Eric Liu: I want to jump into what specifically the problem with email is, which is huge. The villain in my book is actually what I call the hyperactive hive mind workflow. And this is an approach to collaboration where you just figure things out on the fly With back and forth unscheduled ad hoc messaging. We're going to get to all of that. But first, I want to start to paint this picture, just simply put, why do we need a world without it? It's not an email is not a problem. Isn't it more like a communication problem? He says he doesn't really care about the tool but rather how work is being coordinated.