US scientist John Hopfield and British-Canadian researcher Geoffrey Hinton have won the Nobel Prize in Physics for creating the “building blocks of machine learning,” the Royal Swedish Academy of Sciences announced on Tuesday. Hopfield works at Princeton University and Hinton, who is known as the “godfather of artificial intelligence,” works at the University of Toronto. “This year’s two Nobel Laureates in Physics have used tools from physics to develop methods that are the foundation of today’s powerful machine learning,” the academy said in a press release. Ellen Moons, chair of the Nobel Co…