How Christopher Wren built his reputation
The changing face of Silicon Valley
An interview with Zineb Sedira
The tiger who smoked a pipe
Plus: the uncertain market for Old Masters, the Cambridge colleges that have turned to wood, the artists who have taken young women seriously, and reviews of Guido Reni, Edward Hopper and the new museum at the Bibliothèque nationale
What happens when an artist wants to be anonymous?
An Austrian museum is hosting a show by an unnamed artist – but perhaps this act of secrecy will help us see the work more clearly