Daniel Buren’s wall at Tottenham Court Road does most of the work for you. It’s fifty feet of saturated circles and diamonds, all bouncing off those merciless black-and-white stripes. I just had to wait. Two strangers soon obliged: he slumped against a blue diamond mid-text, and she tucked into a green circle taking what looked…

A man on a bench at Coventry station, fully absorbed in his newspaper while everyone else strides past with suitcases and rucksacks, making for the platform. He’s wearing a shirt, shorts, and a shoulder bagwhose strap cuts across his chest. A huge Paul Hollywood stares down from an advert for the “only baking book you’ll…