The BBC Radio 4 PM programme had an interesting idea. They asked anyone with a camera to take a picture of where they were at exactly 5pm today and post it to them. At that moment, I was crossing the river Cam at Grantchester (right opposite the house where Bertrand Russell lodged when he was writing Principia Mathematica with Whitehead), so I stopped and took this. Quality is poor — I only had a point-and-shoot camera on me. But still…

LATER… I went back to the image and tried a different crop, which seems to me to be much more satisfactory: