How virtual assistants have evolved, and why Siri lags behind the others

5:52 PM ET Tue, 4 June 2019

At any given time, most of us are within earshot of a virtual assistant. Computer scientists have been working on some of their underlying technologies for more than half a century — so why can't Apple make Siri work better? Watch the video to find out where virtual assistants came from, where they go wrong, and what the future may hold for them.