Why Amazon paid $1.7 billion for a Roomba

- How a robot born as a $10,000 prototype found its way into the middle of a $1.7 billion deal
The first robot that many human beings welcomed into their homes was a peculiar creature born 20 years ago with a funny name. It didn’t look the way we imagined robots, and it didn’t perform the tasks we envisioned outsourcing to robots. We pictured self-driving cars. We got a self-driving vacuum cleaner.