Already, some of the machine learning methods behind AlphaGo have been used to tackle significant problems, such as reducing energy use. Machine learning technology is also at work in a series of exciting medical research projects. And across many of Google’s products, machine learning has suddenly made the impossible real—from allowing people using Google Photos to find that photo of their dog in the snow almost instantly to improving the quality of Google Translate more in a single leap than the past 10 years of improvements combined.