Edinburgh

Even on a dull evening, the centre of Edinburgh is a great place to wander. I'm here to watch "Becoming Led Zeppelin", having travelled in with daughter L, who is returning to London. The aim had been to go in by bus, but she arrived upstairs ten minutes before we were due to leave, wanting to print four pages of drama script. By the time she accepted that her phone didn't connect to the printer, she'd emailed the document to me, and I'd printed it, we were just too late, so I drove until we could get a bus.

Earlier, I'd started analysing our solvers to get consistency of advice for users, actually preparing a typeset document to make the process easier.