The idea behind structuralism is that there are things we may not know but we can learn how they are related to each other. This has been used by science since it existed and can be extended to a few other studies — linguistics and mythology — but certainly not to everything.
The great speculative structures are made to be broken. There is not one of them that can hope to last more than a few decades, or at most a century or two.

As quoted in his obituary, Daily Telegraph (4 November 2009)

Claude Lévi-Strauss - Telegraph