Alexa, Cortana, Einstein, Google, Siri, and Watson are fast becoming members of the family to us. They don’t exactly live and breathe, but they can still be quite chatty at times. We mostly control our computers and phones by pointing, clicking, swiping, poking and typing. But these interfaces are moving aside. Instead, we are interacting more and more with our machines the same way we interact with each other: by talking.