For years, even before 9/11, I've been trying to warn that the threat from amateur biolabs will ultimately turn out to be far more troublesome than leakage from military labs - perhaps even more costly and deadly than nuclear terrorism. ↗
He made it quite clear that if I didn't play the role, I would be dead within a week. As you can imagine, the guy who turned down Hagrid would be like the guy who called the Beatles a guitar band. So I couldn't possibly refuse, really. ↗