People are using chatbots in all kinds of ways — to search the web, get help with an online purchase, sometimes even for counseling. But there's a lot about this human-AI interaction we don't fully understand. Do these chatbots effectively combat loneliness or worsen social isolation? The answer — so far — is complicated, according to Cathy Fang, a second-year PhD student at MIT Media Lab who, along with researchers from OpenAI, studied how chatbot use affects human social and emotional wellbeing.