Minecraft is among the world’s most popular video games and has 100 million monthly active users.Credit: Mojang StudiosAn artificial intelligence (AI) system has for the first time figured out how to collect diamonds in the hugely popular video game Minecraft — a difficult task requiring multiple steps — without being shown how to play. Its creators say the system, called Dreamer, is a step towards machines that can generalize knowledge learn in one domain to new situations, a major goal of AI.“...