Excerpted from article:
"For decades, visions of the future have played with the magical possibilities of computers: they'll know where you are, what you want, and can access all the world's information with a simple voice prompt. That vision hasn't come to pass, yet, but features like Apple's Siri and Google Now offer a keyhole peek into a near future reality where your phone is more "Personal Assistant" than "Bar bet settler." The difference is that the former actually understands what you need while the latter is a blunt search instrument.
Via Giuseppe Mauriello, Herve Peitrequin