It starts in a cloud of steam and flashing lights. "Replicants are like any other machine. They're either a benefit or a hazard,"a voice-over intones. "If they're a benefit, it's not my problem." ...

When Elon Musk unveiled Tesla’s long-awaited robotaxi at a movie studio this month, he presented an image of a person standing in an orange desert looking toward demolished buildings — similar to an ...