Philosophers have been debating the question of free will for centuries. But it’s unlikely any have done so as entertainingly as in “The Adjustment Bureau.” David (Matt Damon) thinks he’s in control of his own destiny — at least all of it except the polls. The country’s youngest member of Congress is running for the U.S. Senate and seems assured of a victory. But the rising star is something of a hothead — sound familiar? — and some youthful indiscretions sink his campaign.