Imagine someone holding forth on biology whose only knowledge of the subject is 'The Book of British Birds,' and you have a rough idea of what it feels like to read Richard Dawkins on theology.
Tact and diplomacy are fine in international relations, in politics, perhaps even in business; in science only one thing matters, and that is the facts.
I think that's something that people feel that I do really well; I don't mind it, because ultimately I think the characters I play move people, and who wouldn't want to move people?