When Kanishka Rao was a kid, robots like the droids from Star Wars and Rosie from The Jetsons got pretty far into his head. And now that he’s a principal software engineer at Google DeepMind, Rao is trying to get pretty far into theirs.Rao remembers those bots as “helpful around the house but also sassy.” Today, in an office surrounded by galumphing, fidgeting robots of all kinds, Rao and DeepMind are trying to at least make them helpful. Any chatbot can simulate sass; Rao’s aiming to build general-purpose intelligence that can inhabit many different robot bodies—in pursuit of what roboticists…