Misinformation is a widespread and serious concern within our society today. Nearly every issue we face involves claims of misinformation, as well as disinformation and otherwise misleading content. But despite being frequently framed as an existential threat, misinformation remains hard to define and measure. This event will discuss what misinformation is, whether the concern around misinformation is legitimate or reflects a panic over new expressive technologies, and what technology companies and policymakers can do to help develop knowledge, protect expression, and make progress as a society.