The day anxiety really kicked in for me was Monday, March 9. I started to feel that my Korean colleague was right. It is a thing you sense, like an animal. Numbers and research are important, but they never convey the urgency that physical human bodies produce upon each other when they interact in uncertainty. When you try to stay casual while your interlocutor is just dead scared. When slips of tongue and gauche gestures trigger second thoughts or mild paranoia.