1. I interview an archaeologist who tells me that I ask difficult -- but good -- questions. He illustrates his points with funny stories -- "The Iron Age did not begin with a man cantering round Britain with a trumpet saying 'Everyone start using iron now.' It was more of a gradual process." And "Well, I wouldn't go into a Glasgow pub and say 'Actually, you're not Celts.'"
2. A friend posts a picture of her new baby on Facebook.
3. The smell of spices and baking makes itself at home while the bread pudding is in the oven.