The document discusses Thomas Piketty's work on wealth inequality and some limitations of his analysis. It notes that while Piketty correctly identified that wealth is huge, unequal, and self-perpetuating, capital does not fully explain income inequality trends. Returns on capital have complex effects, income at the top still largely comes from employment, and the UK labor share has remained high. The document was presented at an event in June 2017 on tackling 21st century inequality at home and abroad, featuring several panelists.