Demis Hassabis on choosing what’s worth spending your life building in a world changing this fast: “Going after hard problems and deep problems, it’s no more difficult in some ways than going after a shallower, simpler, more superficial problem. They’re just differently difficult.” “Given life’s very short and you only have so much time and energy, you might as well put your life force into something that will really make a difference.” “If you start off on a deep tech journey today...…