A new book 'What Happened to Liberal Democracy?' by Nobel Laureate Daron Acemoglu examines the evolution of liberalism, and its future amid rapidly advancing technologies like AI. He joins Buisnessweek Daily to discuss why he wrote this book and how social media and online connections influence what democracy needs to thrive, arguing "if algorithms take the worst of what we say and amplify that, that's not freedom of speech, that's manipulation." He talks to Bloomberg's Carol Massar and Tim Stenovec.