes