Robert Engle and Clive Granger won the Nobel Prize for their work on ARCH and something-or-the-other-I-ought-to-have-studied-at-B-school. I was outside Engle’s office last month (somewhere within 100m of the corridor in the photo), and that’s the closest I’ve been to an Nobel laureate. Of course, some people know him personally and discuss ‘stupid problems’ with him.