Morgoth and Doriath

[William Cloud Hicklin]

"Little he knew yet concerning Men, for engrossed with his own thought in the Music he had paid small heed to the Third Theme of Iluvatar". In any event Men have the power to shape their fate "beyond the Music of the Ainur". Taking these things together, how can Morgoth foresee what Hurin may or may not do?

Because Morgoth is hyperintelligent. Like the chessmaster- he doesn't have a crystal ball, but he can predict with accuracy how his opponent will react in various situations. Simply deduction, not prophecy.

And again- Tolkien never wrote that Hurin brough the Nauglamir to Menegroth. That was CT's invention. Whetehr Morgoth anticipated the specific manner or not, he knew that Hurin would infect Doriath with hate and malice. Hurin by the time he was released had become Morgoth's creature without knowing it- although he thought he was opposing him, doing evil from from evil motives redounds to the Devil's triumph.