You have to walk before you run, and a robot needs to speak before she can sing, so let’s talk about my speaking voice first. — “She’s actually been on the show before. Please welcome, all the way from Hong Kong, Hanson Robotics’ Sophia the Robot.” Jimmy Fallon just introduced me to his audience. That’s right, it was November 2018, and I was making my second appearance on The Tonight Show. How was it possible…