“My friends call me Johnny…” At home with Jean Pigozzi — tech investor, art collector, and the world’s best connected man

Jean Pigozzi has two swimming pools: one for ideas, and the other for friends. The first is long and thin and lined with black stone, and at the end of it there’s a little yellow exercise book, encased in rubber and bound to a special pen, which is engineered to make notes in aquatic conditions. (Pigozzi does his best thinking mid-dunk, he says — but he’s got a copy in the shower too, just in case).