When I interview people, and they give me an immediate answer, they're often not thinking. So I'm silent. I wait. Because they think they have to keep answering. And it's the second train of thought that's the better answer.
Age appears to be best in four things; old wood best to burn, old wine to drink, old friends to trust, and old authors to read.
We know specific genes are turned on in specific cells, but we don't know to what extent this happens.