the power of knowing what you don't know Think again：the power of knowing what you don't know the power of knowing when to walk away I know what you don't know 并列题名：I know what you don't know the power of noticing what was always there I know what you don't know. Teaching what you don't know 逆思维：华顿商学院最具影响力的教授，突破人生盲点的全局思考：the power of knowing what you don't know 50 laws of power that you never know