Kwame Christian: We spend so much of our lives kind of frittering away time, right? You know, stuck in traffic, honking the horn, you know, banging our head. I'm always amazed like it in airports that there's an announcement that the flight is delayed by 20 minutes or something. People would quite happily fritter away that same 20 minutes if they were at home without this sort of idea that this 20 minutes is absolutely crucial," he says.