“You stole our idea” – the words echoed at a distance but caught his attention as he was busy drawing doodles on a note pad. He was physically there, but seemed pensive, elsewhere. His thoughts were back at his makeshift office at Harvard, where a tiny team working out of his dorm room in Kirkland House was busy writing endless pages of code. A code that set up a company worth tens of billions of dollars today – one that keeps us all hooked on to our phones – Facebook.