When it comes to learning a new language, duolingo CEO Luis von Ahn says the best practices comes from face-to-face, in-person conversation. And yet, he points out the reluctance many people have when it comes to these real-life interactions. "It turns out that like 90% of the world's population just does not want to speak with another person that is a stranger in a language that they're not comfortable with." But with AI, there's a way to change that, by way of talking to an animated character to circumvent the shyness behind talking to strangers. #FCFestival