Dr. Nick Henderson: We've all had days like that, haven't we? You make one small mistake and because of that you make a bigger one. You leave your wallet by the bed and you go up to get it, you trip over the rug, you break your leg. Next thing you know, you're in hospital with a fatal infection. Just because you forgot your wallet.
Grace: Talking about yourself?
Dr. Nick Henderson: No. Talking about weather systems.