When I visited Cambridge, last month, I was in town for just the afternoon and had very little time to see the city or explore the university. I’m back, this time for five nights, to attend a computer-science conference (MobiSys). I chose to arrive early and go for a hike: from Cambridge to Grantchester, and return, along the River Cam. (Get it? Cam-bridge?) Along the way, I encountered four swans a-swimming and dozens of punters a-punting, dined al fresco in an orchard famed for its literary heritage; and explored a church nearly 900 years old.
