This book argues that in the digital era, a reinvention of democracy is urgently necessary. It discusses the mounting evidence showing that digitalisation is pushing classical parliamentary democracy to its limits, offering examples such as how living in a filter bubble and debating with political bots is profoundly changing democratic communication, making it more emotional, hysterical even, and less rational. It also explores how classical democracy involves long, slow thinking and decision processes, which don't fit to the ever-increasing speed of the digital world, and examines the technical developments some fear will lead to governance by algorithms.In the digitalised world, democracy no longer functions as it has in the past. This does not mean waving goodbye to democracy –  instead we need to reinvent it. How this could work is the central theme of this book.