Siri's creators say they've made something better to do everything for you

The engineers erupted in cheers as the pizzas arrived. They had ordered pizza, from start to finish, without placing a single phone call and without doing a Google search -- without any typing at all, actually. Moreover, they did it without downloading an app from Domino's or Grubhub. Of course, a pizza is just a pizza. But for Silicon Valley, a seemingly small change in consumer behaviour or design can mean a tectonic shift in the commercial order, with ripple effects across an entire economy.