Facebook's new teens-only app Lifestage turns bios into video profiles

 “What if I figured out a way to take Facebook from 2004 and bring it to 2016? What if every field in your profile was a full video” asks Facebook’s 19-year old product prodigy Michael Sayman. The answer is Lifestage, a standalone iOS app for people 21 and under Facebook is launching today. It asks for your happy face, sad face, likes, dislikes, best friend, the way you dance,…