Leach's analysis of the biblical text Genesis, as is the case certainly with Levi-Strauss' understanding of the Oedipus myth, from two and not from one--if structuralism is a critique of genesis, what happens when you have to make a distinction between two entities in your system, the poetic function and the metalingual function, in terms of their genesis: that is to say, in terms of the intention that stands behind them? 