JOHN TERNUS, named by Apple on April 20th as its new chief executive, is known to share many of the defining characteristics of Tim Cook, the man he is replacing: likeable, unflappable, a company man to the core. But in the midst of what could be one of the biggest technological upheavals in history, that may not be enough. The question is, can he also invoke the mercurial magic of Mr Cook’s even more illustrious forebear, Steve Jobs?
