This is a story which is close to my heart. Not because of the tech, or the AI interactiveness of it all, but because of the line that we're about to cross, if not crossed already.
Simply put, Star-Trek showed us a computer that we interacted with for more than just text input and output, but for full speech interactions, and learning.
The only problem with this article, is the repetitive reference to Google Now, when in actual fact, Google Assistant is the new standard that we're looking at here and Google Home embodies this and takes the next step.
The drastic jump in the Android assistant's capabilities has come from neural net training and deep learning techniques that have allowed scientists to boost speech-recognition technology to a point where it is now starting to learn the nuances of human behavior through the medium of voice.