“One’s understanding of the truth – whether that’s the correctness of a fact or the guilt of a person – should never be unalterable. Think of a strongly held, defensible point of view as a block of ice, fixed and solid. When such views are well-founded, holding fast to them is commendable. But if new facts come to light – or new revelations materialize – then that block of ice should crack, melt, and even evaporate.”
