For me the problem of induction is a problem about the world: a problem of how we, as we are now (by our present scientific lights), in a world we never made, should stand better than random, or coin-tossing chances changes of coming out right when we predict by inductions. . . .
It's language as a kind of structural system. A diagram of a sentence, now that seems like a kind of architectural model. I don't know how to explain it, but it would be nice to try. Why, why this fascination?