A few years ago, a Hollywood studio approached the tech giant IBM with an idea. Perhaps it would be fun if Watson – the company’s artificial intelligence system – analysed its new film about an artificial humanoid gone rogue, and created a trailer for it. The technology was duly “trained” on 100 horror trailers, fed the 90-minute film, and a human editor helped stitch its chosen clips together. The Guardian’s journalism is independent. We will earn a commission if you buy something through an affiliate link. Learn more. The result, billed as “the first movie trailer made by AI”, is...