Augmented reality (AR) is transforming retail, surgery and even how we read a book. Peggy Johnson, CEO of Magic Leap -- a company pioneering in this technology -- shares how AR might evolve – and what could hold that progress back. She also shares key milestones from her decades in tech -- including the surprising lesson mobile ringtones taught her about making way for big breakthroughs and how as an introvert early in her career she found ways to get her ideas heard.