The humble keyboard is the unsung hero of our tech lives. It’s the thing that almost every great modern book or screenplay or even Instagram caption was first written on. And yet, very few people are writing about it. Designer and writer Marcin Wichary sought to change that with his new book “Shift Happens.” In it, he chronicles the sometimes contentious history of the keyboard. Marketplace’s Lily Jamali spoke to Wichary about his research, beginning with the very first typewriters.