This is a really practical as well as philosophical conversation with newly-retired international baccalaureate teacher, Steve Kern. He talks about his class in Theory of Knowledge, curiosity, and life-long learning. He addresses profound questions like, “How do I know what I know?” “How do I know if what I’m reading or hearing is credible or not?” “What is fake news?” “How do I know when I have enough evidence to make good decisions?”