In early 2018 the city of San Jose — deep in California’s Santa Clara Valley — hosted two events a week apart that together signalled the most significant shift in a behaviour for over a decade.
Beginning his 15 minute talk at the the 2010 TEDGlobal conference in Oxford, England, author and journalist Matt Ridley compared side-by-side an Acheulean hand axe from half a million years ago, and a modern computer mouse.