I'd like to tell you this is moonlight

But, of course, it isn't. Snapped on the bridge over the Water of Leith at v.v.v. early sparrows, when I got back from dropping my son off at the airport, where he'd gone to get a flight to work in London. These young people. Commuting by air nowadays. It'll be an executive jet next.

It's the only time I've been out today. The rest of the day was spent under the laptop, working slowly but reasonably steadily on editing a conference paper for (hopefully) publication. We were going out this evening, but we've decided against. There is plenty to keep us amused here, not least a watch-a-thon of University Challenge for Alumni episodes which we've missed.