"Out from the November night an easy orange glow invited me into the Sheldonian. I trotted up creaking stairs to the top floor, into the jaws of death – the jaws of death being an archaically unintuitive seating set up. The seats on the upper stalls are just three big steps – if you arrive late, sidling along the upper rows in front of those already seated requires deft footwork and a lot of 'excuse me's."