I often take long walks, here in London. Sometimes I have a destination – going to work at Imperial, or visiting a museum, or shopping for an obscure item. Othertimes I just wander. Either way, I sometimes ignore the temptation of Apple Maps, point my nose in the general direction, and zigzag through streets and parks until I get close to where I want to be. Along the way, I enjoy the sense of discovery, often about the smallest things.













